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From "Pavel Yaskevich (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CASSANDRA-11434) Support EQ/PREFIX queries in CONTAINS mode without tokenization by augmenting SA metadata per term
Date Sun, 03 Apr 2016 07:30:25 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-11434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pavel Yaskevich resolved CASSANDRA-11434.
-----------------------------------------
    Resolution: Fixed

+1, Committed.

> 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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