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https://issues.apache.org/jira/browse/CASSANDRA-4730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-4730.
---------------------------------------

    Resolution: Not A Problem

# there is no action you can take to mitigate given that the commitlog entry is 
probably not readable in the first place
# checksum mismatch is not even a reliable indicator of unclean shutdown

Thus, there is no reason to surface this information.
                
> CommitLogReplayer should report the bad CRC checksum in the log
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-4730
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4730
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.5
>         Environment: Cassandra 1.1.5
>            Reporter: Arya Goudarzi
>
> If commit log isn't fully fsynced, the record which fails the checksum is not 
> replayed do this logic. It would be beneficial to log that as an error so 
> that user can know easily what happened.
> "./src/java/org/apache/cassandra/db/commitlog/CommitLogReplayer.java" line 
> 188 of 287 --65%-- col 54

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