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https://issues.apache.org/jira/browse/HBASE-14759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14989550#comment-14989550
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Hadoop QA commented on HBASE-14759:
-----------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12770569/HBASE-14759.patch
against master branch at commit ceddec9141b658c790d2fb995c970982ab082028.
ATTACHMENT ID: 12770569
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 4 new
or modified tests.
{color:green}+1 hadoop versions{color}. The patch compiles with all
supported hadoop versions (2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.0 2.6.1 2.7.0
2.7.1)
{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 post-site goal succeeds with this patch.
{color:green}+1 core tests{color}. The patch passed unit tests in .
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/16385//testReport/
Release Findbugs (version 2.0.3) warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/16385//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors:
https://builds.apache.org/job/PreCommit-HBASE-Build/16385//artifact/patchprocess/checkstyle-aggregate.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/16385//console
This message is automatically generated.
> Avoid using Math.abs when selecting SyncRunner in FSHLog
> --------------------------------------------------------
>
> Key: HBASE-14759
> URL: https://issues.apache.org/jira/browse/HBASE-14759
> Project: HBase
> Issue Type: Bug
> Components: wal
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Attachments: HBASE-14759.patch
>
>
> {code:title=FSHLog.java}
> int index = Math.abs(this.syncRunnerIndex++) % this.syncRunners.length;
> try {
> this.syncRunners[index].offer(sequence, this.syncFutures,
> this.syncFuturesCount);
> } catch (Exception e) {
> // Should NEVER get here.
> requestLogRoll();
> this.exception = new DamagedWALException("Failed offering sync",
> e);
> }
> {code}
> Math.abs will return Integer.MIN_VALUE if you pass Integer.MIN_VALUE in since
> the actual absolute value of Integer.MIN_VALUE is out of range.
> I think {{this.syncRunnerIndex++}} will overflow eventually if we keep the
> regionserver running for enough time.
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