Package org.apache.accumulo.server.zookeeper

Class TransactionWatcher

java.lang.Object

org.apache.accumulo.server.zookeeper.TransactionWatcher

public class TransactionWatcher
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	TransactionWatcher.Arbitrator
static class	TransactionWatcher.ZooArbitrator

Constructor Summary

Constructors

Constructor	Description
TransactionWatcher(ServerContext context)
TransactionWatcher(TransactionWatcher.Arbitrator arbitrator)

Method Summary

Modifier and Type	Method	Description
boolean	isActive(long tid)
<T> T	run(String ztxBulk, long tid, Callable<T> callable)
void	runQuietly(String ztxBulk, long tid, Runnable task)	Run task only if transaction is still active in zookeeper.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionWatcher

public TransactionWatcher(TransactionWatcher.Arbitrator arbitrator)

TransactionWatcher

public TransactionWatcher(ServerContext context)

Method Detail

runQuietly

public void runQuietly(String ztxBulk,
                       long tid,
                       Runnable task)

Run task only if transaction is still active in zookeeper. If the tx is no longer active then that task is not run and a debug message is logged indicating the task was ignored.

run

public <T> T run(String ztxBulk,
                 long tid,
                 Callable<T> callable)
          throws Exception

Throws:

Exception

isActive

public boolean isActive(long tid)