alluxio.master.metastore.rocks

Class RocksExclusiveLockHandle

java.lang.Object

alluxio.master.metastore.rocks.RocksExclusiveLockHandle

All Implemented Interfaces:

AutoCloseable

public class RocksExclusiveLockHandle
extends Object
implements AutoCloseable

This is a handle used to manage the write lock(exclusive lock) on RocksStore. The exclusive lock is acquired when ref count is zero, and the StopServing flag ensures no new r/w will come in, so the ref count will stay zero throughout the period. One exception is when the exclusive lock is forced (ignoring uncompleted r/w operations), when the reader comes back the exclusive lock is already held. At this moment when the late reader comes back, it should not update the ref count anymore. See Javadoc on RocksSharedLockHandle.close() for how that is handled.

Constructor Summary

Constructors

Constructor and Description
RocksExclusiveLockHandle(Callable<Void> closeAction) The constructor.

Method Summary

Modifier and Type	Method and Description
void	close()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RocksExclusiveLockHandle

public RocksExclusiveLockHandle(Callable<Void> closeAction)

The constructor.

Parameters:

closeAction - the action called on close

Method Detail

close

public void close()

Specified by:

close in interface AutoCloseable