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https://issues.apache.org/jira/browse/CASSANDRA-7354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14018607#comment-14018607
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Aleksey Yeschenko commented on CASSANDRA-7354:
----------------------------------------------
Apparently it's possible for meanRowSize to be 0 when meanColumnCount is not,
even though both only consider SSTables, and not the memtables, in a rare race
condition. Attaching a simple fix.
> Divide by zero in hinted handoff
> --------------------------------
>
> Key: CASSANDRA-7354
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7354
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: C* 2.0.8, x86-64 ubuntu 12.04
> Reporter: Duncan Sands
> Priority: Minor
> Attachments: 7354.txt
>
>
> Got this on a node shortly after upgrading it to 2.0.8. The other node went
> down and up (triggering the hinted handoff) because it was being migrated
> from 2.0.7 to 2.0.8.
> INFO [HintedHandoff:1] 2014-06-05 07:26:35,447 HintedHandOffManager.java
> (line 344) Started hinted handoff for host:
> b12e6d71-e189-4fe8-b00a-8ff2cc9848fd wit
> h IP: /192.168.60.137
> ERROR [HintedHandoff:1] 2014-06-05 07:26:35,448 CassandraDaemon.java (line
> 199) Exception in thread Thread[HintedHandoff:1,1,main]
> java.lang.ArithmeticException: / by zero
> at
> org.apache.cassandra.db.HintedHandOffManager.calculatePageSize(HintedHandOffManager.java:493)
> at
> org.apache.cassandra.db.HintedHandOffManager.doDeliverHintsToEndpoint(HintedHandOffManager.java:351)
> at
> org.apache.cassandra.db.HintedHandOffManager.deliverHintsToEndpoint(HintedHandOffManager.java:330)
> at
> org.apache.cassandra.db.HintedHandOffManager.access$300(HintedHandOffManager.java:91)
> at
> org.apache.cassandra.db.HintedHandOffManager$5.run(HintedHandOffManager.java:547)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
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