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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-4420) Possible divide-by-zero exception when closing BatchWriter
Date Tue, 23 Aug 2016 02:21:20 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-4420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15431999#comment-15431999
] 

Josh Elser commented on ACCUMULO-4420:
--------------------------------------

Thanks, Dan!

> Possible divide-by-zero exception when closing BatchWriter
> ----------------------------------------------------------
>
>                 Key: ACCUMULO-4420
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4420
>             Project: Accumulo
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.6.5, 1.7.2
>            Reporter: Daniel Blum
>            Priority: Minor
>
> TabletServerBatchWriter.logStats will throw a divide-by-zero exception if numBatches
is 0 (i.e., no batches have been written).
> There are actually no checks for 0 divisors anywhere in the method, so other such exceptions
are possible, as are lesser issues ("Average send rate" and some other stats come out as NaN
when no batches have been written, for example).



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