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https://issues.apache.org/jira/browse/ZOOKEEPER-2572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16150449#comment-16150449
 ] 

Hadoop QA commented on ZOOKEEPER-2572:
--------------------------------------

+1 overall.  GitHub Pull Request  Build
      

    +1 @author.  The patch does not contain any @author tags.

    +0 tests included.  The patch appears to be a documentation patch that 
doesn't require tests.

    +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 (version 3.0.1) 
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: 
https://builds.apache.org/job/PreCommit-ZOOKEEPER-github-pr-build/988//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-ZOOKEEPER-github-pr-build/988//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: 
https://builds.apache.org/job/PreCommit-ZOOKEEPER-github-pr-build/988//console

This message is automatically generated.

> Potential resource leak in FileTxnLog.truncate
> ----------------------------------------------
>
>                 Key: ZOOKEEPER-2572
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2572
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.4.9, 3.5.2
>            Reporter: Michael Han
>            Assignee: gaoshu
>             Fix For: 3.5.4, 3.6.0, 3.4.11
>
>
> In FileTxnLog.truncate, we have:
> {code}
> public boolean truncate(long zxid) throws IOException {
>         FileTxnIterator itr = null;
>         try {
>             itr = new FileTxnIterator(this.logDir, zxid);
>             PositionInputStream input = itr.inputStream;
>             if(input == null) {
>                 throw new IOException("No log files found to truncate! This 
> could " +
>                         "happen if you still have snapshots from an old setup 
> or " +
>                         "log files were deleted accidentally or dataLogDir 
> was changed in zoo.cfg.");
>             }
>             long pos = input.getPosition();
>             // now, truncate at the current position
>             RandomAccessFile raf=new RandomAccessFile(itr.logFile,"rw");
>             raf.setLength(pos);
>             raf.close();
>             while(itr.goToNextLog()) {
>                 if (!itr.logFile.delete()) {
>                     LOG.warn("Unable to truncate {}", itr.logFile);
>                 }
>             }
>         } finally {
>             close(itr);
>         }
>         return true;
>     }
> {code}
> {{raf}} here can be potentially in a state of not closed after leaving the 
> method, if there is an (IO) exception thrown from setLength.



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