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Ben Holloway commented on CASSANDRA-5504: ----------------------------------------- still not working for me. I can't really tell what is going on due to the magic thrift import line bq. import org.apache.cassandra.thrift.*; > 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: 1.2.3 > Reporter: Oleksandr Petrov > Priority: Critical > Attachments: 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