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Posted to issues@hive.apache.org by "Adam Szita (JIRA)" <ji...@apache.org> on 2018/03/06 16:47:00 UTC
[jira] [Commented] (HIVE-18705) Improve
HiveMetaStoreClient.dropDatabase
[ https://issues.apache.org/jira/browse/HIVE-18705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16388082#comment-16388082 ]
Adam Szita commented on HIVE-18705:
-----------------------------------
Attaching first version of patch to run functional verification via precommit tests.
> Improve HiveMetaStoreClient.dropDatabase
> ----------------------------------------
>
> Key: HIVE-18705
> URL: https://issues.apache.org/jira/browse/HIVE-18705
> Project: Hive
> Issue Type: Improvement
> Reporter: Adam Szita
> Assignee: Adam Szita
> Priority: Major
> Attachments: HIVE-18705.0.patch
>
>
> {{HiveMetaStoreClient.dropDatabase}} has a strange implementation to ensure dealing with client side hooks (for non-native tables e.g. HBase). Currently it starts by retrieving all the tables from HMS, and then sends {{dropTable}} calls to HMS table-by-table. At the end a {{dropDatabase}} just to be sure :)
> I believe this could be refactored so that it speeds up the dropDB in situations where the average table count per DB is very high.
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