12.6. Advanced Configuration Properties

12.6. Advanced Configuration Properties
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There are some advanced configuration properties to tune some aspects of Hazelcast. These can be set as property name and value pairs through configuration xml, configuration API or JVM system property.

Configuration xml

<hazelcast xsi:schemaLocation="http://www.hazelcast.com/schema/config http://www.hazelcast.com/schema/config/hazelcast-config-2.3.xsd"
    xmlns="http://www.hazelcast.com/schema/config"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    ....
    <properties>
        <property name="hazelcast.property.foo">value</property>
            ....
    </properties>
</hazelcast>

Configuration API

Config cfg = new Config() ;
cfg.setProperty("hazelcast.property.foo", "value");

System Property
1. Using JVM parameter: java -Dhazelcast.property.foo=value
2. Using System class: System.setProperty("hazelcast.property.foo", "value");

Table 12.1. Properties Table
Property Name	Description	Value Type	Default
`hazelcast.memcache.enabled`	Enable Memcache client request listener service	boolean	true
`hazelcast.rest.enabled`	Enable REST client request listener service	boolean	true
`hazelcast.logging.type`	Name of logging framework type to send logging events.	enum	jdk
`hazelcast.map.load.chunk.size`	Chunk size for MapLoader 's map initialization process (MapLoder.loadAllKeys())	integer	1000
`hazelcast.in.thread.priority`	Hazelcast Input Thread priority	integer	7
`hazelcast.out.thread.priority`	Hazelcast Output Thread priority	integer	7
`hazelcast.service.thread.priority`	Hazelcast Service Thread priority	integer	8
`hazelcast.merge.first.run.delay.seconds`	Inital run delay of split brain/merge process in seconds	integer	300
`hazelcast.merge.next.run.delay.seconds`	Run interval of split brain/merge process in seconds	integer	120
`hazelcast.redo.wait.millis`	Wait time before a redo operation in milliseconds	integer	500
`hazelcast.redo.log.threshold`	Minimum number of redo(s) before logging.	integer	10
`hazelcast.redo.giveup.threshold`	Number of maximum redo calls before giving up and throwing `OperationTimeoutException`.	integer	60
`hazelcast.backup.redo.enabled`	Enable (strict) redo for backup operations. Backup operations may fail due to node failures, but generally during partition re-assignment process missing backups are restored. When 'hazelcast.backup.redo.enabled' is set to true, #hazelcast.partition.migration.interval should be 0.	boolean	false
`hazelcast.max.operation.timeout`	Maximum operation timeout in milliseconds if no timeout is specified for an operation. (default 300 seconds)	integer	300000
`hazelcast.max.concurrent.operation.limit`	Max number of concurrent operations can be submitted to Hazelcast without throwing `OperationRejectedException` (negative means undefined).	integer	-1
`hazelcast.socket.bind.any`	Bind node socket address to any local address	boolean	true
`hazelcast.socket.receive.buffer.size`	Socket receive buffer size in KB	integer	32
`hazelcast.socket.send.buffer.size`	Socket send buffer size in KB	integer	32
`hazelcast.socket.keep.alive`	Socket set keep alive	boolean	true
`hazelcast.socket.no.delay`	Socket set TCP no delay	boolean	true
`hazelcast.prefer.ipv4.stack`	Prefer Ipv4 network interface when picking a local address.	boolean	true
`hazelcast.shutdownhook.enabled`	Enable Hazelcast shutdownhook thread	boolean	true
`hazelcast.wait.seconds.before.join`	Wait time before join operation	integer	5
`hazelcast.max.wait.seconds.before.join`	Maximum wait time before join operation	integer	20
`hazelcast.heartbeat.interval.seconds`	Heartbeat send interval in seconds	integer	1
`hazelcast.max.no.heartbeat.seconds`	Max timeout of heartbeat in seconds for a node to assume it is dead	integer	300
`hazelcast.icmp.enabled`	Enable ICMP ping	boolean	false
`hazelcast.icmp.timeout`	ICMP timeout in ms	int	1000
`hazelcast.icmp.ttl`	ICMP TTL (maximum numbers of hops to try)	int	0
`hazelcast.prefer.ipv4.stack`	Prefer IPv4 Stack, don't use IPv6. See IPv6 doc.	boolean	true
`hazelcast.initial.min.cluster.size`	Initial expected cluster size to wait before node to start completely	integer	0
`hazelcast.initial.wait.seconds`	Inital time in seconds to wait before node to start completely	integer	0
`hazelcast.restart.on.max.idle`	Restart node if service thread blocked for `hazelcast.max.no.heartbeat.seconds`	boolean	false
`hazelcast.map.partition.count`	Distributed map partition count	integer	271
`hazelcast.map.max.backup.count`	Maximum map backup node count	integer	5
`hazelcast.map.remove.delay.seconds`	Remove delay time in seconds for dirty records	integer	5
`hazelcast.map.cleanup.delay.seconds`	Cleanup process delay time in seconds	integer	10
`hazelcast.executor.query.thread.count`	Query executor service max thread count	integer	8
`hazelcast.executor.event.thread.count`	Event executor service max thread count	integer	16
`hazelcast.executor.client.thread.count`	Client executor service max thread count	integer	40
`hazelcast.executor.store.thread.count`	Map store executor service max thread count	integer	16
`hazelcast.log.state`	Log cluster debug state periodically	boolean	false
`hazelcast.jmx`	Enable JMX agent	boolean	false
`hazelcast.jmx.detailed`	Enable detailed views on JMX	boolean	false
`hazelcast.mc.map.excludes`	Comma seperated map names to exclude from Hazelcast Management Center	CSV	null
`hazelcast.mc.queue.excludes`	Comma seperated queue names to exclude from Hazelcast Management Center	CSV	null
`hazelcast.mc.topic.excludes`	Comma seperated topic names to exclude from Hazelcast Management Center	CSV	null
`hazelcast.version.check.enabled`	Enable Hazelcast new version check on startup	boolean	true
`hazelcast.topic.flow.control.enabled`	Enable waiting for the topic publish until messages are written through the sockets	boolean	true
`hazelcast.mc.max.visible.instance.count`	Management Center maximum visible instance count	integer	100
`hazelcast.connection.monitor.interval`	Minimum interval to consider a connection error as critical in milliseconds.	integer	100
`hazelcast.connection.monitor.max.faults`	Maximum IO error count before disconnecting from a node.	integer	3
`hazelcast.partition.migration.interval`	Interval to run partition migration tasks in seconds.	integer	0
`hazelcast.partition.migration.timeout`	Timeout for partition migration tasks in seconds.	integer	300
`hazelcast.immediate.backup.interval`	Interval to run immediate backup tasks in seconds.	integer	0
`hazelcast.graceful.shutdown.max.wait`	Maximum wait seconds during graceful shutdown.	integer	600
`hazelcast.force.throw.interrupted.exception`	Force throw of RuntimeInterruptedException when a thread is interrupted, otherwise a warning log will be printed.	boolean	false
`hazelcast.mc.url.change.enabled`	Management Center changing server url is enabled	boolean	true
`hazelcast.elastic.memory.enabled`	Enable Hazelcast Elastic Memory off-heap storage	boolean	false
`hazelcast.elastic.memory.total.size`	Hazelcast Elastic Memory storage total size in MB	integer	128
`hazelcast.elastic.memory.chunk.size`	Hazelcast Elastic Memory storage chunk size in KB	integer	1
`hazelcast.elastic.memory.shared.storage`	Enable Hazelcast Elastic Memory shared storage	boolean	false
`hazelcast.enterprise.license.key`	Hazelcast Enterprise license key	string	null

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