GitHub user kiszk opened a pull request:
https://github.com/apache/spark/pull/20672
[SPARK-23509][Build] Upgrade commons-net from 2.2 to 3.1
## What changes were proposed in this pull request?
This PR avoids version conflicts of `commons-net`. We are seeing the
following message during the build using sbt.
```
[warn] Found version conflict(s) in library dependencies; some are
suspected to be binary incompatible:
...
[warn] * commons-net:commons-net:3.1 is selected over 2.2
[warn] +- org.apache.hadoop:hadoop-common:2.6.5
(depends on 3.1)
[warn] +- org.apache.spark:spark-core_2.11:2.4.0-SNAPSHOT
(depends on 2.2)
[warn]
```
[Here](https://commons.apache.org/proper/commons-net/changes-report.html)
is a release history.
[Here](https://commons.apache.org/proper/commons-net/migration.html) is a
migration guide from 2.x to 3.0 and from 3.x to 3.5.
## How was this patch tested?
Existing tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kiszk/spark SPARK-23509
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20672.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #20672
----
commit 97a254040009f18faf2641a60891d24bb618737c
Author: Kazuaki Ishizaki <ishizaki@...>
Date: 2018-02-25T19:06:54Z
initial commit
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