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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5635) If getTaskList() returns null, splitlogWorker would go down and it won't serve any requests
Date Fri, 20 Apr 2012 19:22:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13258492#comment-13258492

Hadoop QA commented on HBASE-5635:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision .

    +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 new tests are needed for this patch.
                        Also please list what manual steps were performed to verify 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 appears to introduce 7 new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

     -1 core tests.  The patch failed these unit tests:

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/1594//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/1594//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/1594//console

This message is automatically generated.
> If getTaskList() returns null, splitlogWorker would go down and it won't serve any requests
> -------------------------------------------------------------------------------------------
>                 Key: HBASE-5635
>                 URL: https://issues.apache.org/jira/browse/HBASE-5635
>             Project: HBase
>          Issue Type: Bug
>          Components: wal
>    Affects Versions: 0.92.1
>            Reporter: Kristam Subba Swathi
>         Attachments: HBASE-5635.1.patch, HBASE-5635.2.patch, HBASE-5635._trunk.patch,
HBASE-5635.patch, HBASE-5635_0.94.patch
> During the hlog split operation if all the zookeepers are down ,then the paths will be
returned as null and the splitworker thread wil be exited
> Now this regionserver wil not be able to acquire any other tasks since the splitworker
thread is exited
> Please find the attached code for more details
> {code}
> private List<String> getTaskList() {
>     for (int i = 0; i < zkretries; i++) {
>       try {
>         return (ZKUtil.listChildrenAndWatchForNewChildren(this.watcher,
>             this.watcher.splitLogZNode));
>       } catch (KeeperException e) {
>         LOG.warn("Could not get children of znode " +
>             this.watcher.splitLogZNode, e);
>         try {
>           Thread.sleep(1000);
>         } catch (InterruptedException e1) {
>           LOG.warn("Interrupted while trying to get task list ...", e1);
>           Thread.currentThread().interrupt();
>           return null;
>         }
>       }
>     }
> {code}
> in the org.apache.hadoop.hbase.regionserver.SplitLogWorker 

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