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https://issues.apache.org/jira/browse/HIVE-2907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13239099#comment-13239099
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Phabricator commented on HIVE-2907:
-----------------------------------

kevinwilfong has commented on the revision "HIVE-2907 [jira] Hive error when 
dropping a table with large number of partitions".

INLINE COMMENTS
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java:464-465
 Why are you checking for values.size() / 2 here?  Admittedly, this works, but 
shouldn't it be just 2? Or shouldn't you use values.size() / 2 in line 461?
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java:463 
sp returned
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java:506-507
 Same here re values.size() / 2 vs. 2
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java:505 
same here re returned sp
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java:512 
sp returned
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java:470 
sp returned

REVISION DETAIL
  https://reviews.facebook.net/D2505

                
> Hive error when dropping a table with large number of partitions
> ----------------------------------------------------------------
>
>                 Key: HIVE-2907
>                 URL: https://issues.apache.org/jira/browse/HIVE-2907
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>    Affects Versions: 0.9.0
>         Environment: General. Hive Metastore bug.
>            Reporter: Mousom Dhar Gupta
>            Priority: Minor
>             Fix For: 0.9.0
>
>         Attachments: HIVE-2907.1.patch.txt, HIVE-2907.D2505.1.patch, 
> HIVE-2907.D2505.2.patch, HIVE-2907.D2505.3.patch, HIVE-2907.D2505.4.patch
>
>   Original Estimate: 10h
>  Remaining Estimate: 10h
>
> Running into an "Out Of Memory" error when trying to drop a table with 128K 
> partitions.
> The methods dropTable in 
> metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java 
> and dropTable in ql/src/java/org/apache/hadoop/hive/ql/exec/DDLTask.java 
> encounter out of memory errors 
> when dropping tables with lots of partitions because they try to load the 
> metadata for every partition into memory.

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