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https://issues.apache.org/jira/browse/HBASE-10782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13941357#comment-13941357
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Liang Xie commented on HBASE-10782:
-----------------------------------
Integreated into trunk and 0.94/0.96/0.98 branches. Thanks [~liushaohui] for
your finding and patch! Thanks all for review.
> Hadoop2 MR tests fail occasionally because of mapreduce.jobhistory.address is
> no set in job conf
> ------------------------------------------------------------------------------------------------
>
> Key: HBASE-10782
> URL: https://issues.apache.org/jira/browse/HBASE-10782
> Project: HBase
> Issue Type: Test
> Reporter: Liu Shaohui
> Assignee: Liu Shaohui
> Priority: Minor
> Fix For: 0.96.2, 0.99.0, 0.94.18, 0.98.2
>
> Attachments: HBASE-10782-trunk-v1.diff
>
>
> Hadoop2 MR tests fail occasionally with output like this:
> {code}
> -------------------------------------------------------------------------------
> Test set: org.apache.hadoop.hbase.mapreduce.TestTableInputFormatScan1
> -------------------------------------------------------------------------------
> Tests run: 5, Failures: 0, Errors: 5, Skipped: 0, Time elapsed: 347.57 sec
> <<< FAILURE!
> testScanEmptyToAPP(org.apache.hadoop.hbase.mapreduce.TestTableInputFormatScan1)
> Time elapsed: 50.047 sec <<< ERROR!
> java.io.IOException: java.net.ConnectException: Call From
> liushaohui-OptiPlex-990/127.0.0.1 to 0.0.0.0:10020 failed on connection
> exception: java.net.ConnectException: Connection refused; For more details
> see: http://wiki.apache.org/hadoop/ConnectionRefused
> at
> org.apache.hadoop.mapred.ClientServiceDelegate.invoke(ClientServiceDelegate.java:334)
> at
> org.apache.hadoop.mapred.ClientServiceDelegate.getJobStatus(ClientServiceDelegate.java:419)
> at org.apache.hadoop.mapred.YARNRunner.getJobStatus(YARNRunner.java:524)
> at org.apache.hadoop.mapreduce.Job$1.run(Job.java:314)
> at org.apache.hadoop.mapreduce.Job$1.run(Job.java:311)
> at java.security.AccessController.doPrivileged(Native Method)
> ...
> {code}
> The reason is that when MR job was running, the job client pulled the job
> status from AppMaster. When the job is completed, the AppMaster will exit. At
> this time, if the job client have not got the job completed event from
> AppMaster, it will switch to get job report from history server.
> But in HBaseTestingUtility#startMiniMapReduceCluster, the config:
> mapreduce.jobhistory.address is not copied to TestUtil's config.
>
> CRUNCH-249 reported the same problem.
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