ngsg commented on code in PR #5707:
URL: https://github.com/apache/hive/pull/5707#discussion_r2006797427
##########
ql/src/java/org/apache/hadoop/hive/ql/optimizer/ConvertJoinMapJoin.java:
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@@ -701,6 +701,8 @@ private boolean convertJoinBucketMapJoin(JoinOperator
joinOp, OptimizeTezProcCon
}
MapJoinDesc joinDesc = mapJoinOp.getConf();
joinDesc.setBucketMapJoin(true);
+ // Disabling TEZ_AUTO_REDUCER_PARALLELISM until TEZ-4603 is fixed.
+ context.conf.setBoolVar(ConfVars.TEZ_AUTO_REDUCER_PARALLELISM, false);
Review Comment:
I verified that this `Configuration` object comes from `QueryState`, which
utilizes an isolated `Configuration`. Therefore, I think your code is safe and
valid.
cf.
https://github.com/apache/hive/blob/2d528556b69c1ec011e83f69d2a2fdcfb78b356e/ql/src/java/org/apache/hadoop/hive/ql/QueryState.java#L346-L355
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