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https://issues.apache.org/jira/browse/HBASE-7403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13604126#comment-13604126
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Hadoop QA commented on HBASE-7403:
----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12573993/hbase-7403-trunkv23.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 15 new
or modified tests.
{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:red}-1 lineLengths{color}. The patch introduces lines longer than
100
{color:red}-1 site{color}. The patch appears to cause mvn site goal to
fail.
{color:green}+1 core tests{color}. The patch passed unit tests in .
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/4846//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/4846//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/4846//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/4846//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/4846//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/4846//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/4846//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings:
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Findbugs warnings:
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Console output:
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This message is automatically generated.
> Online Merge
> ------------
>
> Key: HBASE-7403
> URL: https://issues.apache.org/jira/browse/HBASE-7403
> Project: HBase
> Issue Type: New Feature
> Affects Versions: 0.95.0
> Reporter: chunhui shen
> Assignee: chunhui shen
> Priority: Critical
> Fix For: 0.95.0, 0.98.0
>
> Attachments: 7403-trunkv5.patch, 7403-trunkv6.patch, 7403v5.diff,
> 7403-v5.txt, 7403v5.txt, hbase-7403-94v1.patch, hbase-7403-trunkv10.patch,
> hbase-7403-trunkv11.patch, hbase-7403-trunkv12.patch,
> hbase-7403-trunkv13.patch, hbase-7403-trunkv14.patch,
> hbase-7403-trunkv15.patch, hbase-7403-trunkv16.patch,
> hbase-7403-trunkv19.patch, hbase-7403-trunkv1.patch,
> hbase-7403-trunkv20.patch, hbase-7403-trunkv22.patch,
> hbase-7403-trunkv23.patch, hbase-7403-trunkv5.patch,
> hbase-7403-trunkv6.patch, hbase-7403-trunkv7.patch, hbase-7403-trunkv8.patch,
> hbase-7403-trunkv9.patch, merge region.pdf
>
>
> Support executing region merge transaction on Regionserver, similar with
> split transaction
> Process of merging two regions:
> a.client send RPC(dispacth merging regions) to master
> b.master move the regions together (on the same regionserver)
> c.master send RPC(merge regions) to regionserver
> d.Regionserver execute the regions merge transaction in the thread pool
> e.the above b,c,d run asynchronously
> Process of region merge transaction:
> a.Construct a new region merge transaction.
> b.prepare for the merge transaction, the transaction will be canceled if it
> is unavailable,
> e.g. two regions don't belong to same table; two regions are not adjacent in
> a non-compulsory merge; region is closed or has reference
> c.execute the transaction as the following:
> /**
> * Set region as in transition, set it into MERGING state.
> */
> SET_MERGING_IN_ZK,
> /**
> * We created the temporary merge data directory.
> */
> CREATED_MERGE_DIR,
> /**
> * Closed the merging region A.
> */
> CLOSED_REGION_A,
> /**
> * The merging region A has been taken out of the server's online regions
> list.
> */
> OFFLINED_REGION_A,
> /**
> * Closed the merging region B.
> */
> CLOSED_REGION_B,
> /**
> * The merging region B has been taken out of the server's online regions
> list.
> */
> OFFLINED_REGION_B,
> /**
> * Started in on creation of the merged region.
> */
> STARTED_MERGED_REGION_CREATION,
> /**
> * Point of no return. If we got here, then transaction is not recoverable
> * other than by crashing out the regionserver.
> */
> PONR
> d.roll back if step c throws exception
> Usage:
> HBaseAdmin#mergeRegions
> See more details from the patch
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