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From "Phabricator (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-4248) Implement a memory manager for ORC
Date Fri, 05 Apr 2013 23:41:17 GMT

     [ https://issues.apache.org/jira/browse/HIVE-4248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phabricator updated HIVE-4248:
------------------------------

    Attachment: HIVE-4248.D9993.2.patch

omalley updated the revision "HIVE-4248 [jira] Implement a memory manager for ORC".

    - HIVE-4303 remove empty java files

Reviewers: JIRA

REVISION DETAIL
  https://reviews.facebook.net/D9993

CHANGE SINCE LAST DIFF
  https://reviews.facebook.net/D9993?vs=31305&id=31311#toc

AFFECTED FILES
  common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
  metastore/src/java/org/apache/hadoop/hive/metastore/PartitionNameWhitelistPreEventListener.java
  metastore/src/test/org/apache/hadoop/hive/metastore/TestPartitionNameWhitelistPreEventHook.java
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/MemoryManager.java
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcFile.java
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcOutputFormat.java
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/WriterImpl.java
  ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestFileDump.java
  ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestMemoryManager.java
  ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestOrcFile.java

To: JIRA, omalley

                
> Implement a memory manager for ORC
> ----------------------------------
>
>                 Key: HIVE-4248
>                 URL: https://issues.apache.org/jira/browse/HIVE-4248
>             Project: Hive
>          Issue Type: New Feature
>          Components: Serializers/Deserializers
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>         Attachments: HIVE-4248.D9993.1.patch, HIVE-4248.D9993.2.patch
>
>
> With the large default stripe size (256MB) and dynamic partitions, it is quite easy for
users to run out of memory when writing ORC files. We probably need a solution that keeps
track of the total number of concurrent ORC writers and divides the available heap space between
them. 

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