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Posted to commits@cassandra.apache.org by "Pavel Yaskevich (JIRA)" <ji...@apache.org> on 2016/03/25 10:05:25 UTC

[jira] [Created] (CASSANDRA-11434) Support EQ/PREFIX queries in CONTAINS mode without tokenization by augmenting SA metadata per term

Pavel Yaskevich created CASSANDRA-11434:
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             Summary: Support EQ/PREFIX queries in CONTAINS mode without tokenization by augmenting SA metadata per term
                 Key: CASSANDRA-11434
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11434
             Project: Cassandra
          Issue Type: Improvement
          Components: sasi
            Reporter: Pavel Yaskevich
            Assignee: Jordan West
             Fix For: 3.6


We can support EQ/PREFIX requests to CONTAINS indexes by tracking "partiality" of the data stored in the OnDiskIndex and IndexMemtable, if we know exactly if current match represents part of the term or it's original form it would be trivial to support EQ/PREFIX since PREFIX is subset of SUFFIX matches.

Since we attach uint16 size to each term stored we can take advantage of sign bit so size of the index is not impacted at all.



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