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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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