[jira] [Created] (HIVE-9588) Reimplement HCatClientHMSImpl.dropPartitions() with HMSC.dropPartitions()

["Mithun Radhakrishnan (JIRA)" <ji...@apache.org>]

Mithun Radhakrishnan created HIVE-9588:
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             Summary: Reimplement HCatClientHMSImpl.dropPartitions() with HMSC.dropPartitions()
                 Key: HIVE-9588
                 URL: https://issues.apache.org/jira/browse/HIVE-9588
             Project: Hive
          Issue Type: Bug
          Components: HCatalog, Metastore, Thrift API
    Affects Versions: 0.14.0
            Reporter: Mithun Radhakrishnan
            Assignee: Mithun Radhakrishnan


{{HCatClientHMSImpl.dropPartitions()}} currently has an embarrassingly inefficient implementation. The partial partition-spec is converted into a filter-string. The partitions are fetched from the server, and then dropped one by one.

Here's a reimplementation that uses the {{ExprNode}}-based {{HiveMetaStoreClient.dropPartitions()}}. It cuts out the excessive back-and-forth between the HMS and the client-side. It also reduces the memory footprint (from loading all the partitions that are to be dropped). 



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