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Posted to dev@hive.apache.org by "Phabricator (JIRA)" <ji...@apache.org> on 2013/08/14 20:57:47 UTC
[jira] [Updated] (HIVE-5091) ORC files should have an option to pad
stripes to the HDFS block boundaries
[ https://issues.apache.org/jira/browse/HIVE-5091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Phabricator updated HIVE-5091:
------------------------------
Attachment: HIVE-5091.D12249.1.patch
omalley requested code review of "HIVE-5091 [jira] ORC files should have an option to pad stripes to the HDFS block boundaries".
Reviewers: JIRA
pad blocks out to the hdfs block boundaries
With ORC stripes being large, if a stripe straddles an HDFS block, the locality of read is suboptimal. It would be good to add padding to ensure that stripes don't straddle HDFS blocks.
TEST PLAN
EMPTY
REVISION DETAIL
https://reviews.facebook.net/D12249
AFFECTED FILES
common/src/java/org/apache/hadoop/hive/conf/HiveConf.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/ReaderImpl.java
ql/src/java/org/apache/hadoop/hive/ql/io/orc/WriterImpl.java
ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestNewIntegerEncoding.java
ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestOrcFile.java
ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestOrcNullOptimization.java
MANAGE HERALD RULES
https://reviews.facebook.net/herald/view/differential/
WHY DID I GET THIS EMAIL?
https://reviews.facebook.net/herald/transcript/29277/
To: JIRA, omalley
> ORC files should have an option to pad stripes to the HDFS block boundaries
> ---------------------------------------------------------------------------
>
> Key: HIVE-5091
> URL: https://issues.apache.org/jira/browse/HIVE-5091
> Project: Hive
> Issue Type: Bug
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Attachments: HIVE-5091.D12249.1.patch
>
>
> With ORC stripes being large, if a stripe straddles an HDFS block, the locality of read is suboptimal. It would be good to add padding to ensure that stripes don't straddle HDFS blocks.
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