io.druid.indexing.overlord

Class LockResult

java.lang.Object

io.druid.indexing.overlord.LockResult

public class LockResult
extends Object

This class represents the result of TaskLockbox.tryLock(TaskLockType, Task, Interval). If the lock acquisition fails, the callers can tell that it was failed because it was preempted by other locks of higher priorities or not by checking the revoked flag. The revoked flag means that consecutive lock acquisitions for the same dataSource and interval are returning different locks because another lock of a higher priority preempted your lock at some point. In this case, the lock acquisition must fail.

See Also:

TaskLockbox.tryLock(TaskLockType, Task, Interval)

Constructor Summary

Constructors

Constructor and Description
LockResult(TaskLock taskLock, boolean revoked)

Method Summary

Modifier and Type	Method and Description
static LockResult	fail(boolean revoked)
TaskLock	getTaskLock()
boolean	isOk()
boolean	isRevoked()
static LockResult	ok(TaskLock taskLock)

Methods inherited from class java.lang.Object

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

Constructor Detail

LockResult

public LockResult(@Nullable
                  TaskLock taskLock,
                  boolean revoked)

Method Detail

ok

public static LockResult ok(TaskLock taskLock)

fail

public static LockResult fail(boolean revoked)

getTaskLock

public TaskLock getTaskLock()

isRevoked

public boolean isRevoked()

isOk

public boolean isOk()