| Package | Description | 
|---|---|
| com.hazelcast.instance | This package contains Hazelcast Instance functionality. | 
| com.hazelcast.internal.diagnostics | Contains functionality what is happening in a HazelcastInstance. | 
| com.hazelcast.nio.tcp | Contains functionality for the TCP/IP Networking between cluster members This whole package is internal and no compatibility will be provided. | 
| com.hazelcast.nio.tcp.nonblocking | Contains the non blocking  TcpIpConnectionMonitor. | 
| com.hazelcast.nio.tcp.nonblocking.iobalancer | Contains Handler Migration classes | 
| com.hazelcast.nio.tcp.spinning | Contains the implementation of the  SpinningIOThreadingModel. | 
| com.hazelcast.spi.impl.operationexecutor.impl | Contains the  OperationExecutorImplcode. | 
| com.hazelcast.spi.impl.operationexecutor.slowoperationdetector | Contains the functionality to detect slow running operations using the
  OperationRunnerinstances from theOperationExecutor. | 
| com.hazelcast.util.executor | This package contains classes related to Util.Executor  | 
| Modifier and Type | Method and Description | 
|---|---|
| HazelcastThreadGroup | Node. getHazelcastThreadGroup() | 
| Constructor and Description | 
|---|
| Diagnostics(String fileName,
           ILogger logger,
           HazelcastThreadGroup hzThreadGroup,
           HazelcastProperties properties) | 
| Constructor and Description | 
|---|
| TcpIpConnectionManager(IOService ioService,
                      ServerSocketChannel serverSocketChannel,
                      MetricsRegistry metricsRegistry,
                      HazelcastThreadGroup threadGroup,
                      LoggingService loggingService) | 
| Constructor and Description | 
|---|
| NonBlockingIOThreadingModel(IOService ioService,
                           LoggingService loggingService,
                           MetricsRegistry metricsRegistry,
                           HazelcastThreadGroup hazelcastThreadGroup) | 
| Constructor and Description | 
|---|
| IOBalancer(NonBlockingIOThread[] inputThreads,
          NonBlockingIOThread[] outputThreads,
          HazelcastThreadGroup threadGroup,
          int balancerIntervalSeconds,
          LoggingService loggingService) | 
| Constructor and Description | 
|---|
| SpinningInputThread(HazelcastThreadGroup threadGroup,
                   ILogger logger) | 
| SpinningIOThreadingModel(IOService ioService,
                        LoggingService loggingService,
                        MetricsRegistry metricsRegistry,
                        HazelcastThreadGroup hazelcastThreadGroup) | 
| SpinningOutputThread(HazelcastThreadGroup threadGroup,
                    ILogger logger) | 
| Constructor and Description | 
|---|
| GenericOperationThread(String name,
                      int threadId,
                      OperationQueue queue,
                      ILogger logger,
                      HazelcastThreadGroup threadGroup,
                      NodeExtension nodeExtension,
                      OperationRunner operationRunner,
                      boolean priority) | 
| OperationExecutorImpl(HazelcastProperties properties,
                     LoggingService loggerService,
                     Address thisAddress,
                     OperationRunnerFactory operationRunnerFactory,
                     HazelcastThreadGroup threadGroup,
                     NodeExtension nodeExtension) | 
| OperationThread(String name,
               int threadId,
               OperationQueue queue,
               ILogger logger,
               HazelcastThreadGroup threadGroup,
               NodeExtension nodeExtension,
               boolean priority) | 
| PartitionOperationThread(String name,
                        int threadId,
                        OperationQueue queue,
                        ILogger logger,
                        HazelcastThreadGroup threadGroup,
                        NodeExtension nodeExtension,
                        OperationRunner[] partitionOperationRunners) | 
| Constructor and Description | 
|---|
| SlowOperationDetector(LoggingService loggingServices,
                     OperationRunner[] genericOperationRunners,
                     OperationRunner[] partitionOperationRunners,
                     HazelcastProperties hazelcastProperties,
                     HazelcastThreadGroup hazelcastThreadGroup) | 
| Constructor and Description | 
|---|
| PoolExecutorThreadFactory(HazelcastThreadGroup threadGroup,
                         String threadNamePrefix) | 
| SingleExecutorThreadFactory(HazelcastThreadGroup threadGroup,
                           String threadName) | 
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