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https://issues.apache.org/jira/browse/HBASE-2101?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-2101:
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Attachment: 2102.patch
> KeyValueSortReducer collapses all values to last passed
> -------------------------------------------------------
>
> Key: HBASE-2101
> URL: https://issues.apache.org/jira/browse/HBASE-2101
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Fix For: 0.20.3, 0.20.4, 0.21.0
>
> Attachments: 2102.patch
>
>
> From mailing list by Ioannis Konstantinou:
> {code}The problem is in the class
> org.apache.hadoop.hbase.mapreduce.KeyValueSortReducer.
> When you add keyvalues to the treeset for sorting, you need to add keyvalue
> clones instead of just references. What happens now, is that in every
> iteration, the value that exists in the treeset gets replaced with the new
> value.
> So, you need to replace line 41 ( map.add(kv);)
> with this line: map.add(kv.clone())
> in this case, the treeset populates correcty.{code}
> I filed this against 0.20.3 so if we have to cut a new RC, we can include
> this fix too.
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