Package org.apache.solr.cloud

Class LockTree.Session

java.lang.Object

org.apache.solr.cloud.LockTree.Session

Enclosing class:

LockTree

public class LockTree.Session
extends Object

This class is used to mark nodes for which acquiring a lock was attempted but didn't succeed. Lock acquisition failure needs to be "remembered" to trigger failures to acquire a competing lock until the Session is replaced, to prevent tasks enqueued later (and dequeued later once the busy lock got released) from being executed before earlier tasks that failed to execute because the lock wasn't available earlier when they attempted to acquire it.

A new Session is created each time the iteration over the queue tasks is restarted starting at the oldest non running or completed tasks.

Constructor Summary

Constructors

Constructor	Description
Session()

Method Summary

Modifier and Type	Method	Description
OverseerMessageHandler.Lock	lock(CollectionParams.CollectionAction action, List<String> path)

Methods inherited from class java.lang.Object

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

Constructor Detail

Session

public Session()

Method Detail

lock

public OverseerMessageHandler.Lock lock(CollectionParams.CollectionAction action,
                                        List<String> path)