zabetak commented on code in PR #4101:
URL: https://github.com/apache/hive/pull/4101#discussion_r1144598686
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common/src/java/org/apache/hadoop/hive/conf/HiveConf.java:
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@@ -2366,8 +2366,11 @@ public static enum ConfVars {
"Whether Hive enables the optimization about converting common join
into mapjoin based on the input file size. \n" +
"If this parameter is on, and the sum of size for n-1 of the
tables/partitions for a n-way join is smaller than the\n" +
"specified size, the join is directly converted to a mapjoin (there is
no conditional task)."),
- HIVE_CONVERT_ANTI_JOIN("hive.auto.convert.anti.join", true,
- "Whether Hive enables the optimization about converting join with null
filter to anti join"),
+ HIVE_CONVERT_ANTI_JOIN("hive.auto.convert.anti.join", false,
+ "Whether Hive enables the optimization about converting join with null
filter to anti join. The " +
+ "default is currently false because of HIVE-25669. There is the
possibility of incorrect results. " +
Review Comment:
@scarlin-cloudera I suppose here you meant to point to HIVE-26659 (not
HIVE-25669).
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