[jira] [Updated] (ZOOKEEPER-2464) NullPointerException on ContainerManager
[ https://issues.apache.org/jira/browse/ZOOKEEPER-2464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Edward Ribeiro updated ZOOKEEPER-2464: -- Attachment: ContainerManagerTest.java +1, lgtm. Hey, [~randgalt], I have just seen that ZK projects imports mockito framework but only uses it on a single test case (as far as my quick-and-dirty search showed). *If you want to add a test case to this bug*, then I am attaching a class that can be uses mockito to do so. If you decide it's too much boilerplate for little benefit then no problem leaving it out of this patch. *It's up to you to include it or not, just an idea*. :) In either case, we are good to go with this patch, IMHO. Please, any committer would mind to merge it as soon as possible? /cc [~hanm], [~arshadmohammad]? > NullPointerException on ContainerManager > > > Key: ZOOKEEPER-2464 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2464 > Project: ZooKeeper > Issue Type: Bug > Components: server >Affects Versions: 3.5.1 >Reporter: Stefano Salmaso >Assignee: Jordan Zimmerman > Fix For: 3.5.3, 3.6.0 > > Attachments: ContainerManagerTest.java, ZOOKEEPER-2464.patch > > > I would like to expose you to a problem that we are experiencing. > We are using a cluster of 7 zookeeper and we use them to implement a > distributed lock using Curator > (http://curator.apache.org/curator-recipes/shared-reentrant-lock.html) > So .. we tried to play with the servers to see if everything worked properly > and we stopped and start servers to see that the system worked well > (like stop 03, stop 05, stop 06, start 05, start 06, start 03) > We saw a strange behavior. > The number of znodes grew up without stopping (normally we had 4000 or 5000, > we got to 60,000 and then we stopped our application) > In zookeeeper logs I saw this (on leader only, one every minute) > 2016-07-04 14:53:50,302 [myid:7] - ERROR > [ContainerManagerTask:ContainerManager$1@84] - Error checking containers > java.lang.NullPointerException >at > org.apache.zookeeper.server.ContainerManager.getCandidates(ContainerManager.java:151) >at > org.apache.zookeeper.server.ContainerManager.checkContainers(ContainerManager.java:111) >at > org.apache.zookeeper.server.ContainerManager$1.run(ContainerManager.java:78) >at java.util.TimerThread.mainLoop(Timer.java:555) >at java.util.TimerThread.run(Timer.java:505) > We have not yet deleted the data ... so the problem can be reproduced on our > servers -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (ZOOKEEPER-2464) NullPointerException on ContainerManager
[ https://issues.apache.org/jira/browse/ZOOKEEPER-2464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Flavio Junqueira updated ZOOKEEPER-2464: Fix Version/s: 3.6.0 3.5.3 > NullPointerException on ContainerManager > > > Key: ZOOKEEPER-2464 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2464 > Project: ZooKeeper > Issue Type: Bug > Components: server >Affects Versions: 3.5.1 >Reporter: Stefano Salmaso >Assignee: Jordan Zimmerman > Fix For: 3.5.3, 3.6.0 > > Attachments: ZOOKEEPER-2464.patch > > > I would like to expose you to a problem that we are experiencing. > We are using a cluster of 7 zookeeper and we use them to implement a > distributed lock using Curator > (http://curator.apache.org/curator-recipes/shared-reentrant-lock.html) > So .. we tried to play with the servers to see if everything worked properly > and we stopped and start servers to see that the system worked well > (like stop 03, stop 05, stop 06, start 05, start 06, start 03) > We saw a strange behavior. > The number of znodes grew up without stopping (normally we had 4000 or 5000, > we got to 60,000 and then we stopped our application) > In zookeeeper logs I saw this (on leader only, one every minute) > 2016-07-04 14:53:50,302 [myid:7] - ERROR > [ContainerManagerTask:ContainerManager$1@84] - Error checking containers > java.lang.NullPointerException >at > org.apache.zookeeper.server.ContainerManager.getCandidates(ContainerManager.java:151) >at > org.apache.zookeeper.server.ContainerManager.checkContainers(ContainerManager.java:111) >at > org.apache.zookeeper.server.ContainerManager$1.run(ContainerManager.java:78) >at java.util.TimerThread.mainLoop(Timer.java:555) >at java.util.TimerThread.run(Timer.java:505) > We have not yet deleted the data ... so the problem can be reproduced on our > servers -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (ZOOKEEPER-2464) NullPointerException on ContainerManager
[ https://issues.apache.org/jira/browse/ZOOKEEPER-2464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jordan Zimmerman updated ZOOKEEPER-2464: Attachment: ZOOKEEPER-2464.patch node.getChildren() can legally return null > NullPointerException on ContainerManager > > > Key: ZOOKEEPER-2464 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2464 > Project: ZooKeeper > Issue Type: Bug > Components: server >Affects Versions: 3.5.1 >Reporter: Stefano Salmaso >Assignee: Jordan Zimmerman > Attachments: ZOOKEEPER-2464.patch > > > I would like to expose you to a problem that we are experiencing. > We are using a cluster of 7 zookeeper and we use them to implement a > distributed lock using Curator > (http://curator.apache.org/curator-recipes/shared-reentrant-lock.html) > So .. we tried to play with the servers to see if everything worked properly > and we stopped and start servers to see that the system worked well > (like stop 03, stop 05, stop 06, start 05, start 06, start 03) > We saw a strange behavior. > The number of znodes grew up without stopping (normally we had 4000 or 5000, > we got to 60,000 and then we stopped our application) > In zookeeeper logs I saw this (on leader only, one every minute) > 2016-07-04 14:53:50,302 [myid:7] - ERROR > [ContainerManagerTask:ContainerManager$1@84] - Error checking containers > java.lang.NullPointerException >at > org.apache.zookeeper.server.ContainerManager.getCandidates(ContainerManager.java:151) >at > org.apache.zookeeper.server.ContainerManager.checkContainers(ContainerManager.java:111) >at > org.apache.zookeeper.server.ContainerManager$1.run(ContainerManager.java:78) >at java.util.TimerThread.mainLoop(Timer.java:555) >at java.util.TimerThread.run(Timer.java:505) > We have not yet deleted the data ... so the problem can be reproduced on our > servers -- This message was sent by Atlassian JIRA (v6.3.4#6332)
