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https://issues.apache.org/jira/browse/HIVE-2213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050841#comment-13050841
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[email protected] commented on HIVE-2213:
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https://reviews.apache.org/r/878/#review858
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trunk/metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java
<https://reviews.apache.org/r/878/#comment1877>
Can we make this method parameterized to reduce the number of casts
required? E.g.
private <T> Collection <T> getPartition...
We might have to do something like <String>getPartition... when making the
call though.
- Paul
On 2011-06-16 23:30:02, Sohan Jain wrote:
bq.
bq. -----------------------------------------------------------
bq. This is an automatically generated e-mail. To reply, visit:
bq. https://reviews.apache.org/r/878/
bq. -----------------------------------------------------------
bq.
bq. (Updated 2011-06-16 23:30:02)
bq.
bq.
bq. Review request for hive and Paul Yang.
bq.
bq.
bq. Summary
bq. -------
bq.
bq. 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.
bq.
bq.
bq. This addresses bug HIVE-2213.
bq. https://issues.apache.org/jira/browse/HIVE-2213
bq.
bq.
bq. Diffs
bq. -----
bq.
bq. trunk/common/src/java/org/apache/hadoop/hive/common/FileUtils.java
1135227
bq.
trunk/metastore/src/java/org/apache/hadoop/hive/metastore/HiveMetaStore.java
1135227
bq.
trunk/metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java
1135227
bq. trunk/metastore/src/java/org/apache/hadoop/hive/metastore/RawStore.java
1135227
bq. trunk/metastore/src/java/org/apache/hadoop/hive/metastore/Warehouse.java
1135227
bq.
trunk/metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java
1135227
bq.
bq. Diff: https://reviews.apache.org/r/878/diff
bq.
bq.
bq. Testing
bq. -------
bq.
bq. Passes previous test cases for get_partition_names_ps() in
TestHiveMetaStore.
bq.
bq.
bq. Thanks,
bq.
bq. Sohan
bq.
bq.
> 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, HIVE-2213.3.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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