[
https://issues.apache.org/jira/browse/CASSANDRA-5504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jonathan Ellis updated CASSANDRA-5504:
--------------------------------------
Priority: Minor (was: Critical)
Affects Version/s: (was: 1.2.3)
1.2.0
Fix Version/s: 1.2.5
While investigating whether this was also a problem in 1.1, I found that this
was fixed for 1.1.7 in CASSANDRA-4834, with the same .duplicate() solution, but
not merged forward. I've applied this fix to the 1.2 branch.
> Eternal iteration when using newer hadoop version due to next() call and
> empty key value
> ----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-5504
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5504
> Project: Cassandra
> Issue Type: Bug
> Components: Hadoop
> Affects Versions: 1.2.0
> Reporter: Oleksandr Petrov
> Priority: Minor
> Fix For: 1.2.5
>
> Attachments: 5504-v3.txt, patch2.diff, patch.diff
>
>
> Currently, when using newer hadoop versions, due to the call to
> next(ByteBuffer key, SortedMap<ByteBuffer, IColumn> value)
> within ColumnFamilyRecordReader, because `key.clear();` is called, key is
> emptied. That causes the StaticRowIterator and WideRowIterator to glitch,
> namely, when Iterables.getLast(rows).key is called, key is already empty.
> This will cause Hadoop to request the same range again and again all the time.
> Please see the attached patch/diff, it simply adds lastRowKey (ByteBuffer)
> and saves it for the next iteration along with all the rows, this allows
> query for the next range to be fully correct.
> This patch is branched from 1.2.3 version.
> Tested against Cassandra 1.2.3, with Hadoop 1.0.3, 1.0.4 and 0.20.2
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
