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https://issues.apache.org/jira/browse/HIVE-4421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phabricator updated HIVE-4421:
------------------------------
Attachment: HIVE-4421.D10545.4.patch
omalley updated the revision "HIVE-4421 [jira] Improve memory usage by ORC
dictionaries".
Addressed Ashutosh's suggestions.
Reviewers: ashutoshc, JIRA
REVISION DETAIL
https://reviews.facebook.net/D10545
CHANGE SINCE LAST DIFF
https://reviews.facebook.net/D10545?vs=33219&id=33249#toc
AFFECTED FILES
ql/src/java/org/apache/hadoop/hive/ql/io/orc/DynamicByteArray.java
ql/src/java/org/apache/hadoop/hive/ql/io/orc/DynamicIntArray.java
ql/src/java/org/apache/hadoop/hive/ql/io/orc/MemoryManager.java
ql/src/java/org/apache/hadoop/hive/ql/io/orc/OutStream.java
ql/src/java/org/apache/hadoop/hive/ql/io/orc/PositionedOutputStream.java
ql/src/java/org/apache/hadoop/hive/ql/io/orc/RedBlackTree.java
ql/src/java/org/apache/hadoop/hive/ql/io/orc/StringRedBlackTree.java
ql/src/java/org/apache/hadoop/hive/ql/io/orc/WriterImpl.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
ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestStringRedBlackTree.java
ql/src/test/resources/orc-file-dump.out
To: JIRA, ashutoshc, omalley
> Improve memory usage by ORC dictionaries
> ----------------------------------------
>
> Key: HIVE-4421
> URL: https://issues.apache.org/jira/browse/HIVE-4421
> Project: Hive
> Issue Type: Bug
> Components: Serializers/Deserializers
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.11.0
>
> Attachments: HIVE-4421.D10545.1.patch, HIVE-4421.D10545.2.patch,
> HIVE-4421.D10545.3.patch, HIVE-4421.D10545.4.patch
>
>
> Currently, for tables with many string columns, it is possible to
> significantly underestimate the memory used by the ORC dictionaries and cause
> the query to run out of memory in the task.
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