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From "Zhihong Yu (Assigned) (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HBASE-5663) MultithreadedTableMapper doesn't work.
Date Sat, 31 Mar 2012 16:12:39 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhihong Yu reassigned HBASE-5663:
---------------------------------

    Assignee: Takuya Ueshin
    
> MultithreadedTableMapper doesn't work.
> --------------------------------------
>
>                 Key: HBASE-5663
>                 URL: https://issues.apache.org/jira/browse/HBASE-5663
>             Project: HBase
>          Issue Type: Bug
>          Components: mapreduce
>    Affects Versions: 0.94.0
>            Reporter: Takuya Ueshin
>            Assignee: Takuya Ueshin
>             Fix For: 0.94.0, 0.96.0
>
>         Attachments: 5663+5636.txt, HBASE-5663.patch
>
>
> MapReduce job using MultithreadedTableMapper goes down throwing the following Exception:
> {noformat}
> java.io.IOException: java.lang.NoSuchMethodException: org.apache.hadoop.mapreduce.Mapper$Context.<init>(org.apache.hadoop.conf.Configuration,
org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper$SubMapRecordReader,
org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper$SubMapRecordWriter, org.apache.hadoop.hbase.mapreduce.TableOutputCommitter,
org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper$SubMapStatusReporter, org.apache.hadoop.hbase.mapreduce.TableSplit)
> 	at org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper$MapRunner.<init>(MultithreadedTableMapper.java:260)
> 	at org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper.run(MultithreadedTableMapper.java:133)
> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
> 	at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:396)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1083)
> 	at org.apache.hadoop.mapred.Child.main(Child.java:249)
> Caused by: java.lang.NoSuchMethodException: org.apache.hadoop.mapreduce.Mapper$Context.<init>(org.apache.hadoop.conf.Configuration,
org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper$SubMapRecordReader,
org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper$SubMapRecordWriter, org.apache.hadoop.hbase.mapreduce.TableOutputCommitter,
org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper$SubMapStatusReporter, org.apache.hadoop.hbase.mapreduce.TableSplit)
> 	at java.lang.Class.getConstructor0(Class.java:2706)
> 	at java.lang.Class.getConstructor(Class.java:1657)
> 	at org.apache.hadoop.hbase.mapreduce.MultithreadedTableMapper$MapRunner.<init>(MultithreadedTableMapper.java:241)
> 	... 8 more
> {noformat}
> This occured when the tasks are creating MapRunner threads.

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