[jira] [Created] (CASSANDRA-8609) Remove depency of hadoop to internals (Cell/CellName)

["Sylvain Lebresne (JIRA)" <ji...@apache.org>]

Sylvain Lebresne created CASSANDRA-8609:
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             Summary: Remove depency of hadoop to internals (Cell/CellName)
                 Key: CASSANDRA-8609
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8609
             Project: Cassandra
          Issue Type: Bug
            Reporter: Sylvain Lebresne
             Fix For: 3.0


For some reason most of the Hadoop code (ColumnFamilyRecordReader, CqlStorage, ...) uses the {{Cell}} and {{CellName}} classes. That dependency is entirely artificial: all this code is really client code that communicate with Cassandra over thrift/native protocol and there is thus no reason for it to use internal classes. And in fact, thoses classes are used in a very crude way, as a {{Pair<ByteBuffer, ByteBuffer>}} really.

But this dependency is really painful when we make changes to the internals. Further, every time we do so, I believe we break some of those the APIs due to the change. This has been painful for CASSANDRA-5417 and this is now painful for CASSANDRA-8099. But while I somewhat hack over it in CASSANDRA-5417, this was a mistake and we should have removed the depency back then. So let do that now.



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