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From Marta Kuczora <kuczo...@cloudera.com>
Subject Review Request 54065: HIVE-15282: Different modification times are used when an index is built and when its staleness is checked
Date Thu, 24 Nov 2016 15:17:22 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/54065/
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Review request for hive, Aihua Xu, Peter Vary, and Sergio Pena.


Bugs: HIVE-15282
    https://issues.apache.org/jira/browse/HIVE-15282


Repository: hive-git


Description
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Changed the way how the modification time is determined for partitions in the DDLTask.alterIndex
method to be the same as when the index staleness is checked. Instead of using the modification
date of the partition folder, go through the files in the folder and use the highest modification
time and save it as index property. With this we can avoid the issue when the folder and the
file is created when the second turns. So the modification time of the folder is in the previous
second compared to the modification time of the file.
If the partition folder doesn't contain any files, then use the folder's modification time,
just as before.


Diffs
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  ql/src/java/org/apache/hadoop/hive/ql/exec/DDLTask.java cfece77 

Diff: https://reviews.apache.org/r/54065/diff/


Testing
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Ran the index_auto_mult_tables_compact and index_auto_mult_tables q tests multiple times,
with hard-coded delay with which the test failure described in HIVE-15282 could be reproduced.
With the patch, the tests were always successful.
Also ran all index related q tests.


Thanks,

Marta Kuczora


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