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Posted to dev@hive.apache.org by "Mithun Radhakrishnan (JIRA)" <ji...@apache.org> on 2015/02/05 07:48:34 UTC
[jira] [Updated] (HIVE-9588) Reimplement
HCatClientHMSImpl.dropPartitions() with HMSC.dropPartitions()
[ https://issues.apache.org/jira/browse/HIVE-9588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mithun Radhakrishnan updated HIVE-9588:
---------------------------------------
Status: Patch Available (was: Open)
> 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
> Attachments: HIVE-9588.1.patch
>
>
> {{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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