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https://issues.apache.org/jira/browse/HBASE-19169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16258307#comment-16258307
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Ted Yu commented on HBASE-19169:
--------------------------------

Possibly related to the presence of hbase 1.2.6 jars (from ATS v2) in 
mapreduce.tar.gz

> Rowcounter job fails against hadoop3 beta1
> ------------------------------------------
>
>                 Key: HBASE-19169
>                 URL: https://issues.apache.org/jira/browse/HBASE-19169
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>
> I got the following error running rowcounter against hadoop3 beta1 based on 
> commit a9f0c5d4e2c85c1faae1b4b277e3c290c8b81d2a :
> {code}
> 2017-11-03 17:10:59,583 INFO  [main] mapreduce.Job: Task Id : 
> attempt_1509641483571_0006_m_000029_1, Status : FAILED
> Error: java.lang.ArrayIndexOutOfBoundsException: 2
>       at 
> org.apache.hadoop.hbase.mapreduce.TableSplit$Version.fromCode(TableSplit.java:77)
>       at 
> org.apache.hadoop.hbase.mapreduce.TableSplit.readFields(TableSplit.java:285)
>       at 
> org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:71)
>       at 
> org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:42)
>       at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:372)
>       at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:760)
>       at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
>       at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:174)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:422)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1962)
>       at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168)
> {code}



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