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https://issues.apache.org/jira/browse/HBASE-8599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13704853#comment-13704853
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Hadoop QA commented on HBASE-8599:
----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12591675/8599-trunk-v3.patch
against trunk revision .
{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 hadoop1.0{color}. The patch compiles against the hadoop
1.0 profile.
{color:green}+1 hadoop2.0{color}. The patch compiles against the hadoop
2.0 profile.
{color:green}+1 javadoc{color}. The javadoc tool did not generate any
warning messages.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 1.3.9) 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:
org.apache.hadoop.hbase.client.TestAdmin
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/6294//console
This message is automatically generated.
> HLogs in ZK are not cleaned up when replication lag is minimal
> --------------------------------------------------------------
>
> Key: HBASE-8599
> URL: https://issues.apache.org/jira/browse/HBASE-8599
> Project: HBase
> Issue Type: Improvement
> Components: Replication
> Affects Versions: 0.98.0, 0.94.7
> Reporter: Varun Sharma
> Assignee: Varun Sharma
> Fix For: 0.98.0, 0.94.10
>
> Attachments: 8599-0.94.patch, 8599-trunk.patch, 8599-trunk-v2.patch,
> 8599-trunk-v3.patch
>
>
> On a cluster with very low replication lag (as measured by ageOfLastShippedOp
> on source), we found HLogs accumulating and not being cleaned up as new
> WAL(s) are rolled.
> Each time, we call logPositionAndCleanOldLogs() to clean older logs whenever
> the current WAL is not being written to any more - as suggested by
> currentWALBeingWrittenTo being false. However, when lags are small, we may
> hit the following block first and continue onto the next WAL without clearing
> the old WAL(s)...
> ReplicationSource::run() {
> if (readAllEntriesToReplicateOrNextFile(currentWALisBeingWrittenTo =
> false)) {
> // If we are here, then we advance to the next WAL without any
> cleaning
> // and close existing WAL
> continue;
> }
> // Ship some edits and call logPositionAndCleanOldLogs
> }
> If we hit readAllEntriesToReplicateOrNextFile(false) only once - then older
> logs are not cleaned out and persist in the zookeeper node since we simply
> call "continue" and skip the subsequent logPositionAndCleanOldLogs call - if
> its called more than once, we do end up clearing the old logs.
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