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From Shangzhong zhu <>
Subject Map side join failed when setting hive.optimize.cp to false
Date Wed, 06 Aug 2014 01:14:46 GMT
Hive version 0.12.0

To enable Map side join, we enable:


set = true;
set = 128000000;

However, when we also set: hive.optimize.cp=false, Map side join will fail
with following error:

hadoop@node76-99:/mnt/szhu/queries$ hive -f test-mapjoin.q

Logging initialized using configuration in
Hive history
Total MapReduce jobs = 1
Execution log at: /tmp/hadoop/.log
2014-08-06 12:09:02    Starting to launch local task to process map
join;    maximum memory = 932118528
Execution failed with exit status: 2
Obtaining error information

Task failed!
Task ID:


FAILED: Execution Error, return code 2 from

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