Prasanth Jayachandran created HIVE-20649:
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Summary: LLAP aware memory manager for Orc writers
Key: HIVE-20649
URL: https://issues.apache.org/jira/browse/HIVE-20649
Project: Hive
Issue Type: Bug
Affects Versions: 4.0.0, 3.2.0
Reporter: Prasanth Jayachandran
Assignee: Prasanth Jayachandran
ORC writer has its own memory manager that assumes memory usage or memory
available based on JVM heap (MemoryMX bean). This works on tez container mode
execution model but not in LLAP where container sizes (and Xmx) are typically
high and there are multiple executors per LLAP daemon. This custom memory
manager should be aware of memory bounds per executor.
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