deniskuzZ commented on code in PR #4477:
URL: https://github.com/apache/hive/pull/4477#discussion_r1272015311
##########
ql/src/java/org/apache/hadoop/hive/ql/parse/GenTezUtils.java:
##########
@@ -86,6 +108,13 @@ public static ReduceWork createReduceWork(
float maxPartitionFactor =
context.conf.getFloatVar(HiveConf.ConfVars.TEZ_MAX_PARTITION_FACTOR);
+
+ if (context.parseContext.getContext().getOperation() ==
Context.Operation.DELETE &&
+ isRestrictReducerExtrapolation(context)) {
+ LOG.debug("Overriding maxPartitionFactor to 1.0 to prevent creation of
small files after delete operation");
+ maxPartitionFactor = 1f;
Review Comment:
I am not sure it's required for ACID tables as we have built-in compaction
support
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