[HIVE-19392] unsynchronized index causes DataInputByteBuffer$Buffer.read hangs - ASF JIRA

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Details

Type: Bug
Status: Open
Priority: Minor
Resolution: Unresolved
Affects Version/s: 1.0.0
Fix Version/s: None
Component/s: SQL
Labels:
None

Description

In DataInputByteBuffer$Buffer class, the fields bidx and buffers, etc are unsynchronized when used in read() and reset() function. In certain circumstances, e.g., the reset() is invoked in a loop, the unsynchronized bidx and buffers can trigger a concurrency bug.
This bug also shows in Hadoop-15429.