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https://issues.apache.org/jira/browse/PHOENIX-2649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15131080#comment-15131080
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Gabriel Reid commented on PHOENIX-2649:
---------------------------------------

FWIW, I agree with just using the BytesWritable comparator as 
[~sergey.soldatov] suggested.

[~maghamraviki...@gmail.com] not a bad thing to implement hashCode of course, 
although I think that it's not specifically necessary here because the 
TotalOrderPartitioner is used for partitioning (and not the hash partitioner).

> GC/OOM during BulkLoad
> ----------------------
>
>                 Key: PHOENIX-2649
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2649
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.7.0
>         Environment: Mac OS, Hadoop 2.7.2, HBase 1.1.2
>            Reporter: Sergey Soldatov
>            Priority: Critical
>         Attachments: PHOENIX-2649.patch
>
>
> Phoenix fails to complete  bulk load of 40Mb csv data with GC heap error 
> during Reduce phase. The problem is in the comparator for TableRowkeyPair. It 
> expects that the serialized value was written using zero-compressed encoding, 
> but at least in my case it was written in regular way. So, trying to obtain 
> length for table name and row key it always get zero and reports that those 
> byte arrays are equal. As the result, the reducer receives all data produced 
> by mappers in one reduce call and fails with OOM. 



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