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https://issues.apache.org/jira/browse/HBASE-10349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13875546#comment-13875546
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Hudson commented on HBASE-10349:
--------------------------------
SUCCESS: Integrated in HBase-0.98 #94 (See
[https://builds.apache.org/job/HBase-0.98/94/])
HBASE-10349 Table became unusable when master balanced its region after table
was dropped (jxiang: rev 1559312)
*
/hbase/branches/0.98/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
*
/hbase/branches/0.98/hbase-server/src/main/java/org/apache/hadoop/hbase/master/RegionStates.java
*
/hbase/branches/0.98/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/DeleteTableHandler.java
*
/hbase/branches/0.98/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestAssignmentManager.java
*
/hbase/branches/0.98/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestAssignmentManagerOnCluster.java
> Table became unusable when master balanced its region after table was dropped
> -----------------------------------------------------------------------------
>
> Key: HBASE-10349
> URL: https://issues.apache.org/jira/browse/HBASE-10349
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.0
> Reporter: Ted Yu
> Assignee: Jimmy Xiang
> Fix For: 0.98.0, 0.96.2, 0.99.0
>
> Attachments:
> 10349-hadoop-hdfs-namenode-hor11n14.gq1.ygridcore.net.zip, 10349-output.log,
> 10349-v1.txt, 10349-v2.txt, HBASE-10349-meta-test-and-debug.patch,
> hbase-10349.patch, hbase-10349_v2.patch,
> hbase-hbase-master-hor15n05.gq1.ygridcore.net.log.tar.gz
>
>
> 0.98 was used.
> This was sequence of events:
> create 'tablethree_mod'
> snapshot 'tablethree_mod', 'snapshot_tablethree_mod'
> disable 'tablethree_mod'
> 2014-01-15 09:34:51,749 restore_snapshot 'snapshot_tablethree_mod'
> 2014-01-15 09:35:07,210 enable 'tablethree_mod'
> 2014-01-15 09:35:46,134 delete_snapshot 'snapshot_tablethree_mod'
> 2014-01-15 09:41:42,210 disable 'tablethree_mod'
> 2014-01-15 09:41:43,610 drop 'tablethree_mod'
> create 'tablethree_mod'
> For the last table creation request:
> {code}
> 2014-01-15 10:03:52,999|beaver.component.hbase|INFO| 'create 'tablethree_mod',
> {NAME => 'f1', VERSIONS => 3}
> ,
> {NAME => 'f2', VERSIONS => 3}
> ,
> {NAME => 'f3', VERSIONS => 3}
> '
> 2014-01-15 10:03:52,999|beaver.component.hbase|INFO| 'exists 'tablethree_mod''
> 2014-01-15 10:03:52,999|beaver.component.hbase|INFO| 'put 'tablethree_mod',
> '0', 'f1:q1', 'value-0', 10'
> 2014-01-15 10:03:52,999|beaver.component.hbase|INFO| 'put 'tablethree_mod',
> '1', 'f1:q1', 'value-1', 20'
> 2014-01-15 10:03:53,000|beaver.component.hbase|INFO| 'put 'tablethree_mod',
> '2', 'f2:q2', 'value-2', 30'
> 2014-01-15 10:03:53,000|beaver.component.hbase|INFO| 'put 'tablethree_mod',
> '3', 'f3:q3', 'value-3', 40'
> 2014-01-15 10:03:53,000|beaver.component.hbase|INFO| 'put 'tablethree_mod',
> '4', 'f3:q3', 'value-4', 50'
> 2014-01-15 10:03:53,000|beaver.component.hbase|INFO|Done writing commands to
> file. Will execute them now.
> 2014-01-15 10:03:53,000|beaver.machine|INFO|RUNNING: /usr/lib/hbase/bin/hbase
> shell /grid/0/tmp/hwqe/artifacts/tmp-471142
> 2014-01-15 10:03:55,878|beaver.machine|INFO|2014-01-15 10:03:55,878 INFO
> [main] Configuration.deprecation: hadoop.native.lib is deprecated. Instead,
> use io.native.lib.available
> 2014-01-15 10:03:57,283|beaver.machine|INFO|2014-01-15 10:03:57,283 WARN
> [main] conf.Configuration: hbase-site.xml:an attempt to override final
> parameter: dfs.support.append; Ignoring.
> 2014-01-15 10:03:57,669|beaver.machine|INFO|2014-01-15 10:03:57,669 WARN
> [main] conf.Configuration: hbase-site.xml:an attempt to override final
> parameter: dfs.support.append; Ignoring.
> 2014-01-15 10:03:57,720|beaver.machine|INFO|2014-01-15 10:03:57,720 WARN
> [main] conf.Configuration: hbase-site.xml:an attempt to override final
> parameter: dfs.support.append; Ignoring.
> 2014-01-15 10:03:57,997|beaver.machine|INFO|
> 2014-01-15 10:03:57,997|beaver.machine|INFO|ERROR: Table already exists:
> tablethree_mod!
> 2014-01-15 10:03:57,997|beaver.machine|INFO|
> {code}
> This was an intermittent issue after using Snapshots, a table is not properly
> dropped / and not able to properly re-create with the same name. And a
> HRegion is empty or null Error occurs. (When you try to drop the table it
> says it does not exist, and when you try to create the table it says that it
> does already exist).
> {code}
> 2014-01-15 10:04:02,462|beaver.machine|INFO|ERROR: HRegionInfo was null or
> empty in hbase:meta, row=keyvalues=
> {tablethree_mod,,1389778226606.afc82d1ceabbaca36a504b83b65fc0c9./info:seqnumDuringOpen/1389778905355/Put/vlen=8/mvcc=0,
>
> tablethree_mod,,1389778226606.afc82d1ceabbaca36a504b83b65fc0c9./info:server/1389778905355/Put/vlen=32/mvcc=0,
>
> tablethree_mod,,1389778226606.afc82d1ceabbaca36a504b83b65fc0c9./info:serverstartcode/1389778905355/Put/vlen=8/mvcc=0}
>
> {code}
> Thanks to Huned who discovered this issue.
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