Kevin Wilfong created HIVE-4090:
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Summary: Use of hive.exec.script.allow.partial.consumption can
produce partial results
Key: HIVE-4090
URL: https://issues.apache.org/jira/browse/HIVE-4090
Project: Hive
Issue Type: Bug
Components: Query Processor
Affects Versions: 0.11.0
Reporter: Kevin Wilfong
When users execute use a transform script with the config
hive.exec.script.allow.partial.consumption set to true, it may produce partial
results.
When this config is set the script may close it's input pipe before its parent
operator has finished passing it rows. In the catch block for this exception,
the setDone method is called marking the operator as done. However, there's a
separate thread running to process rows passed from the script back to Hive via
stdout. If this thread is not done processing rows, any rows it forwards after
the setDone method is called will not be passed to its children. This leads to
partial results.
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