Jason Gustafson created KAFKA-6030:
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             Summary: Integer overflow in log cleaner cleanable ratio 
computation
                 Key: KAFKA-6030
                 URL: https://issues.apache.org/jira/browse/KAFKA-6030
             Project: Kafka
          Issue Type: Bug
            Reporter: Jason Gustafson
             Fix For: 1.0.0, 0.11.0.2


In {{LogCleaner.LogToClean}}, the following computations, which are used to 
compute the cleanable ratio, can overflow since the segment size is an integer.
{code}
  val cleanBytes = log.logSegments(-1, firstDirtyOffset).map(_.size).sum
  ...
  val cleanableBytes = log.logSegments(firstDirtyOffset, 
math.max(firstDirtyOffset, firstUncleanableOffset)).map(_.size).sum
{code}

A PR is already available: https://github.com/apache/kafka/pull/4043.



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