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From "Phabricator (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-5102) ORC getSplits should create splits based the stripes
Date Thu, 29 Aug 2013 17:34:58 GMT

     [ https://issues.apache.org/jira/browse/HIVE-5102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phabricator updated HIVE-5102:
------------------------------

    Attachment: HIVE-5102.D12579.2.patch

omalley updated the revision "HIVE-5102 [jira] ORC getSplits should create splits based the
stripes".

  Replaced local fs with the mockfs to prevent random reorderings that
  caused a test failure.

Reviewers: JIRA

REVISION DETAIL
  https://reviews.facebook.net/D12579

CHANGE SINCE LAST DIFF
  https://reviews.facebook.net/D12579?vs=39189&id=39261#toc

AFFECTED FILES
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcInputFormat.java
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ReaderImpl.java
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/StripeInformation.java
  ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestInputOutputFormat.java
  ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestOrcFile.java
  shims/src/0.20/java/org/apache/hadoop/hive/shims/Hadoop20Shims.java
  shims/src/0.20S/java/org/apache/hadoop/hive/shims/Hadoop20SShims.java
  shims/src/0.23/java/org/apache/hadoop/hive/shims/Hadoop23Shims.java
  shims/src/common/java/org/apache/hadoop/hive/shims/HadoopShims.java

To: JIRA, omalley

                
> ORC getSplits should create splits based the stripes 
> -----------------------------------------------------
>
>                 Key: HIVE-5102
>                 URL: https://issues.apache.org/jira/browse/HIVE-5102
>             Project: Hive
>          Issue Type: Bug
>          Components: File Formats
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>         Attachments: HIVE-5102.D12579.1.patch, HIVE-5102.D12579.2.patch
>
>
> Currently ORC inherits getSplits from FileFormat, which basically makes a split per an
HDFS block. This can create too little parallelism and would be better done by having getSplits
look at the file footer and create splits based on the stripes.

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