[SPARK-20877][SPARKR][WIP] add timestamps to test runs

[felixcheung]

What changes were proposed in this pull request?

to investigate how long they run

How was this patch tested?

Jenkins, AppVeyor

[SparkQA]

Test build #77330 has finished for PR 18104 at commit dab72a6.

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

[SparkQA]

Test build #77336 has finished for PR 18104 at commit 313dcbc.

• This patch fails R style tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #77339 has finished for PR 18104 at commit a72ab8c.

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

[SparkQA]

Test build #77403 has finished for PR 18104 at commit 3273a0d.

• This patch fails SparkR unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #77405 has finished for PR 18104 at commit 1d18d7b.

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

[SparkQA]

Test build #77406 has finished for PR 18104 at commit 21ca8f0.

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

[SparkQA]

Test build #77474 has finished for PR 18104 at commit 9056b75.

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

[SparkQA]

Test build #77481 has finished for PR 18104 at commit 9e848a1.

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

[felixcheung]

AppVeyor test portion took about 5 min https://ci.appveyor.com/project/ApacheSoftwareFoundation/spark/build/1361-master

[felixcheung]

perhaps we could cut down a lot more tests though http://r-pkgs.had.co.nz/tests.html#test-cran
if the target is under 1 min...

[shivaram]

@felixcheung This is very cool. Let me try this on a windows VM and winbuilder and get back to you.

[marmbrus]

Ping? I'd like to cut the next RC.

[felixcheung]

We were talking about another more drastic approach but what we have here would be improvement.

I'm reverting as-cran so this can go in (after another round of tests), and I think then should unblock RC.

[SparkQA]

Test build #77566 has finished for PR 18104 at commit 1392392.

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

[felixcheung]

ok passes. @shivaram what do you think about this?

[shivaram]

LGTM. Thanks @felixcheung for the update and @marmbrus for the ping

[felixcheung]

@shivaram did you get the chance to look at refactoring tests we discussed?