[SPARK-13958] Executor OOM due to unbounded growth of pointer array in Sorter

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.1
• Fix Version/s: 1.6.2, 2.0.0
• Component/s: Shuffle, Spark Core
• Assignee: Sital Kedia
• Reporter: Sital Kedia
• Created: 17/Mar/16 05:37
• Updated: 19/Mar/16 14:57
• Resolved: 18/Mar/16 19:56

Description

While running a job we saw that the executors are OOMing because in UnsafeExternalSorter's growPointerArrayIfNecessary function, we are just growing the pointer array indefinitely.

https://github.com/apache/spark/blob/master/core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeExternalSorter.java#L292

This is a regression introduced in PR- https://github.com/apache/spark/pull/11095

Issue Links

• links to: [Github] Pull Request #11794 (sitalkedia)