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https://issues.apache.org/jira/browse/TEZ-2256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14388713#comment-14388713
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Hitesh Shah commented on TEZ-2256:
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[~cchepelov] You are now in the contributors list so you should be able to 
assign jiras to yourself.

> Avoid use of BufferTooSmallException to signal end of buffer in 
> UnorderedPartitionedKVWriter
> --------------------------------------------------------------------------------------------
>
>                 Key: TEZ-2256
>                 URL: https://issues.apache.org/jira/browse/TEZ-2256
>             Project: Apache Tez
>          Issue Type: Improvement
>    Affects Versions: 0.6.0, 0.7.0
>            Reporter: Cyrille Chépélov
>            Assignee: Cyrille Chépélov
>            Priority: Minor
>   Original Estimate: 6h
>  Remaining Estimate: 6h
>
> UnorderedPartitionedKVWriter delegates serialization to the application, 
> passing it a private ByteArrayOutputStream. In case the buffer is exhausted, 
> ByteArrayOutputStream signals that with a private BufferTooSmallException, 
> which can be seen but not dealt with by the application. As [~cwensel] 
> pointed out, when the application is in fact a complex framework, there is no 
> way to distinguish this exception from a real failure, which compels logging 
> the full stack even for reasonable events such as "buffer complete".
> Suggested approach: set a "complete" flag in ByteArrayOutputStream that 
> disables any further output, and replace  BufferTooSmallException (BTSE) 
> handling by checking that flag. 
> [~sseth] suggested checking out SortedOutput as well, as the mechanisms there 
> should be similar.
> I'll give this a go this week.



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