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From "Kevin Wilfong" <>
Subject Review Request: Make performance logging configurable.
Date Wed, 10 Aug 2011 00:14:37 GMT

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Review request for hive and Ning Zhang.


I created a new class PerfLogger, which wraps the old functionality of Utilities' PerfLogBegin
and PerfLogBegin methods.  I also added a config variable hive.exec.perf.logger.  The value
of this variable can be changed to point to a subclass of PerfLogger which can customize the
code in PerfLogBegin and PerfLogEnd.

This addresses bug HIVE-2364.


  trunk/common/src/java/org/apache/hadoop/hive/conf/ 1155439 
  trunk/conf/hive-default.xml 1155439 
  trunk/ql/src/java/org/apache/hadoop/hive/ql/ 1155439 
  trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/ 1155439 
  trunk/ql/src/java/org/apache/hadoop/hive/ql/log/ PRE-CREATION 
  trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/ppr/ 1155439 



I ran the code as it is and made sure it continued to log the performance messages as before.

I also created a subclass of PerfLogger and used its class name as the value of hive.exec.perf.logger,
and verified the subclass's code was run.



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