org.apache.hadoop.hive.ql.lock

Class CompileLock

java.lang.Object

org.apache.hadoop.hive.ql.lock.CompileLock

All Implemented Interfaces:

AutoCloseable

public final class CompileLock
extends Object
implements AutoCloseable

Encapsulates HS2 compile lock logic.

Method Summary

Modifier and Type	Method and Description
void	close()
void	release() Releases the compile lock.
boolean	tryAcquire() Acquires the compile lock.

Methods inherited from class java.lang.Object

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

Method Detail

tryAcquire

public boolean tryAcquire()

Acquires the compile lock. If the compile lock wait timeout is configured, it will acquire the lock if it is not held by another thread within the given waiting time.

Returns:

true if the lock was successfully acquired, or false if compile lock wait timeout is configured and either the waiting time elapsed before the lock could be acquired or the current thread was interrupted.

release

public void release()

Releases the compile lock. An underlying Lock implementation will usually impose restrictions on which thread can release a lock (typically only the holder of the lock can release it) and may throw an (unchecked) exception if the restriction is violated.

close

public void close()

Specified by:

close in interface AutoCloseable