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Hive, mail # dev - Review Request 14250: HIVE-4957: Restrict number of bit vectors, to prevent out of Java heap memory


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Review Request 14250: HIVE-4957: Restrict number of bit vectors, to prevent out of Java heap memory
Shreepadma Venugopalan 2013-09-20, 20:02

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https://reviews.apache.org/r/14250/
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Review request for hive and Brock Noland.
Bugs: HIVE-4957
    https://issues.apache.org/jira/browse/HIVE-4957
Repository: hive-git
Description
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Restricts the number of bit vectors used by Flajolet-Martin distinct value estimator to 1024.
Diffs
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  ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFComputeStats.java 63110bb
  ql/src/test/queries/clientnegative/compute_stats_long.q PRE-CREATION
  ql/src/test/results/clientnegative/compute_stats_long.q.out PRE-CREATION

Diff: https://reviews.apache.org/r/14250/diff/
Testing
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Adds a new negative test case.
Thanks,

Shreepadma Venugopalan