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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13885) ZK watches leaks during snapshots
Date Sun, 14 Jun 2015 07:36:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584969#comment-14584969
] 

Hadoop QA commented on HBASE-13885:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12739467/13885-master.txt
  against master branch at commit 682b8ab8a542a903e5807053282693e3a96bad2d.
  ATTACHMENT ID: 12739467

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  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.

    {color:green}+1 hadoop versions{color}. The patch compiles with all supported hadoop versions
(2.4.1 2.5.2 2.6.0)

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 protoc{color}.  The applied patch does not increase the total number of
protoc compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 checkstyle{color}.  The applied patch does not increase the total number
of checkstyle errors

    {color:green}+1 findbugs{color}.  The patch does not introduce any  new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

     {color:red}-1 core tests{color}.  The patch failed these unit tests:
     

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/14399//testReport/
Release Findbugs (version 2.0.3) 	warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/14399//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/14399//artifact/patchprocess/checkstyle-aggregate.html

  Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/14399//console

This message is automatically generated.

> ZK watches leaks during snapshots
> ---------------------------------
>
>                 Key: HBASE-13885
>                 URL: https://issues.apache.org/jira/browse/HBASE-13885
>             Project: HBase
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 0.98.12
>            Reporter: Abhishek Singh Chouhan
>            Assignee: Lars Hofhansl
>            Priority: Critical
>             Fix For: 2.0.0, 0.98.14, 1.0.2, 1.2.0, 1.1.1
>
>         Attachments: 13885-0.98-v2.txt, 13885-0.98-v3.txt, 13885-master.txt
>
>
> When taking snapshot of a table a watcher over /hbase/online-snapshot/abort/snapshot-name
is created which is never cleared when the snapshot is successful. If we use snapshots to
take backups daily we accumulate a lot of watches.
> Steps to reproduce -
> 1) Take snapshot of a table - snapshot 'table_1', 'abc'
> 2) Run the following on zk node or alternatively observe zk watches metric
>  echo "wchc" | nc localhost 2181
> /hbase/online-snapshot/abort/abc can be found.



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