Mikhail Bautin created HIVE-3809:
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Summary: Concurrency issue in RCFile: multiple threads can use the
same decompressor
Key: HIVE-3809
URL: https://issues.apache.org/jira/browse/HIVE-3809
Project: Hive
Issue Type: Bug
Reporter: Mikhail Bautin
Priority: Critical
RCFile is not thread-safe, even if each reader is only used by one thread as
intended, because it is possible to return decompressors to the pool multiple
times by calling close on the reader multiple times. Then, different threads
can pick up the same decompressor twice from the pool, resulting in
decompression failures.
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