Yu-Wen Lai created HIVE-26419:
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Summary: Use a different pool for DataNucleus' secondary
connection factory
Key: HIVE-26419
URL: https://issues.apache.org/jira/browse/HIVE-26419
Project: Hive
Issue Type: Bug
Components: Standalone Metastore
Reporter: Yu-Wen Lai
Assignee: Yu-Wen Lai
Quote from DataNucleus documentation:
{quote}The secondary connection factory is used for schema generation, and for
value generation operations (unless specified to use primary).
{quote}
We should not use same connection pool for DataNucleus' primary and secondary
connection factory. An awful situation is that each thread holds one connection
and request for another connection for value generation, but no connection is
available in the pool. It will keep retrying and fail at the end.
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