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https://issues.apache.org/jira/browse/KYLIN-2493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15904227#comment-15904227
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XIE FAN commented on KYLIN-2493:
--------------------------------
Sorry, I will make it more clear
> BufferOverflowException in FactDistinctColumnsMapper when a value is very long
> ------------------------------------------------------------------------------
>
> Key: KYLIN-2493
> URL: https://issues.apache.org/jira/browse/KYLIN-2493
> Project: Kylin
> Issue Type: Bug
> Reporter: XIE FAN
> Assignee: XIE FAN
>
> error stack:
> Error: java.nio.BufferOverflowException at
> java.nio.HeapByteBuffer.put(HeapByteBuffer.java:183) at
> java.nio.ByteBuffer.put(ByteBuffer.java:832) at
> org.apache.kylin.engine.mr.steps.FactDistinctColumnsMapper.doMap(FactDistinctColumnsMapper.java:157)
> at org.apache.kylin.engine.mr.KylinMapper.map(KylinMapper.java:48) at
> org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:145) at
> org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764) at
> org.apache.hadoop.mapred.MapTask.run(MapTask.java:340) at
> org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167) at
> java.security.AccessController.doPrivileged(Native Method) at
> javax.security.auth.Subject.doAs(Subject.java:415) at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1556)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
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