[SPARK-5574] use given name prefix in dir

[squito]

https://issues.apache.org/jira/browse/SPARK-5574

very minor, doesn't effect external behavior at all.
Note that after this change, some of these dirs no longer will have "spark" in the name at all. I could change those locations that do pass in a name prefix to also include "spark", eg. "blockmgr" -> "spark-blockmgr"

[SparkQA]

Test build #26681 has started for PR 4344 at commit 33a84fe.

• This patch merges cleanly.

[vanzin]

hey @squito , could you add [SPARK-5574] to the PR title to follow the usual convention? Thx!

[vanzin]

other than that, LGTM.

[squito]

whoops, sorry I forgot about the title, just updated.

[SparkQA]

Test build #26681 has finished for PR 4344 at commit 33a84fe.

• This patch fails MiMa tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • class SimpleFunctionRegistry(val caseSensitive: Boolean) extends FunctionRegistry
  • class StringKeyHashMap[T](normalizer: (String) => String)
  • case class MultiAlias(child: Expression, names: Seq[String])

[AmplabJenkins]

Test FAILed.
Refer to this link for build results (access rights to CI server needed):
https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/26681/
Test FAILed.

[rxin]

Do you know what the common root is? Is it just tmp? If yes, maybe we do want to prefix spark always. If it is some special Spark tmp folder, then I think it is fine to not have the spark prefix.

[vanzin]

commit 52f575 added a user-specific root under the temp dir, so you'd always have these directories under one that's named spark-[uuid].

[rxin]

Then this lgtm.

[pwendell]

LGTM too

[pwendell]

Jenkins, test this please.

[SparkQA]

Test build #26728 has started for PR 4344 at commit 33a84fe.

• This patch merges cleanly.

[SparkQA]

Test build #26728 has finished for PR 4344 at commit 33a84fe.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[AmplabJenkins]

Test PASSed.
Refer to this link for build results (access rights to CI server needed):
https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/26728/
Test PASSed.

[rxin]

Merging this in master & branch-1.3.