[jbosscache-issues] [JBoss JIRA] Commented: (JBCACHE-1565) Locking doesn't work when replication is used

Locking doesn't work when replication is used --------------------------------------------- Key: JBCACHE-1565 URL: https://jira.jboss.org/jira/browse/JBCACHE-1565 Project: JBoss Cache Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 3.2.1.GA Environment: Linux, Sun Java 5.0 Reporter: tbech Assignee: Manik Surtani Priority: Critical Attachments: ConcurrentWritersTest.java, exc.txt, GetPutCachebenchCluster.xml, GetPutTest.java, JBossCache321Wrapper.java, mvcc-repl-sync.xml During performance tests of JBossCache, I've tried to test transactions with cache.getInvocationContext().getOptionOverrides().setForceWriteLock operation ('select-for-update'). I've used standard jbosscache benchmark from svn. I've created new product jbosscache3.2.1 based on 3.1.0 and new test. Basicaly it did: try { long startTime = System.nanoTime(); if (concurrentWrites) { cacheWrapper.startTransaction(); cacheWrapper.setForceWriteLock(true); } ObjectInCache o = (ObjectInCache) cacheWrapper.get(path, key); o = new ObjectInCache(Integer.valueOf(o.getVal().intValue() + 1), randStr[taskNumber%randStr.length]); cacheWrapper.put(path, key, o); if (concurrentWrites) { cacheWrapper.endTransaction(true); } long statValue = (System.nanoTime() - startTime); descriptiveStatistics.addValue(statValue); } catch (Throwable e) { log.error("Error appeared whilst writing to cache:" + e.getMessage(), e); try { if (concurrentWrites) { cacheWrapper.endTransaction(false); } } finally { } } finally { logRunCount(taskNumber); } concurrentWrites was set to true. This tests passes nicely in one node (local mode). However in 2,3,4 nodes it fails after first usage of the same object by different node with exception: org.jboss.cache.lock.TimeoutException: Unable to acquire lock on Fqn [/concurrent/Intermediate-0/Node 0] after [240000] milliseconds for requestor [GlobalTransaction:<10.118.236.212:40325>:0]! Lock held by [GlobalTransaction:<10.118.236.211:8112>:40] at org.jboss.cache.mvcc.MVCCNodeHelper.acquireLock(MVCCNodeHelper.java:159) It looks like, in replication the node is not beeing releases after transaction commit.