Details
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Improvement
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Status: Closed
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Trivial
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Resolution: Fixed
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None
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None
Description
When establishing HiveSession, it ends up configuring session variables/settings.
As part of it, it ends up checking the database details. https://github.com/apache/hive/blob/master/service/src/java/org/apache/hive/service/cli/session/HiveSessionImpl.java#L314
Even if it is `default` DB, it ends up making this check. In corner cases, these calls turn out to be expensive.
2019-08-13T03:16:57,189 INFO [b42ba57f-1740-4174-855d-4e3f08319ca5 HiveServer2-Handler-Pool: Thread-1552313] metadata.Hive: Total time spent in this metastore function was greater than 1000ms : getDatabase_(String, )=13265
We can just skip this check if its `DEFAULT_DATABASE_NAME` (default) DB. This may not be an issue for CachedStore.