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https://issues.apache.org/jira/browse/HBASE-11315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14052739#comment-14052739
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Hadoop QA commented on HBASE-11315:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12654147/hbase-11315-v1.patch
against trunk revision .
ATTACHMENT ID: 12654147
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 30 new
or modified tests.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:red}-1 javadoc{color}. The javadoc tool appears to have generated 1
warning messages.
{color:red}-1 findbugs{color}. The patch appears to introduce 5 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.regionserver.wal.TestLogRolling
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//artifact/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/9973//console
This message is automatically generated.
> Keeping MVCC for configurable longer time
> ------------------------------------------
>
> Key: HBASE-11315
> URL: https://issues.apache.org/jira/browse/HBASE-11315
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.99.0
> Reporter: Jeffrey Zhong
> Assignee: Jeffrey Zhong
> Attachments: hbase-11315-v1.patch, hbase-11315.patch
>
>
> After hbase-8763, we need keep mvcc number longer in hfile so that it can be
> used to order changes during writes. For example, the known
> put,delete,put,... scenario, cross region server scan, out of order puts(in
> recovery case).
> Current thinking is that we make the retention period configurable(below
> we're using 1 day to explain). During major compaction, we check hfile's
> creation time if a hfile creation time is older than 1 day then all mvcc of
> KVs in that hfile will be removed. If a hfile is created within 1 day, then
> all mvccs of KVs in that hfile will be kept.
> In case there are time clock skew, we can firstly sort hfiles based on its
> seqId in ascending order and find the first hfile's creation time stamp less
> than 1 day. Then mvcc of all hfiles before the found file will be removed
> during compaction.
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