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Xin Ren authored
[SPARK-16535][BUILD] In pom.xml, remove groupId which is redundant definition and inherited from the parent

https://issues.apache.org/jira/browse/SPARK-16535

## What changes were proposed in this pull request?

When I scan through the pom.xml of sub projects, I found this warning as below and attached screenshot
```
Definition of groupId is redundant, because it's inherited from the parent
```
![screen shot 2016-07-13 at 3 13 11 pm](https://cloud.githubusercontent.com/assets/3925641/16823121/744f893e-4916-11e6-8a52-042f83b9db4e.png)

I've tried to remove some of the lines with groupId definition, and the build on my local machine is still ok.
```
<groupId>org.apache.spark</groupId>
```
As I just find now `<maven.version>3.3.9</maven.version>` is being used in Spark 2.x, and Maven-3 supports versionless parent elements: Maven 3 will remove the need to specify the parent version in sub modules. THIS is great (in Maven 3.1).

ref: http://stackoverflow.com/questions/3157240/maven-3-worth-it/3166762#3166762

## How was this patch tested?

I've tested by re-building the project, and build succeeded.

Author: Xin Ren <iamshrek@126.com>

Closes #14189 from keypointt/SPARK-16535.
21a6dd2a
History
Name Last commit Last update
..
src/main/assembly
README
pom.xml
This is an assembly module for Spark project.

It creates a single tar.gz file that includes all needed dependency of the project
except for org.apache.hadoop.* jars that are supposed to be available from the
deployed Hadoop cluster.

This module is off by default. To activate it specify the profile in the command line
  -Pbigtop-dist

If you need to build an assembly for a different version of Hadoop the
hadoop-version system property needs to be set as in this example:
  -Dhadoop.version=2.0.6-alpha