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https://issues.apache.org/jira/browse/CASSANDRA-4593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13445432#comment-13445432
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Ben Frank commented on CASSANDRA-4593:
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Fair enough, I was just doing a byteBuffer.getLong() which I know resets the
position but I didn't really consider it destructive. I can't believe I'll be
the only person caught out by this, is there some documentation I've missed, or
a relevant wiki page I should update with this information?
> Reading the ByteBuffer key from a map job causes an infinite fetch loop
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-4593
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4593
> Project: Cassandra
> Issue Type: Bug
> Components: Hadoop
> Affects Versions: 1.1.2
> Reporter: Ben Frank
> Attachments: cassandra-1.1-4593.txt
>
>
> Reading the ByteBuffer key from a map job empties the buffer. One of these
> key buffers is later used in ColumnFamilyRecordReader to figure out the last
> token that was received, then using that as a start point to fetch more rows.
> With a now empty buffer, the token defaults to the start of the range and
> thus the end of the data is never reached.
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