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https://issues.apache.org/jira/browse/HIVE-4157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13617651#comment-13617651
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Hudson commented on HIVE-4157:
------------------------------
Integrated in Hive-trunk-h0.21 #2035 (See
[https://builds.apache.org/job/Hive-trunk-h0.21/2035/])
HIVE-4157: ORC runs out of heap when writing (Kevin Wilfong vi Gang Tim
Liu) (Revision 1462363)
Result = FAILURE
gangtimliu :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1462363
Files :
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/OutStream.java
> ORC runs out of heap when writing
> ---------------------------------
>
> Key: HIVE-4157
> URL: https://issues.apache.org/jira/browse/HIVE-4157
> Project: Hive
> Issue Type: Improvement
> Components: Serializers/Deserializers
> Affects Versions: 0.11.0
> Reporter: Kevin Wilfong
> Assignee: Kevin Wilfong
> Fix For: 0.11.0
>
> Attachments: HIVE-4157.1.patch.txt
>
>
> The OutStream class used by the ORC file format seems to aggressively
> allocate memory for ByteBuffers and doesn't seem too eager to give it back.
> This causes issues with heap space, particularly when a wide tables/dynamic
> partitions are involved.
> As a first step to resolving this problem, the OutStream class can be
> modified to lazily allocate memory, and more actively make it available for
> garbage collection.
> Follow ups could include checking the amount of free memory as part of
> determining if a spill is needed.
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