[jira] Commented: (ZOOKEEPER-783) committedLog in ZKDatabase is not properly synchronized
[ https://issues.apache.org/jira/browse/ZOOKEEPER-783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12892746#action_12892746 ] Hudson commented on ZOOKEEPER-783: -- Integrated in ZooKeeper-trunk #887 (See [http://hudson.zones.apache.org/hudson/job/ZooKeeper-trunk/887/]) ZOOKEEPER-783. committedLog in ZKDatabase is not properly synchronized (henry via mahadev) committedLog in ZKDatabase is not properly synchronized --- Key: ZOOKEEPER-783 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-783 Project: Zookeeper Issue Type: Bug Components: server Affects Versions: 3.3.1 Reporter: Henry Robinson Assignee: Henry Robinson Priority: Critical Fix For: 3.3.2, 3.4.0 Attachments: ZOOKEEPER-783.patch ZKDatabase.getCommittedLog() returns a reference to the LinkedListProposal committedLog in ZKDatabase. This is then iterated over by at least one caller. I have seen a bug that causes a NPE in LinkedList.clear on committedLog, which I am pretty sure is due to the lack of synchronization. This bug has not been apparent in normal ZK operation, but in code that I have that starts and stops a ZK server in process repeatedly (clear() is called from ZooKeeperServerMain.shutdown()). It's better style to defensively copy the list in getCommittedLog, and to synchronize on the list in ZKDatabase.clear. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Commented: (ZOOKEEPER-783) committedLog in ZKDatabase is not properly synchronized
[ https://issues.apache.org/jira/browse/ZOOKEEPER-783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12892500#action_12892500 ] Mahadev konar commented on ZOOKEEPER-783: - +1 the patch looks good! committedLog in ZKDatabase is not properly synchronized --- Key: ZOOKEEPER-783 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-783 Project: Zookeeper Issue Type: Bug Components: server Affects Versions: 3.3.1 Reporter: Henry Robinson Assignee: Henry Robinson Priority: Critical Fix For: 3.3.2, 3.4.0 Attachments: ZOOKEEPER-783.patch ZKDatabase.getCommittedLog() returns a reference to the LinkedListProposal committedLog in ZKDatabase. This is then iterated over by at least one caller. I have seen a bug that causes a NPE in LinkedList.clear on committedLog, which I am pretty sure is due to the lack of synchronization. This bug has not been apparent in normal ZK operation, but in code that I have that starts and stops a ZK server in process repeatedly (clear() is called from ZooKeeperServerMain.shutdown()). It's better style to defensively copy the list in getCommittedLog, and to synchronize on the list in ZKDatabase.clear. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Commented: (ZOOKEEPER-783) committedLog in ZKDatabase is not properly synchronized
[ https://issues.apache.org/jira/browse/ZOOKEEPER-783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12887891#action_12887891 ] Hadoop QA commented on ZOOKEEPER-783: - -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12446054/ZOOKEEPER-783.patch against trunk revision 962697. +1 @author. The patch does not contain any @author tags. -1 tests included. The patch doesn't appear to include any new or modified tests. Please justify why no tests are needed for this patch. +1 javadoc. The javadoc tool did not generate any warning messages. +1 javac. The applied patch does not increase the total number of javac compiler warnings. +1 findbugs. The patch does not introduce any new Findbugs warnings. +1 release audit. The applied patch does not increase the total number of release audit warnings. +1 core tests. The patch passed core unit tests. +1 contrib tests. The patch passed contrib unit tests. Test results: http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-h1.grid.sp2.yahoo.net/142/testReport/ Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-h1.grid.sp2.yahoo.net/142/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html Console output: http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-h1.grid.sp2.yahoo.net/142/console This message is automatically generated. committedLog in ZKDatabase is not properly synchronized --- Key: ZOOKEEPER-783 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-783 Project: Zookeeper Issue Type: Bug Components: server Affects Versions: 3.3.1 Reporter: Henry Robinson Assignee: Henry Robinson Priority: Critical Fix For: 3.3.2, 3.4.0 Attachments: ZOOKEEPER-783.patch ZKDatabase.getCommittedLog() returns a reference to the LinkedListProposal committedLog in ZKDatabase. This is then iterated over by at least one caller. I have seen a bug that causes a NPE in LinkedList.clear on committedLog, which I am pretty sure is due to the lack of synchronization. This bug has not been apparent in normal ZK operation, but in code that I have that starts and stops a ZK server in process repeatedly (clear() is called from ZooKeeperServerMain.shutdown()). It's better style to defensively copy the list in getCommittedLog, and to synchronize on the list in ZKDatabase.clear. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
