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https://issues.apache.org/jira/browse/PARQUET-2171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17764578#comment-17764578
]
ASF GitHub Bot commented on PARQUET-2171:
-----------------------------------------
steveloughran opened a new pull request, #1139:
URL: https://github.com/apache/parquet-mr/pull/1139
Make sure you have checked _all_ steps below.
### Jira
- [X] My PR addresses the following [Parquet
Jira](https://issues.apache.org/jira/browse/PARQUET/) issues and references
them in the PR title. For example, "PARQUET-1234: My Parquet PR"
- https://issues.apache.org/jira/browse/PARQUET-XXX
- In case you are adding a dependency, check if the license complies with
the [ASF 3rd Party License
Policy](https://www.apache.org/legal/resolved.html#category-x).
### Tests
- [X] My PR adds the following unit tests
TestVectorIOBridge
TestFileRangeBridge
It also parameterizes existing tests run with/without vector IO enabled.
`TestParquetFileWriter`
`TestInputFormatColumnProjection`
`TestInputOutputFormat`
### Commits
- [X] My commits all reference Jira issues in their subject lines. In
addition, my commits follow the guidelines from "[How to write a good git
commit message](http://chris.beams.io/posts/git-commit/)":
1. Subject is separated from body by a blank line
1. Subject is limited to 50 characters (not including Jira issue reference)
1. Subject does not end with a period
1. Subject uses the imperative mood ("add", not "adding")
1. Body wraps at 72 characters
1. Body explains "what" and "why", not "how"
### Documentation
- [X] In case of new functionality, my PR adds documentation that describes
how to use it.
- All the public functions and the classes in the PR contain Javadoc that
explain what it does
> Implement vectored IO in parquet file format
> --------------------------------------------
>
> Key: PARQUET-2171
> URL: https://issues.apache.org/jira/browse/PARQUET-2171
> Project: Parquet
> Issue Type: New Feature
> Components: parquet-mr
> Reporter: Mukund Thakur
> Priority: Major
>
> We recently added a new feature called vectored IO in Hadoop for improving
> read performance for seek heavy readers. Spark Jobs and others which uses
> parquet will greatly benefit from this api. Details can be found here
> [https://github.com/apache/hadoop/commit/e1842b2a749d79cbdc15c524515b9eda64c339d5]
> https://issues.apache.org/jira/browse/HADOOP-18103
> https://issues.apache.org/jira/browse/HADOOP-11867
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