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https://issues.apache.org/jira/browse/DRILL-3749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14735289#comment-14735289
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Jacques Nadeau commented on DRILL-3749:
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It looks like Wire compatibility exists between 2.5 and 2.7 according to
http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/Compatibility.html#Policy
That being said, I'm not sure whether that means the 2.7 client will work with
a 2.5 cluster.
> Upgrade Hadoop dependency to latest version (2.7.1)
> ---------------------------------------------------
>
> Key: DRILL-3749
> URL: https://issues.apache.org/jira/browse/DRILL-3749
> Project: Apache Drill
> Issue Type: New Feature
> Components: Tools, Build & Test
> Affects Versions: 1.1.0
> Reporter: Venki Korukanti
> Assignee: Steven Phillips
> Fix For: 1.3.0
>
>
> Logging a JIRA to track and discuss upgrading Drill's Hadoop dependency
> version. Currently Drill depends on Hadoop 2.5.0 version. Newer version of
> Hadoop (2.7.1) has following features.
> 1) Better S3 support
> 2) Ability to check if a user has certain permissions on file/directory
> without performing operations on the file/dir. Useful for cases like
> DRILL-3467.
> As Drill is going to use higher version of Hadoop fileclient, there could be
> potential issues when interacting with Hadoop services (such as HDFS) of
> lower version than the fileclient.
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