[jira] [Updated] (HBASE-9747) PrefixFilter with OR condition gives wrong results

["Aditya Kishore (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-9747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aditya Kishore updated HBASE-9747:
----------------------------------

    Attachment: HBASE-9747_0.94.patch

Upon closer inspection, it does return erroneous result if both the filters are combined with OR.

The problem is in the {{PrefixFilter}} filter class which does not maintain the fact that it had filtered out a row in {{filterRowKey()}} function and respond with this knowledge {{filterRow()}} (which it inherits from {{FilterBase}} class).

The attached patch should resolve the issue.

> PrefixFilter with OR condition gives wrong results
> --------------------------------------------------
>
>                 Key: HBASE-9747
>                 URL: https://issues.apache.org/jira/browse/HBASE-9747
>             Project: HBase
>          Issue Type: Bug
>          Components: Filters
>    Affects Versions: 0.94.9
>            Reporter: Deepa Remesh
>            Assignee: Aditya Kishore
>         Attachments: HBASE-9747_0.94.patch
>
>
> PrefixFilter when used with a SingleColumnValueFilter with an OR condition gives wrong results. In below example, each filter when evaluated separately gives 1 row each. The OR condition with the two filters gives 3 rows instead of 2. Repro below:
> create 't1', 'f1'
> put 't1','a1','f1:q2','111'
> put 't1','b1','f1:q1','112'
> put 't1','c1','f1:q1','113'
> hbase(main):020:0> scan 't1', {FILTER => "PrefixFilter ('b') OR SingleColumnValueFilter('f1', 'q1', =, 'binary:113')"}
> ROW                                                COLUMN+CELL
>  a1                                                column=f1:q2, timestamp=1381468905492, value=111
>  b1                                                column=f1:q1, timestamp=1381468905518, value=112
>  c1                                                column=f1:q1, timestamp=1381468905549, value=113
> 3 row(s) in 0.1020 seconds
> hbase(main):021:0> scan 't1', {FILTER => "PrefixFilter ('b')"}
> ROW                                                COLUMN+CELL
>  b1                                                column=f1:q1, timestamp=1381468905518, value=112
> 1 row(s) in 0.0150 seconds
> hbase(main):002:0> scan 't1', {FILTER => "SingleColumnValueFilter('f1', 'q1', =, 'binary:113')"}
> ROW                                                COLUMN+CELL
>  c1                                                column=f1:q1, timestamp=1381469178679, value=113
> 1 row(s) in 0.0140 seconds



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