Sergey Shelukhin created HIVE-20247:
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Summary: cleanup issues in LLAP IO after cache OOM
Key: HIVE-20247
URL: https://issues.apache.org/jira/browse/HIVE-20247
Project: Hive
Issue Type: Bug
Reporter: Prasanth Jayachandran
Assignee: Sergey Shelukhin
LLAP IO creates unallocated buffer objects inside the read-related data
structures, then allocates them in bulk, then decompresses into them and
increfs them.
If allocate or decompress steps fail, it's hard for the higher-level cleanup to
tell what the state of the buffers in the read-related structures is - they may
be unallocated, allocated but not incref-ed, or incref-ed.
Some cleanup paths only deal with the latter case, resulting in bugs.
This only happens on one paths, others allocate and use buffers in a single
place.
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