Determining whether a Column Descriptor is unused may take too long
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Key: HIVE-2368
URL: https://issues.apache.org/jira/browse/HIVE-2368
Project: Hive
Issue Type: Bug
Components: Metastore
Reporter: Sohan Jain
Attachments: HIVE-2368.1.patch
To determine if a column descriptor is unused, we call
listStorageDescriptorsWithCD(), which may return a big list of SDs. This can
severely slow down dropping partitions.
We can add a maximum number of SDs to return, and just ask for 1 SD, since we
are just doing an existential check.
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