srowen commented on a change in pull request #23645: [SPARK-26725][TEST] Fix
the input values of UnifiedMemoryManager constructor in test suites
URL: https://github.com/apache/spark/pull/23645#discussion_r251020680
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala
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@@ -97,7 +97,7 @@ private[execution] object HashedRelation {
new UnifiedMemoryManager(
new SparkConf().set(MEMORY_OFFHEAP_ENABLED.key, "false"),
Long.MaxValue,
- Long.MaxValue,
+ Long.MaxValue / 2,
Review comment:
That's fine by me. I presume it's not strictly an error to specify 0
execution memory, but also can't think of a situation where it's valid.
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