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From "Daniel Blum (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-4420) Possible divide-by-zero exception when closing BatchWriter
Date Mon, 22 Aug 2016 20:43:20 GMT
Daniel Blum created ACCUMULO-4420:
-------------------------------------

             Summary: 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: 1.7.2, 1.6.5
            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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