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From "Phabricator (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-5102) ORC getSplits should create splits based the stripes
Date Tue, 10 Sep 2013 23:47:52 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.D12849.1.patch

omalley requested code review of "HIVE-5102 [jira] ORC getSplits should create splits based
the stripes".

Reviewers: JIRA

HIVE-5102

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.

TEST PLAN
  EMPTY

REVISION DETAIL
  https://reviews.facebook.net/D12849

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

MANAGE HERALD RULES
  https://reviews.facebook.net/herald/view/differential/

WHY DID I GET THIS EMAIL?
  https://reviews.facebook.net/herald/transcript/30807/

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, HIVE-5102.D12849.1.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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