Wechar created HIVE-27097:
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Summary: Improve the retry strategy for Metastore client and server
Key: HIVE-27097
URL: https://issues.apache.org/jira/browse/HIVE-27097
Project: Hive
Issue Type: Improvement
Components: Hive
Affects Versions: 4.0.0-alpha-2
Reporter: Wechar
Assignee: Wechar
*Background*
Hive provides *{{RetryingMetaStoreClient}}* and *{{RetryingHMSHandler}}* to do
retry when thrift request failed:
* RetryingMetaStoreClient will retry for *thrift related exception* and some
*MetaException*
* RetryingHMSHandler will retry for all *JDOException*.
*Motivation*
Current retry mechanism will lead to many unnecessary retries in both client
and server. To simplify the process, we introduce following retry mechanism:
* Client side only concerns the error of communication, i.e.,
*TTransportException*.
* Server side can skip some exceptions which always turn to fail even with
retry, like *SQLIntegrityConstraintViolationException*.
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