GroupProperty (Hazelcast Root 3.8.5 API)

java.lang.Object
- com.hazelcast.spi.properties.GroupProperty

```
public final class GroupProperty
extends Object
```
Defines the name and default value for Hazelcast properties.

Field Summary

Fields
Modifier and Type	Field and Description
`static HazelcastProperty`	`AGGREGATION_ACCUMULATION_PARALLEL_EVALUATION` Run aggregation accumulation for multiple entries in parallel.
`static HazelcastProperty`	`APPLICATION_VALIDATION_TOKEN` Use this property to verify that Hazelcast nodes only join the cluster when their 'application' level configuration is the same.
`static HazelcastProperty`	`BACKPRESSURE_BACKOFF_TIMEOUT_MILLIS` Control the maximum timeout in millis to wait for an invocation space to be available.
`static HazelcastProperty`	`BACKPRESSURE_ENABLED` Using back pressure, you can prevent an overload of pending asynchronous backups.
`static HazelcastProperty`	`BACKPRESSURE_MAX_CONCURRENT_INVOCATIONS_PER_PARTITION` The maximum number of concurrent invocations per partition.
`static HazelcastProperty`	`BACKPRESSURE_SYNCWINDOW` Controls the frequency of a BackupAwareOperation getting its async backups converted to a sync backups.
`static HazelcastProperty`	`CACHE_INVALIDATION_MESSAGE_BATCH_ENABLED` Defines cache invalidation event batch sending is enabled or not.
`static HazelcastProperty`	`CACHE_INVALIDATION_MESSAGE_BATCH_FREQUENCY_SECONDS` Defines the cache invalidation event batch sending frequency in seconds.
`static HazelcastProperty`	`CACHE_INVALIDATION_MESSAGE_BATCH_SIZE` Defines the maximum number of cache invalidation events to be drained and sent to the event listeners in a batch.
`static HazelcastProperty`	`CLIENT_ENDPOINT_REMOVE_DELAY_SECONDS` Client connection is removed or owner node of a client is removed from cluster ClientDisconnectedOperation runs and clean all resources of client(listeners are removed, locks/txn are released) With this property, client has a window to connect back and prevent cleaning up its resources.
`static HazelcastProperty`	`CLIENT_ENGINE_QUERY_THREAD_COUNT`
`static HazelcastProperty`	`CLIENT_ENGINE_THREAD_COUNT` The number of threads that the client engine has available for processing requests that are not partition specific.
`static HazelcastProperty`	`CLIENT_HEARTBEAT_TIMEOUT_SECONDS`
`static HazelcastProperty`	`CLUSTER_SHUTDOWN_TIMEOUT_SECONDS`
`static HazelcastProperty`	`COMPATIBILITY_3_6_CLIENT_ENABLED` When this property is true, if the server can not determine the connected client version, it shall assume that it is of 3.6.x version client.
`static HazelcastProperty`	`CONNECT_ALL_WAIT_SECONDS`
`static HazelcastProperty`	`CONNECTION_MONITOR_INTERVAL`
`static HazelcastProperty`	`CONNECTION_MONITOR_MAX_FAULTS`
`static HazelcastProperty`	`DISABLE_STALE_READ_ON_PARTITION_MIGRATION`
`static HazelcastProperty`	`DISCOVERY_SPI_ENABLED` Enables the Discovery SPI lookup over the old native implementations.
`static HazelcastProperty`	`DISCOVERY_SPI_PUBLIC_IP_ENABLED` Enables the Discovery Joiner to use public ips from DiscoveredNode.
`static HazelcastProperty`	`ENABLE_JMX`
`static HazelcastProperty`	`ENABLE_JMX_DETAILED`
`static HazelcastProperty`	`ENTERPRISE_LICENSE_KEY`
`static HazelcastProperty`	`EVENT_QUEUE_CAPACITY`
`static HazelcastProperty`	`EVENT_QUEUE_TIMEOUT_MILLIS`
`static HazelcastProperty`	`EVENT_SYNC_TIMEOUT_MILLIS` To prevent overload on the outbound connections, once and a while an event is made synchronous by wrapping it in a fake operation and waiting for a fake response.
`static HazelcastProperty`	`EVENT_THREAD_COUNT`
`static HazelcastProperty`	`GENERIC_OPERATION_THREAD_COUNT` The number of generic operation handler threads per Member.
`static HazelcastProperty`	`GRACEFUL_SHUTDOWN_MAX_WAIT`
`static HazelcastProperty`	`HEALTH_MONITORING_DELAY_SECONDS`
`static HazelcastProperty`	`HEALTH_MONITORING_LEVEL`
`static HazelcastProperty`	`HEALTH_MONITORING_THRESHOLD_CPU_PERCENTAGE`
`static HazelcastProperty`	`HEALTH_MONITORING_THRESHOLD_MEMORY_PERCENTAGE`
`static HazelcastProperty`	`HEARTBEAT_INTERVAL_SECONDS`
`static HazelcastProperty`	`HTTP_HEALTHCHECK_ENABLED`
`static HazelcastProperty`	`ICMP_ENABLED` If a member should be pinged when a sufficient amount of heartbeats have passed and the member has not sent any heartbeats.
`static HazelcastProperty`	`ICMP_TIMEOUT` Ping timeout in milliseconds.
`static HazelcastProperty`	`ICMP_TTL` Ping TTL (maximum numbers of hops to try the maximum numbers of hops the packets should go through or 0 for the default.
`static HazelcastProperty`	`INIT_CLUSTER_VERSION` Override cluster version to use while node is not yet member of a cluster.
`static HazelcastProperty`	`INITIAL_MIN_CLUSTER_SIZE`
`static HazelcastProperty`	`INITIAL_WAIT_SECONDS`
`static HazelcastProperty`	`IO_BALANCER_INTERVAL_SECONDS` The interval in seconds between `IOBalancer` executions.
`static HazelcastProperty`	`IO_INPUT_THREAD_COUNT` Controls the number of socket input threads.
`static HazelcastProperty`	`IO_OUTPUT_THREAD_COUNT` Controls the number of socket output threads.
`static HazelcastProperty`	`IO_THREAD_COUNT` The number of threads doing socket input and the number of threads doing socket output.
`static HazelcastProperty`	`JCACHE_PROVIDER_TYPE` Forces the JCache provider, which can have values client or server, to force the provider type.
`static HazelcastProperty`	`JMX_UPDATE_INTERVAL_SECONDS`
`static HazelcastProperty`	`LOCK_MAX_LEASE_TIME_SECONDS`
`static HazelcastProperty`	`LOGGING_TYPE`
`static HazelcastProperty`	`MAP_EXPIRY_DELAY_SECONDS` You can use MAP_EXPIRY_DELAY_SECONDS to deal with some possible edge cases, such as using EntryProcessor.
`static HazelcastProperty`	`MAP_INVALIDATION_MESSAGE_BATCH_ENABLED` Defines Near Cache invalidation event batch sending is enabled or not.
`static HazelcastProperty`	`MAP_INVALIDATION_MESSAGE_BATCH_FREQUENCY_SECONDS` Defines the Near Cache invalidation event batch sending frequency in seconds.
`static HazelcastProperty`	`MAP_INVALIDATION_MESSAGE_BATCH_SIZE` Defines the maximum number of Near Cache invalidation events to be drained and sent to the event Near Cache in a batch.
`static HazelcastProperty`	`MAP_LOAD_CHUNK_SIZE`
`static HazelcastProperty`	`MAP_REPLICA_SCHEDULED_TASK_DELAY_SECONDS`
`static HazelcastProperty`	`MAP_WRITE_BEHIND_QUEUE_CAPACITY` Setting this capacity is valid if you set `MapStoreConfig.writeCoalescing` to `false`.
`static HazelcastProperty`	`MASTER_CONFIRMATION_INTERVAL_SECONDS` The interval at which master confirmations are sent from non-master nodes to the master node
`static HazelcastProperty`	`MAX_JOIN_MERGE_TARGET_SECONDS`
`static HazelcastProperty`	`MAX_JOIN_SECONDS`
`static HazelcastProperty`	`MAX_NO_HEARTBEAT_SECONDS` The timeout which defines when a cluster member is removed because it has not sent any heartbeats.
`static HazelcastProperty`	`MAX_NO_MASTER_CONFIRMATION_SECONDS` The timeout which defines when a cluster member is removed because it has not sent any master confirmations.
`static HazelcastProperty`	`MAX_WAIT_SECONDS_BEFORE_JOIN`
`static HazelcastProperty`	`MC_MAX_VISIBLE_INSTANCE_COUNT`
`static HazelcastProperty`	`MC_MAX_VISIBLE_SLOW_OPERATION_COUNT`
`static HazelcastProperty`	`MC_URL_CHANGE_ENABLED`
`static HazelcastProperty`	`MEMBER_LIST_PUBLISH_INTERVAL_SECONDS` The interval at which the master sends the member lists are sent to other non-master members
`static HazelcastProperty`	`MEMCACHE_ENABLED`
`static HazelcastProperty`	`MERGE_FIRST_RUN_DELAY_SECONDS` The delay until the first run of the `SplitBrainHandler`
`static HazelcastProperty`	`MERGE_NEXT_RUN_DELAY_SECONDS` The interval between invocations of the `SplitBrainHandler`
`static HazelcastProperty`	`OPERATION_BACKUP_TIMEOUT_MILLIS` If an operation has backups and the backups don't complete in time, then some cleanup logic can be executed.
`static HazelcastProperty`	`OPERATION_CALL_TIMEOUT_MILLIS`
`static HazelcastProperty`	`PARTITION_BACKUP_SYNC_INTERVAL`
`static HazelcastProperty`	`PARTITION_COUNT` Total number of partitions in the Hazelcast cluster.
`static HazelcastProperty`	`PARTITION_MAX_PARALLEL_REPLICATIONS`
`static HazelcastProperty`	`PARTITION_MIGRATION_INTERVAL`
`static HazelcastProperty`	`PARTITION_MIGRATION_TIMEOUT`
`static HazelcastProperty`	`PARTITION_MIGRATION_ZIP_ENABLED`
`static HazelcastProperty`	`PARTITION_OPERATION_THREAD_COUNT` The number of partition operation handler threads per Member.
`static HazelcastProperty`	`PARTITION_TABLE_SEND_INTERVAL`
`static HazelcastProperty`	`PARTITIONING_STRATEGY_CLASS`
`static HazelcastProperty`	`PHONE_HOME_ENABLED`
`static HazelcastProperty`	`PREFER_IPv4_STACK`
`static HazelcastProperty`	`PRIORITY_GENERIC_OPERATION_THREAD_COUNT` The number of priority generic operation handler threads per Member.
`static HazelcastProperty`	`QUERY_MAX_LOCAL_PARTITION_LIMIT_FOR_PRE_CHECK` Maximum value of local partitions to trigger local pre-check for `TruePredicate` query operations on maps.
`static HazelcastProperty`	`QUERY_OPTIMIZER_TYPE` Type of Query Optimizer.
`static HazelcastProperty`	`QUERY_PREDICATE_PARALLEL_EVALUATION` Run Query Evaluations for multiple partitions in parallel.
`static HazelcastProperty`	`QUERY_RESULT_SIZE_LIMIT` Result size limit for query operations on maps.
`static HazelcastProperty`	`REST_ENABLED`
`static HazelcastProperty`	`SERIALIZATION_VERSION` Hazelcast serialization version.
`static HazelcastProperty`	`SHUTDOWNHOOK_ENABLED`
`static HazelcastProperty`	`SHUTDOWNHOOK_POLICY` Behaviour when JVM is about to exit while Hazelcast instance is still running.
`static HazelcastProperty`	`SLOW_INVOCATION_DETECTOR_THRESHOLD_MILLIS` Deprecated.
`static HazelcastProperty`	`SLOW_OPERATION_DETECTOR_ENABLED` Enables or disables the `SlowOperationDetector`.
`static HazelcastProperty`	`SLOW_OPERATION_DETECTOR_LOG_PURGE_INTERVAL_SECONDS` Purge interval for slow operation logs.
`static HazelcastProperty`	`SLOW_OPERATION_DETECTOR_LOG_RETENTION_SECONDS` This value defines the retention time of invocations in slow operation logs.
`static HazelcastProperty`	`SLOW_OPERATION_DETECTOR_STACK_TRACE_LOGGING_ENABLED` Defines if the stacktraces of slow operations are logged in the log file.
`static HazelcastProperty`	`SLOW_OPERATION_DETECTOR_THRESHOLD_MILLIS` Defines a threshold above which a running operation in `OperationService` is considered to be slow.
`static HazelcastProperty`	`SOCKET_BIND_ANY`
`static HazelcastProperty`	`SOCKET_BUFFER_DIRECT` If the bytebuffers used in the socket should be a direct bytebuffer (true) or a regular bytebuffer (false).
`static HazelcastProperty`	`SOCKET_CLIENT_BIND`
`static HazelcastProperty`	`SOCKET_CLIENT_BIND_ANY`
`static HazelcastProperty`	`SOCKET_CLIENT_BUFFER_DIRECT`
`static HazelcastProperty`	`SOCKET_CLIENT_RECEIVE_BUFFER_SIZE` Overrides receive buffer size for connections opened by clients.
`static HazelcastProperty`	`SOCKET_CLIENT_SEND_BUFFER_SIZE` Overrides send buffer size for connections opened by clients.
`static HazelcastProperty`	`SOCKET_CONNECT_TIMEOUT_SECONDS`
`static HazelcastProperty`	`SOCKET_KEEP_ALIVE`
`static HazelcastProperty`	`SOCKET_LINGER_SECONDS`
`static HazelcastProperty`	`SOCKET_NO_DELAY`
`static HazelcastProperty`	`SOCKET_RECEIVE_BUFFER_SIZE`
`static HazelcastProperty`	`SOCKET_SEND_BUFFER_SIZE`
`static HazelcastProperty`	`SOCKET_SERVER_BIND_ANY`
`static HazelcastProperty`	`SYSTEM_LOG_ENABLED`
`static HazelcastProperty`	`TCP_JOIN_PORT_TRY_COUNT` The number of incremental ports, starting with port number defined in network configuration, that will be used to connect to a host which is defined without a port in the TCP-IP member list while a node is searching for a cluster.
`static HazelcastProperty`	`VERSION_CHECK_ENABLED` Deprecated.
`static HazelcastProperty`	`WAIT_SECONDS_BEFORE_JOIN`

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - APPLICATION_VALIDATION_TOKEN
```
public static final HazelcastProperty APPLICATION_VALIDATION_TOKEN
```
    Use this property to verify that Hazelcast nodes only join the cluster when their 'application' level configuration is the same.
    If you have multiple machines, and you want to make sure that each machine that joins the cluster has exactly the same 'application level' settings (such as settings that are not part of the Hazelcast configuration, maybe some filepath). To prevent these machines with potential different application level configuration from forming a cluster, you can set this property.
    You could use actual values, such as string paths, but you can also use an md5 hash. We'll give the guarantee that nodes will form a cluster (become a member) only where the token is an exact match. If this token is different, the member can't be started and therefore you will get the guarantee that all members in the cluster will have exactly the same application validation token.
    This validation-token will be checked before member join the cluster.
  - PARTITION_COUNT
```
public static final HazelcastProperty PARTITION_COUNT
```
    Total number of partitions in the Hazelcast cluster.
  - PARTITION_OPERATION_THREAD_COUNT
```
public static final HazelcastProperty PARTITION_OPERATION_THREAD_COUNT
```
    The number of partition operation handler threads per Member.
    If this is less than the number of partitions on a Member partition operations will queue behind other operations of different partitions.
    The default is -1, which means that the value is determined dynamically.
  - GENERIC_OPERATION_THREAD_COUNT
```
public static final HazelcastProperty GENERIC_OPERATION_THREAD_COUNT
```
    The number of generic operation handler threads per Member.
    The default is -1, which means that the value is determined dynamically.
  - PRIORITY_GENERIC_OPERATION_THREAD_COUNT
```
public static final HazelcastProperty PRIORITY_GENERIC_OPERATION_THREAD_COUNT
```
    The number of priority generic operation handler threads per Member.
    The default is 1.
    Having at least 1 priority generic operation thread helps to improve cluster stability since a lot of the cluster operations are generic priority operations and they should get executed as soon as possible. If there is a dedicated generic operation thread, than these operations don't get delayed because the generic threads are busy executing regular user operations. So unless memory consumption is an issue, make sure there is at least 1 thread.
  - CLIENT_ENGINE_THREAD_COUNT
```
public static final HazelcastProperty CLIENT_ENGINE_THREAD_COUNT
```
    The number of threads that the client engine has available for processing requests that are not partition specific. Most of the requests, such as map.put and map.get, are partition specific and will use a partition-operation-thread, but there are also requests that can't be executed on a partition-specific operation-thread, such as multimap.contain(value); because they need to access all partitions on a given member.
  - CLIENT_ENGINE_QUERY_THREAD_COUNT
```
public static final HazelcastProperty CLIENT_ENGINE_QUERY_THREAD_COUNT
```
  - CLIENT_ENDPOINT_REMOVE_DELAY_SECONDS
```
public static final HazelcastProperty CLIENT_ENDPOINT_REMOVE_DELAY_SECONDS
```
    Client connection is removed or owner node of a client is removed from cluster ClientDisconnectedOperation runs and clean all resources of client(listeners are removed, locks/txn are released) With this property, client has a window to connect back and prevent cleaning up its resources.
  - EVENT_THREAD_COUNT
```
public static final HazelcastProperty EVENT_THREAD_COUNT
```
  - EVENT_QUEUE_CAPACITY
```
public static final HazelcastProperty EVENT_QUEUE_CAPACITY
```
  - EVENT_QUEUE_TIMEOUT_MILLIS
```
public static final HazelcastProperty EVENT_QUEUE_TIMEOUT_MILLIS
```
  - EVENT_SYNC_TIMEOUT_MILLIS
```
public static final HazelcastProperty EVENT_SYNC_TIMEOUT_MILLIS
```
    To prevent overload on the outbound connections, once and a while an event is made synchronous by wrapping it in a fake operation and waiting for a fake response. This causes the outbound write queue of the connection to get drained. This timeout configures the maximum amount of waiting time for this fake response. Setting it to a too low value can lead to an uncontrolled growth of the outbound write queue of the connection.
  - HEALTH_MONITORING_LEVEL
```
public static final HazelcastProperty HEALTH_MONITORING_LEVEL
```
  - HEALTH_MONITORING_DELAY_SECONDS
```
public static final HazelcastProperty HEALTH_MONITORING_DELAY_SECONDS
```
  - HEALTH_MONITORING_THRESHOLD_MEMORY_PERCENTAGE
```
public static final HazelcastProperty HEALTH_MONITORING_THRESHOLD_MEMORY_PERCENTAGE
```
  - HEALTH_MONITORING_THRESHOLD_CPU_PERCENTAGE
```
public static final HazelcastProperty HEALTH_MONITORING_THRESHOLD_CPU_PERCENTAGE
```
  - IO_THREAD_COUNT
```
public static final HazelcastProperty IO_THREAD_COUNT
```
    The number of threads doing socket input and the number of threads doing socket output.
    If e.g. 3 is configured, then you get 3 threads doing input and 3 doing output. For individual control check IO_INPUT_THREAD_COUNT and IO_OUTPUT_THREAD_COUNT.
    The default is 3 (so 6 threads).
  - IO_INPUT_THREAD_COUNT
```
public static final HazelcastProperty IO_INPUT_THREAD_COUNT
```
    Controls the number of socket input threads. By default it is the same as IO_THREAD_COUNT.
  - IO_OUTPUT_THREAD_COUNT
```
public static final HazelcastProperty IO_OUTPUT_THREAD_COUNT
```
    Controls the number of socket output threads. By default it is the same as IO_THREAD_COUNT.
  - IO_BALANCER_INTERVAL_SECONDS
```
public static final HazelcastProperty IO_BALANCER_INTERVAL_SECONDS
```
    The interval in seconds between IOBalancer executions. The shorter intervals will catch I/O Imbalance faster, but they will cause higher overhead.
    Please see the documentation of IOBalancer for a detailed explanation of the problem.
    The default is 20 seconds. A value smaller than 1 disables the balancer.
  - PREFER_IPv4_STACK
```
public static final HazelcastProperty PREFER_IPv4_STACK
```
  - VERSION_CHECK_ENABLED
```
@Deprecated
public static final HazelcastProperty VERSION_CHECK_ENABLED
```
    Deprecated.
  - PHONE_HOME_ENABLED
```
public static final HazelcastProperty PHONE_HOME_ENABLED
```
  - CONNECT_ALL_WAIT_SECONDS
```
public static final HazelcastProperty CONNECT_ALL_WAIT_SECONDS
```
  - MEMCACHE_ENABLED
```
public static final HazelcastProperty MEMCACHE_ENABLED
```
  - REST_ENABLED
```
public static final HazelcastProperty REST_ENABLED
```
  - HTTP_HEALTHCHECK_ENABLED
```
public static final HazelcastProperty HTTP_HEALTHCHECK_ENABLED
```
  - MAP_LOAD_CHUNK_SIZE
```
public static final HazelcastProperty MAP_LOAD_CHUNK_SIZE
```
  - MERGE_FIRST_RUN_DELAY_SECONDS
```
public static final HazelcastProperty MERGE_FIRST_RUN_DELAY_SECONDS
```
    The delay until the first run of the SplitBrainHandler
  - MERGE_NEXT_RUN_DELAY_SECONDS
```
public static final HazelcastProperty MERGE_NEXT_RUN_DELAY_SECONDS
```
    The interval between invocations of the SplitBrainHandler
  - OPERATION_CALL_TIMEOUT_MILLIS
```
public static final HazelcastProperty OPERATION_CALL_TIMEOUT_MILLIS
```
  - OPERATION_BACKUP_TIMEOUT_MILLIS
```
public static final HazelcastProperty OPERATION_BACKUP_TIMEOUT_MILLIS
```
    If an operation has backups and the backups don't complete in time, then some cleanup logic can be executed. This property specifies that timeout for backups to complete.
  - SOCKET_BIND_ANY
```
public static final HazelcastProperty SOCKET_BIND_ANY
```
  - SOCKET_SERVER_BIND_ANY
```
public static final HazelcastProperty SOCKET_SERVER_BIND_ANY
```
  - SOCKET_CLIENT_BIND_ANY
```
public static final HazelcastProperty SOCKET_CLIENT_BIND_ANY
```
  - SOCKET_CLIENT_BIND
```
public static final HazelcastProperty SOCKET_CLIENT_BIND
```
  - SOCKET_RECEIVE_BUFFER_SIZE
```
public static final HazelcastProperty SOCKET_RECEIVE_BUFFER_SIZE
```
  - SOCKET_SEND_BUFFER_SIZE
```
public static final HazelcastProperty SOCKET_SEND_BUFFER_SIZE
```
  - SOCKET_BUFFER_DIRECT
```
public static final HazelcastProperty SOCKET_BUFFER_DIRECT
```
    If the bytebuffers used in the socket should be a direct bytebuffer (true) or a regular bytebuffer (false).
  - SOCKET_CLIENT_RECEIVE_BUFFER_SIZE
```
public static final HazelcastProperty SOCKET_CLIENT_RECEIVE_BUFFER_SIZE
```
    Overrides receive buffer size for connections opened by clients.
    Hazelcast creates all connections with receive buffer size set according to #PROP_SOCKET_RECEIVE_BUFFER_SIZE. When it detects a connection was opened by a client then it adjusts receive buffer size according to this property.
    Size is in kilobytes.
    The default is -1 (same as receive buffer size for connections opened by members).
  - SOCKET_CLIENT_SEND_BUFFER_SIZE
```
public static final HazelcastProperty SOCKET_CLIENT_SEND_BUFFER_SIZE
```
    Overrides send buffer size for connections opened by clients.
    Hazelcast creates all connections with send buffer size set according to #PROP_SOCKET_SEND_BUFFER_SIZE. When it detects a connection was opened by a client then it adjusts send buffer size according to this property.
    Size is in kilobytes.
    The default is -1 (same as receive buffer size for connections opened by members).
  - SOCKET_CLIENT_BUFFER_DIRECT
```
public static final HazelcastProperty SOCKET_CLIENT_BUFFER_DIRECT
```
  - SOCKET_LINGER_SECONDS
```
public static final HazelcastProperty SOCKET_LINGER_SECONDS
```
  - SOCKET_CONNECT_TIMEOUT_SECONDS
```
public static final HazelcastProperty SOCKET_CONNECT_TIMEOUT_SECONDS
```
  - SOCKET_KEEP_ALIVE
```
public static final HazelcastProperty SOCKET_KEEP_ALIVE
```
  - SOCKET_NO_DELAY
```
public static final HazelcastProperty SOCKET_NO_DELAY
```
  - SHUTDOWNHOOK_ENABLED
```
public static final HazelcastProperty SHUTDOWNHOOK_ENABLED
```
  - SHUTDOWNHOOK_POLICY
```
public static final HazelcastProperty SHUTDOWNHOOK_POLICY
```
    Behaviour when JVM is about to exit while Hazelcast instance is still running. Possible values: TERMINATE: Terminate Hazelcast immediately GRACEFUL: Initiate graceful shutdown. This can significantly slow-down JVM exit process, but it's tries to retain data safety. Default: TERMINATE You should always shutdown Hazelcast explicitly via HazelcastInstance.shutdown() It's not recommended to rely on shutdown hook, this is a last-effort measure.
  - WAIT_SECONDS_BEFORE_JOIN
```
public static final HazelcastProperty WAIT_SECONDS_BEFORE_JOIN
```
  - MAX_WAIT_SECONDS_BEFORE_JOIN
```
public static final HazelcastProperty MAX_WAIT_SECONDS_BEFORE_JOIN
```
  - MAX_JOIN_SECONDS
```
public static final HazelcastProperty MAX_JOIN_SECONDS
```
  - MAX_JOIN_MERGE_TARGET_SECONDS
```
public static final HazelcastProperty MAX_JOIN_MERGE_TARGET_SECONDS
```
  - HEARTBEAT_INTERVAL_SECONDS
```
public static final HazelcastProperty HEARTBEAT_INTERVAL_SECONDS
```
  - MAX_NO_HEARTBEAT_SECONDS
```
public static final HazelcastProperty MAX_NO_HEARTBEAT_SECONDS
```
    The timeout which defines when a cluster member is removed because it has not sent any heartbeats.
  - MASTER_CONFIRMATION_INTERVAL_SECONDS
```
public static final HazelcastProperty MASTER_CONFIRMATION_INTERVAL_SECONDS
```
    The interval at which master confirmations are sent from non-master nodes to the master node
  - MAX_NO_MASTER_CONFIRMATION_SECONDS
```
public static final HazelcastProperty MAX_NO_MASTER_CONFIRMATION_SECONDS
```
    The timeout which defines when a cluster member is removed because it has not sent any master confirmations.
  - MEMBER_LIST_PUBLISH_INTERVAL_SECONDS
```
public static final HazelcastProperty MEMBER_LIST_PUBLISH_INTERVAL_SECONDS
```
    The interval at which the master sends the member lists are sent to other non-master members
  - CLIENT_HEARTBEAT_TIMEOUT_SECONDS
```
public static final HazelcastProperty CLIENT_HEARTBEAT_TIMEOUT_SECONDS
```
  - CLUSTER_SHUTDOWN_TIMEOUT_SECONDS
```
public static final HazelcastProperty CLUSTER_SHUTDOWN_TIMEOUT_SECONDS
```
  - ICMP_ENABLED
```
public static final HazelcastProperty ICMP_ENABLED
```
    If a member should be pinged when a sufficient amount of heartbeats have passed and the member has not sent any heartbeats. If the member is not reachable, it will be removed.
  - ICMP_TIMEOUT
```
public static final HazelcastProperty ICMP_TIMEOUT
```
    Ping timeout in milliseconds.
  - ICMP_TTL
```
public static final HazelcastProperty ICMP_TTL
```
    Ping TTL (maximum numbers of hops to try the maximum numbers of hops the packets should go through or 0 for the default.
  - INITIAL_MIN_CLUSTER_SIZE
```
public static final HazelcastProperty INITIAL_MIN_CLUSTER_SIZE
```
  - INITIAL_WAIT_SECONDS
```
public static final HazelcastProperty INITIAL_WAIT_SECONDS
```
  - TCP_JOIN_PORT_TRY_COUNT
```
public static final HazelcastProperty TCP_JOIN_PORT_TRY_COUNT
```
    The number of incremental ports, starting with port number defined in network configuration, that will be used to connect to a host which is defined without a port in the TCP-IP member list while a node is searching for a cluster.
  - MAP_REPLICA_SCHEDULED_TASK_DELAY_SECONDS
```
public static final HazelcastProperty MAP_REPLICA_SCHEDULED_TASK_DELAY_SECONDS
```
  - MAP_EXPIRY_DELAY_SECONDS
```
public static final HazelcastProperty MAP_EXPIRY_DELAY_SECONDS
```
    You can use MAP_EXPIRY_DELAY_SECONDS to deal with some possible edge cases, such as using EntryProcessor. Without this delay, you may see that an EntryProcessor running on the owner partition found a key, but EntryBackupProcessor did not find it on backup, and as a result when backup promotes to owner you will end up with an unprocessed key.
  - LOGGING_TYPE
```
public static final HazelcastProperty LOGGING_TYPE
```
  - ENABLE_JMX
```
public static final HazelcastProperty ENABLE_JMX
```
  - ENABLE_JMX_DETAILED
```
public static final HazelcastProperty ENABLE_JMX_DETAILED
```
  - JMX_UPDATE_INTERVAL_SECONDS
```
public static final HazelcastProperty JMX_UPDATE_INTERVAL_SECONDS
```
  - MC_MAX_VISIBLE_INSTANCE_COUNT
```
public static final HazelcastProperty MC_MAX_VISIBLE_INSTANCE_COUNT
```
  - MC_MAX_VISIBLE_SLOW_OPERATION_COUNT
```
public static final HazelcastProperty MC_MAX_VISIBLE_SLOW_OPERATION_COUNT
```
  - MC_URL_CHANGE_ENABLED
```
public static final HazelcastProperty MC_URL_CHANGE_ENABLED
```
  - CONNECTION_MONITOR_INTERVAL
```
public static final HazelcastProperty CONNECTION_MONITOR_INTERVAL
```
  - CONNECTION_MONITOR_MAX_FAULTS
```
public static final HazelcastProperty CONNECTION_MONITOR_MAX_FAULTS
```
  - PARTITION_MIGRATION_INTERVAL
```
public static final HazelcastProperty PARTITION_MIGRATION_INTERVAL
```
  - PARTITION_MIGRATION_TIMEOUT
```
public static final HazelcastProperty PARTITION_MIGRATION_TIMEOUT
```
  - PARTITION_MIGRATION_ZIP_ENABLED
```
public static final HazelcastProperty PARTITION_MIGRATION_ZIP_ENABLED
```
  - DISABLE_STALE_READ_ON_PARTITION_MIGRATION
```
public static final HazelcastProperty DISABLE_STALE_READ_ON_PARTITION_MIGRATION
```
  - PARTITION_TABLE_SEND_INTERVAL
```
public static final HazelcastProperty PARTITION_TABLE_SEND_INTERVAL
```
  - PARTITION_BACKUP_SYNC_INTERVAL
```
public static final HazelcastProperty PARTITION_BACKUP_SYNC_INTERVAL
```
  - PARTITION_MAX_PARALLEL_REPLICATIONS
```
public static final HazelcastProperty PARTITION_MAX_PARALLEL_REPLICATIONS
```
  - PARTITIONING_STRATEGY_CLASS
```
public static final HazelcastProperty PARTITIONING_STRATEGY_CLASS
```
  - GRACEFUL_SHUTDOWN_MAX_WAIT
```
public static final HazelcastProperty GRACEFUL_SHUTDOWN_MAX_WAIT
```
  - SYSTEM_LOG_ENABLED
```
public static final HazelcastProperty SYSTEM_LOG_ENABLED
```
  - SLOW_OPERATION_DETECTOR_ENABLED
```
public static final HazelcastProperty SLOW_OPERATION_DETECTOR_ENABLED
```
    Enables or disables the SlowOperationDetector.
  - SLOW_OPERATION_DETECTOR_THRESHOLD_MILLIS
```
public static final HazelcastProperty SLOW_OPERATION_DETECTOR_THRESHOLD_MILLIS
```
    Defines a threshold above which a running operation in OperationService is considered to be slow. These operations will log a warning and will be shown in the Management Center with detailed information, e.g. stacktrace.
  - SLOW_OPERATION_DETECTOR_LOG_RETENTION_SECONDS
```
public static final HazelcastProperty SLOW_OPERATION_DETECTOR_LOG_RETENTION_SECONDS
```
    This value defines the retention time of invocations in slow operation logs.
    If an invocation is older than this value, it will be purged from the log to prevent unlimited memory usage. When all invocations are purged from a log, the log itself will be deleted.
    
    See Also:
    
    SLOW_OPERATION_DETECTOR_LOG_PURGE_INTERVAL_SECONDS
  - SLOW_OPERATION_DETECTOR_LOG_PURGE_INTERVAL_SECONDS
```
public static final HazelcastProperty SLOW_OPERATION_DETECTOR_LOG_PURGE_INTERVAL_SECONDS
```
    Purge interval for slow operation logs.
    
    See Also:
    
    SLOW_OPERATION_DETECTOR_LOG_RETENTION_SECONDS
  - SLOW_OPERATION_DETECTOR_STACK_TRACE_LOGGING_ENABLED
```
public static final HazelcastProperty SLOW_OPERATION_DETECTOR_STACK_TRACE_LOGGING_ENABLED
```
    Defines if the stacktraces of slow operations are logged in the log file. Stacktraces will always be reported to the Management Center, but by default they are not printed to keep the log size small.
  - SLOW_INVOCATION_DETECTOR_THRESHOLD_MILLIS
```
@Deprecated
public static final HazelcastProperty SLOW_INVOCATION_DETECTOR_THRESHOLD_MILLIS
```
    Deprecated.
    
    Property isn't used anymore.
  - LOCK_MAX_LEASE_TIME_SECONDS
```
public static final HazelcastProperty LOCK_MAX_LEASE_TIME_SECONDS
```
  - ENTERPRISE_LICENSE_KEY
```
public static final HazelcastProperty ENTERPRISE_LICENSE_KEY
```
  - MAP_WRITE_BEHIND_QUEUE_CAPACITY
```
public static final HazelcastProperty MAP_WRITE_BEHIND_QUEUE_CAPACITY
```
    Setting this capacity is valid if you set MapStoreConfig.writeCoalescing to false. Otherwise its value will not be taken into account.
    The per node maximum write-behind queue capacity is the total of all write-behind queue sizes in a node, including backups.
    The maximum value which can be set is Integer.MAX_VALUE
  - CACHE_INVALIDATION_MESSAGE_BATCH_ENABLED
```
public static final HazelcastProperty CACHE_INVALIDATION_MESSAGE_BATCH_ENABLED
```
    Defines cache invalidation event batch sending is enabled or not.
  - CACHE_INVALIDATION_MESSAGE_BATCH_SIZE
```
public static final HazelcastProperty CACHE_INVALIDATION_MESSAGE_BATCH_SIZE
```
    Defines the maximum number of cache invalidation events to be drained and sent to the event listeners in a batch.
  - CACHE_INVALIDATION_MESSAGE_BATCH_FREQUENCY_SECONDS
```
public static final HazelcastProperty CACHE_INVALIDATION_MESSAGE_BATCH_FREQUENCY_SECONDS
```
    Defines the cache invalidation event batch sending frequency in seconds.
    When the number of events do not come up to CACHE_INVALIDATION_MESSAGE_BATCH_SIZE in the given time period (which is defined by this property); those events are gathered into a batch and sent to target.
  - MAP_INVALIDATION_MESSAGE_BATCH_ENABLED
```
public static final HazelcastProperty MAP_INVALIDATION_MESSAGE_BATCH_ENABLED
```
    Defines Near Cache invalidation event batch sending is enabled or not.
  - MAP_INVALIDATION_MESSAGE_BATCH_SIZE
```
public static final HazelcastProperty MAP_INVALIDATION_MESSAGE_BATCH_SIZE
```
    Defines the maximum number of Near Cache invalidation events to be drained and sent to the event Near Cache in a batch.
  - MAP_INVALIDATION_MESSAGE_BATCH_FREQUENCY_SECONDS
```
public static final HazelcastProperty MAP_INVALIDATION_MESSAGE_BATCH_FREQUENCY_SECONDS
```
    Defines the Near Cache invalidation event batch sending frequency in seconds.
    When the number of events do not come up to MAP_INVALIDATION_MESSAGE_BATCH_SIZE in the given time period (which is defined by this property); those events are gathered into a batch and sent to target.
  - BACKPRESSURE_ENABLED
```
public static final HazelcastProperty BACKPRESSURE_ENABLED
```
    Using back pressure, you can prevent an overload of pending asynchronous backups. With a map with a single asynchronous backup, producing asynchronous backups could happen at a higher rate than the consumption of the backup. This can eventually lead to an OOME (especially if the backups are slow).
    With back-pressure enabled, this can't happen.
    Back pressure is implemented by making asynchronous backups operations synchronous. This prevents the internal queues from overflowing because the invoker will wait for the primary and for the backups to complete. The frequency of this is determined by the sync-window. To deal with overloads of backups, the property 'hazelcast.operation.backup.timeout.millis' should be set to a larger value; above 60000 is recommended. Otherwise it can still happen backups accumulate.
  - BACKPRESSURE_SYNCWINDOW
```
public static final HazelcastProperty BACKPRESSURE_SYNCWINDOW
```
    Controls the frequency of a BackupAwareOperation getting its async backups converted to a sync backups. This is needed to prevent an accumulation of asynchronous backups and eventually running into stability issues.
    A sync window of 10 means that 1 in 10 BackupAwareOperations get their async backups convert to sync backups.
    A sync window of 1 means that every BackupAwareOperation get their async backups converted to sync backups. 1 is also the smallest legal value for the sync window.
    There is some randomization going on to prevent resonance. Therefore, with a sync window of n, not every Nth BackupAwareOperation operation gets its async backups converted to sync.
    This property only has meaning when backpressure is enabled.
  - BACKPRESSURE_BACKOFF_TIMEOUT_MILLIS
```
public static final HazelcastProperty BACKPRESSURE_BACKOFF_TIMEOUT_MILLIS
```
    Control the maximum timeout in millis to wait for an invocation space to be available.
    If an invocation can't be made because there are too many pending invocations, then an exponential backoff is done to give the system time to deal with the backlog of invocations. This property controls how long an invocation is allowed to wait before getting a HazelcastOverloadException.
    The value needs to be equal or larger than 0.
  - BACKPRESSURE_MAX_CONCURRENT_INVOCATIONS_PER_PARTITION
```
public static final HazelcastProperty BACKPRESSURE_MAX_CONCURRENT_INVOCATIONS_PER_PARTITION
```
    The maximum number of concurrent invocations per partition.
    To prevent the system from overloading, HZ can apply a constraint on the number of concurrent invocations. If the maximum number of concurrent invocations has been exceeded and a new invocation comes in, then an exponential back-off is applied till eventually a timeout happens or there is room for the invocation.
    By default it is configured as 100. With 271 partitions, that would give (271 + 1) * 100 = 27200 concurrent invocations from a single member. The +1 is for generic operations. The reasons why 100 is chosen are: - there can be concurrent operations that touch a lot of partitions which consume more than 1 invocation, and - certain methods like those from the IExecutor or ILock are also invocations and they can be very long running.
    No promise is made for the invocations being tracked per partition, or if there is a general pool of invocations.
  - QUERY_PREDICATE_PARALLEL_EVALUATION
```
public static final HazelcastProperty QUERY_PREDICATE_PARALLEL_EVALUATION
```
    Run Query Evaluations for multiple partitions in parallel.
    Each Hazelcast member evaluates query predicates using a single thread by default. In most cases the overhead of inter-thread communication overweight benefit of parallel execution.
    When you have a large dataset and/or slow predicate you may benefit from parallel predicate evaluations. Set to true if you are using slow predicates or have > 100,000s entries per member.
    The default is false.
  - AGGREGATION_ACCUMULATION_PARALLEL_EVALUATION
```
public static final HazelcastProperty AGGREGATION_ACCUMULATION_PARALLEL_EVALUATION
```
    Run aggregation accumulation for multiple entries in parallel.
    Each Hazelcast member executes the accumulation stage of an aggregation using a single thread by default. In most cases it pays off to do it in parallel.
    The default is true.
  - QUERY_RESULT_SIZE_LIMIT
```
public static final HazelcastProperty QUERY_RESULT_SIZE_LIMIT
```
    Result size limit for query operations on maps.
    This value defines the maximum number of returned elements for a single query result. If a query exceeds this number of elements, a QueryResultSizeExceededException will be thrown.
    This feature prevents an OOME if a single node is requesting the whole data set of the cluster, such as by executing a query with TruePredicate. This applies internally for the IMap.values(), IMap.keySet() and IMap.entrySet() methods, which are good candidates for OOME in large clusters.
    This feature depends on an equal distribution of the data on the cluster nodes to calculate the result size limit per node. Therefore, there is a minimum value of defined in QueryResultSizeLimiter. Configured values below the minimum will be increased to the minimum.
    The feature can be disabled by setting its value to -1 (which is the default value).
  - QUERY_MAX_LOCAL_PARTITION_LIMIT_FOR_PRE_CHECK
```
public static final HazelcastProperty QUERY_MAX_LOCAL_PARTITION_LIMIT_FOR_PRE_CHECK
```
    Maximum value of local partitions to trigger local pre-check for TruePredicate query operations on maps.
    To limit the result size of a query (PROP_QUERY_RESULT_SIZE_LIMIT); a local pre-check on the requesting node can be done before the query is sent to the cluster. Since this may increase the latency, the pre-check is limited to a maximum number of local partitions.
    By increasing this parameter, you can prevent the execution of the query on the cluster. Increasing this parameter increases the latency due to the prolonged local pre-check.
    The pre-check can be disabled by setting the value to -1.
    
    See Also:
    
    QUERY_RESULT_SIZE_LIMIT
  - QUERY_OPTIMIZER_TYPE
```
public static final HazelcastProperty QUERY_OPTIMIZER_TYPE
```
    Type of Query Optimizer. Valid Values:
    - RULES - for optimizations based on static rules
    - NONE - optimization are disabled
    Values are case sensitive
  - JCACHE_PROVIDER_TYPE
```
public static final HazelcastProperty JCACHE_PROVIDER_TYPE
```
    Forces the JCache provider, which can have values client or server, to force the provider type. If not provided, the provider will be client or server, whichever is found on the classpath first respectively.
  - DISCOVERY_SPI_ENABLED
```
public static final HazelcastProperty DISCOVERY_SPI_ENABLED
```
    Enables the Discovery SPI lookup over the old native implementations. This property is temporary and will eventually be removed when the experimental marker is removed.
    
    Discovery SPI is disabled by default
  - DISCOVERY_SPI_PUBLIC_IP_ENABLED
```
public static final HazelcastProperty DISCOVERY_SPI_PUBLIC_IP_ENABLED
```
    Enables the Discovery Joiner to use public ips from DiscoveredNode. This property is temporary and will eventually be removed when the experimental marker is removed.
    
    Discovery SPI is disabled by default
  - COMPATIBILITY_3_6_CLIENT_ENABLED
```
public static final HazelcastProperty COMPATIBILITY_3_6_CLIENT_ENABLED
```
    When this property is true, if the server can not determine the connected client version, it shall assume that it is of 3.6.x version client. This property is especially needed if you are using ICache (or JCache).
  - SERIALIZATION_VERSION
```
public static final HazelcastProperty SERIALIZATION_VERSION
```
    Hazelcast serialization version. This is single byte value between 1 and Max supported serialization version.
    
    See Also:
    
    BuildInfo.getSerializationVersion()
  - INIT_CLUSTER_VERSION
```
public static final HazelcastProperty INIT_CLUSTER_VERSION
```
    Override cluster version to use while node is not yet member of a cluster. The cluster version assumed before joining a cluster may affect the serialization format of cluster discovery & join operations and its compatibility with members of a cluster running on different Hazelcast codebase versions. The default is to use the node's codebase version. You may need to override it for your node to join a cluster running on a previous cluster version.

Class GroupProperty

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

APPLICATION_VALIDATION_TOKEN

PARTITION_COUNT

PARTITION_OPERATION_THREAD_COUNT

GENERIC_OPERATION_THREAD_COUNT

PRIORITY_GENERIC_OPERATION_THREAD_COUNT

CLIENT_ENGINE_THREAD_COUNT

CLIENT_ENGINE_QUERY_THREAD_COUNT

CLIENT_ENDPOINT_REMOVE_DELAY_SECONDS

EVENT_THREAD_COUNT

EVENT_QUEUE_CAPACITY

EVENT_QUEUE_TIMEOUT_MILLIS

EVENT_SYNC_TIMEOUT_MILLIS

HEALTH_MONITORING_LEVEL

HEALTH_MONITORING_DELAY_SECONDS

HEALTH_MONITORING_THRESHOLD_MEMORY_PERCENTAGE

HEALTH_MONITORING_THRESHOLD_CPU_PERCENTAGE

IO_THREAD_COUNT

IO_INPUT_THREAD_COUNT

IO_OUTPUT_THREAD_COUNT

IO_BALANCER_INTERVAL_SECONDS

PREFER_IPv4_STACK

VERSION_CHECK_ENABLED

PHONE_HOME_ENABLED

CONNECT_ALL_WAIT_SECONDS

MEMCACHE_ENABLED

REST_ENABLED

HTTP_HEALTHCHECK_ENABLED

MAP_LOAD_CHUNK_SIZE

MERGE_FIRST_RUN_DELAY_SECONDS

MERGE_NEXT_RUN_DELAY_SECONDS

OPERATION_CALL_TIMEOUT_MILLIS

OPERATION_BACKUP_TIMEOUT_MILLIS

SOCKET_BIND_ANY

SOCKET_SERVER_BIND_ANY

SOCKET_CLIENT_BIND_ANY

SOCKET_CLIENT_BIND

SOCKET_RECEIVE_BUFFER_SIZE

SOCKET_SEND_BUFFER_SIZE

SOCKET_BUFFER_DIRECT

SOCKET_CLIENT_RECEIVE_BUFFER_SIZE

SOCKET_CLIENT_SEND_BUFFER_SIZE

SOCKET_CLIENT_BUFFER_DIRECT

SOCKET_LINGER_SECONDS

SOCKET_CONNECT_TIMEOUT_SECONDS

SOCKET_KEEP_ALIVE

SOCKET_NO_DELAY

SHUTDOWNHOOK_ENABLED

SHUTDOWNHOOK_POLICY

WAIT_SECONDS_BEFORE_JOIN

MAX_WAIT_SECONDS_BEFORE_JOIN

MAX_JOIN_SECONDS

MAX_JOIN_MERGE_TARGET_SECONDS

HEARTBEAT_INTERVAL_SECONDS

MAX_NO_HEARTBEAT_SECONDS

MASTER_CONFIRMATION_INTERVAL_SECONDS

MAX_NO_MASTER_CONFIRMATION_SECONDS

MEMBER_LIST_PUBLISH_INTERVAL_SECONDS

CLIENT_HEARTBEAT_TIMEOUT_SECONDS

CLUSTER_SHUTDOWN_TIMEOUT_SECONDS

ICMP_ENABLED

ICMP_TIMEOUT

ICMP_TTL

INITIAL_MIN_CLUSTER_SIZE

INITIAL_WAIT_SECONDS

TCP_JOIN_PORT_TRY_COUNT

MAP_REPLICA_SCHEDULED_TASK_DELAY_SECONDS

MAP_EXPIRY_DELAY_SECONDS

LOGGING_TYPE

ENABLE_JMX

ENABLE_JMX_DETAILED

JMX_UPDATE_INTERVAL_SECONDS

MC_MAX_VISIBLE_INSTANCE_COUNT

MC_MAX_VISIBLE_SLOW_OPERATION_COUNT

MC_URL_CHANGE_ENABLED

CONNECTION_MONITOR_INTERVAL