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https://issues.apache.org/jira/browse/HIVE-2213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13047041#comment-13047041
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jirapos...@reviews.apache.org commented on HIVE-2213:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/878/
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Review request for hive and Paul Yang.
Summary
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If a table has a large number of partitions, get_partition_names_ps() make take
a long time to execute, because we get all of the partition names from the
database. This is not very memory efficient, and the operation can be pushed
down to the JDO layer without getting all of the names first.
This addresses bug HIVE-2213.
https://issues.apache.org/jira/browse/HIVE-2213
Diffs
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trunk/common/src/java/org/apache/hadoop/hive/common/FileUtils.java 1134205
trunk/metastore/src/java/org/apache/hadoop/hive/metastore/HiveMetaStore.java
1134205
trunk/metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java
1134205
trunk/metastore/src/java/org/apache/hadoop/hive/metastore/RawStore.java
1134205
trunk/metastore/src/java/org/apache/hadoop/hive/metastore/Warehouse.java
1134205
trunk/metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java
1134205
Diff: https://reviews.apache.org/r/878/diff
Testing
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Passes previous test cases for get_partition_names_ps() in TestHiveMetaStore.
Thanks,
Sohan
> Optimize get_partition_names_ps()
> ---------------------------------
>
> Key: HIVE-2213
> URL: https://issues.apache.org/jira/browse/HIVE-2213
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Reporter: Sohan Jain
> Assignee: Sohan Jain
> Attachments: HIVE-2213.1.patch
>
>
> If a table has a large number of partitions, get_partition_names_ps() make
> take a long time to execute, because we get all of the partition names from
> the database. This is not very memory efficient, and the operation can be
> pushed down to the JDO layer without getting all of the names first.
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