[jira] [Created] (HIVE-3911) udaf_percentile_approx.q fails with Hadoop 0.23.5 when map-side aggr is disabled.

["Thiruvel Thirumoolan (JIRA)" <ji...@apache.org>]

Thiruvel Thirumoolan created HIVE-3911:
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             Summary: udaf_percentile_approx.q fails with Hadoop 0.23.5 when map-side aggr is disabled.
                 Key: HIVE-3911
                 URL: https://issues.apache.org/jira/browse/HIVE-3911
             Project: Hive
          Issue Type: Bug
    Affects Versions: 0.10.0
            Reporter: Thiruvel Thirumoolan
             Fix For: 0.10.0, 0.11.0


I am running Hive10 unit tests against Hadoop 0.23.5 and udaf_percentile_approx.q fails with a different value when map-side aggr is disabled and only when 3rd argument to this UDAF is 100. Matches expected output when map-side aggr is enabled for the same arguments.

This test passes when hadoop.version is 1.1.1 and fails when its 0.23.x or 2.0.0-alpha or 2.0.2-alpha.

    [junit] 20c20
    [junit] < 254.08333333333331
    [junit] ---
    [junit] > 252.77777777777777
    [junit] 47c47
    [junit] < 254.08333333333331
    [junit] ---
    [junit] > 252.77777777777777
    [junit] 74c74
    [junit] < [23.355555555555558,254.08333333333331,477.0625,489.5466666666667]
    [junit] ---
    [junit] > [24.07,252.77777777777777,476.9444444444444,487.82]
    [junit] 101c101
    [junit] < [23.355555555555558,254.08333333333331,477.0625,489.5466666666667]
    [junit] ---
    [junit] > [24.07,252.77777777777777,476.9444444444444,487.82]

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