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https://issues.apache.org/jira/browse/HBASE-9931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836717#comment-13836717
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Dave Latham commented on HBASE-9931:
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The patch adds setBatch and removes setCaching. I think setCaching should
stay in there too - probably a copy/replace bug?
> Optional setBatch for CopyTable to copy large rows in batches
> -------------------------------------------------------------
>
> Key: HBASE-9931
> URL: https://issues.apache.org/jira/browse/HBASE-9931
> Project: HBase
> Issue Type: Improvement
> Components: mapreduce
> Reporter: Dave Latham
> Attachments: HBASE-9931.00.patch
>
>
> We've had CopyTable jobs fail because a small number of rows are wide enough
> to not fit into memory. If we could specify the batch size for CopyTable
> scans that shoud be able to break those large rows up into multiple
> iterations to save the heap.
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