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https://issues.apache.org/jira/browse/HBASE-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Doğacan Güney updated HBASE-1644:
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Attachment: rownull.patch
Patch for the problem.
Also TableInputFormatBase#nextKeyValue reads Result into a temporary result
variable then copies it into value field. AFAICS, there is no point in doing
that. So this patch also removes the local result variable.
> Result.row is cached in getRow; this breaks MapReduce
> -----------------------------------------------------
>
> Key: HBASE-1644
> URL: https://issues.apache.org/jira/browse/HBASE-1644
> Project: Hadoop HBase
> Issue Type: Bug
> Affects Versions: 0.20.0
> Reporter: Doğacan Güney
> Attachments: rownull.patch
>
>
> In Result#getRow row field is computed (if row is null) and then is cached
> for further uses. But since MapReduce uses the same Result instance through
> different map()/reduce() calls, row field is not updated when Result instance
> changes.
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