no atomicity for a reader/writer for a job
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Key: HIVE-829
URL: https://issues.apache.org/jira/browse/HIVE-829
Project: Hadoop Hive
Issue Type: New Feature
Components: Query Processor
Reporter: Namit Jain
Hive currently does not provide any atomicity for a reader/writer.
So, if a reader/writer is running concurrently, the reader may randomly die or
even see partial results.
Some kind of synchronization mechanisms (lease, lock in metastore/somewhere
else) are needed to manage the above.
This also applies to multiple writers (say multiple load into...)
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