Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/5786#issuecomment-101472800
Sounds good - however, I think the issues aren't totally decoupled, because
this pull request deletes the following line from the documentation:
```
# Apache Hadoop 2.2.X
-mvn -Pyarn -Phadoop-2.2 -Dhadoop.version=2.2.0 -DskipTests clean package
```
I am suggestion look, let's just keep that line there and always suggest
that people use a build profile. Otherwise changes like this will not be future
proof.
Changes to default behavior are annoying for developers and I see no
downside in asking people to be explicit about hadoop flags.
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