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https://issues.apache.org/jira/browse/HBASE-4398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
stack resolved HBASE-4398.
--------------------------
Resolution: Fixed
Fix Version/s: 0.94.1
0.92.2
Assignee: Takuya Ueshin
Hadoop Flags: Reviewed
> If HRegionPartitioner is used in MapReduce, client side configurations are
> overwritten by hbase-site.xml.
> ---------------------------------------------------------------------------------------------------------
>
> Key: HBASE-4398
> URL: https://issues.apache.org/jira/browse/HBASE-4398
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 0.90.4
> Reporter: Takuya Ueshin
> Assignee: Takuya Ueshin
> Fix For: 0.92.2, 0.94.1
>
> Attachments: HBASE-4398.patch
>
>
> If HRegionPartitioner is used in MapReduce, client side configurations are
> overwritten by hbase-site.xml.
> We can reproduce the problem by the following instructions:
> {noformat}
> - Add HRegionPartitioner.class to the 4th argument of
> TableMapReduceUtil#initTableReducerJob()
> at line around 133
> in src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableMapReduce.java
> - Change or remove "hbase.zookeeper.property.clientPort" property
> in hbase-site.xml ( for example, changed to 12345 ).
> - run testMultiRegionTable()
> {noformat}
> Then I got error messages as following:
> {noformat}
> 2011-09-12 22:28:51,020 DEBUG [Thread-832] zookeeper.ZKUtil(93): hconnection
> opening connection to ZooKeeper with ensemble (localhost:12345)
> 2011-09-12 22:28:51,022 INFO [Thread-832]
> zookeeper.RecoverableZooKeeper(89): The identifier of this process is
> 43200@imac.local
> 2011-09-12 22:28:51,123 WARN [Thread-832]
> zookeeper.RecoverableZooKeeper(161): Possibly transient ZooKeeper exception:
> org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode
> = ConnectionLoss for /hbase/master
> 2011-09-12 22:28:51,123 INFO [Thread-832]
> zookeeper.RecoverableZooKeeper(173): The 1 times to retry ZooKeeper after
> sleeping 1000 ms
> =====
> 2011-09-12 22:29:02,418 ERROR [Thread-832] mapreduce.HRegionPartitioner(125):
> java.io.IOException:
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@2e54e48d
> closed
> 2011-09-12 22:29:02,422 WARN [Thread-832] mapred.LocalJobRunner$Job(256):
> job_local_0001
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.mapreduce.HRegionPartitioner.setConf(HRegionPartitioner.java:128)
> at
> org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:62)
> at
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
> at
> org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:527)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:613)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:177)
> {noformat}
> I think HTable should connect to ZooKeeper at port 21818 configured at client
> side instead of 12345 in hbase-site.xml
> and It might be caused by "HBaseConfiguration.addHbaseResources(conf);" in
> HRegionPartitioner#setConf(Configuration).
> And this might mean that all of client side configurations, also configured
> in hbase-site.xml, are overwritten caused by this problem.
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