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Posted to issues@hbase.apache.org by "Hudson (Commented) (JIRA)" <ji...@apache.org> on 2012/03/13 19:18:38 UTC
[jira] [Commented] (HBASE-5179) Concurrent processing of
processFaileOver and ServerShutdownHandler may cause region to be assigned
before log splitting is completed, causing data loss
[ https://issues.apache.org/jira/browse/HBASE-5179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228558#comment-13228558 ]
Hudson commented on HBASE-5179:
-------------------------------
Integrated in HBase-0.94 #30 (See [https://builds.apache.org/job/HBase-0.94/30/])
HBASE-5179 Handle potential data loss due to concurrent processing of processFaileOver and ServerShutdownHandler (Revision 1300222)
Result = SUCCESS
stack :
Files :
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/master/MasterServices.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/master/handler/CreateTableHandler.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/master/TestAssignmentManager.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/master/TestCatalogJanitor.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestRSKilledWhenMasterInitializing.java
> Concurrent processing of processFaileOver and ServerShutdownHandler may cause region to be assigned before log splitting is completed, causing data loss
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-5179
> URL: https://issues.apache.org/jira/browse/HBASE-5179
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.2
> Reporter: chunhui shen
> Assignee: chunhui shen
> Priority: Critical
> Fix For: 0.92.2
>
> Attachments: 5179-90.txt, 5179-90v10.patch, 5179-90v11.patch, 5179-90v12.patch, 5179-90v13.txt, 5179-90v14.patch, 5179-90v15.patch, 5179-90v16.patch, 5179-90v17.txt, 5179-90v18.txt, 5179-90v2.patch, 5179-90v3.patch, 5179-90v4.patch, 5179-90v5.patch, 5179-90v6.patch, 5179-90v7.patch, 5179-90v8.patch, 5179-90v9.patch, 5179-92v17.patch, 5179-v11-92.txt, 5179-v11.txt, 5179-v2.txt, 5179-v3.txt, 5179-v4.txt, Errorlog, hbase-5179.patch, hbase-5179v10.patch, hbase-5179v12.patch, hbase-5179v17.patch, hbase-5179v5.patch, hbase-5179v6.patch, hbase-5179v7.patch, hbase-5179v8.patch, hbase-5179v9.patch
>
>
> If master's processing its failover and ServerShutdownHandler's processing happen concurrently, it may appear following case.
> 1.master completed splitLogAfterStartup()
> 2.RegionserverA restarts, and ServerShutdownHandler is processing.
> 3.master starts to rebuildUserRegions, and RegionserverA is considered as dead server.
> 4.master starts to assign regions of RegionserverA because it is a dead server by step3.
> However, when doing step4(assigning region), ServerShutdownHandler may be doing split log, Therefore, it may cause data loss.
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