[SPARK-9487] Use the same num. worker threads in Java/Scala unit tests #15848

skanjila · 2016-11-11T00:45:55Z

What changes were proposed in this pull request?

Changed code to use local[4] instead of local[2] when creating SparkConf, Fixed JavaAPISuite unit test, added TestSQLContext

How was this patch tested?

Ran unit tests across core, mllib,external, streaming without issues, note that this is the second version of the pull request as the first one got messed up by doing rebase incorrectly. Once this gets committed I will work on python pieces next.

Please review https://cwiki.apache.org/confluence/display/SPARK/Contributing+to+Spark before opening a pull request.

HyukjinKwon · 2016-11-11T02:08:49Z

Just to be clear, from the discussion in the JIRA, it seems PageViewStream example is missed intendedly here for now because changing from local[2] to local[4] is failed for an unknown reason?

And.. it seems

./sql/core/src/test/scala/org/apache/spark/sql/test/TestSQLContext.scala:    this(new SparkContext("local[2]", "test-sql-context",

is missed?

skanjila · 2016-11-11T02:33:25Z

Yes to your first comment on PageViewStream, for the other one TestSQLContext it was unfortunately missed, I'lol add that with the next pull request which will also contain the code fixes to the Python unit tests, is it ok to merge this one without the things you mention.

skanjila · 2016-11-11T02:35:31Z

Also I really would love to avoid having to rebase yet again due to more needed commits :) to this pull request

srowen · 2016-11-11T17:57:50Z

@skanjila rebases are a fact of life, but they're not hard. I doubt it will be an issue here.
No, you shouldn't make other changes in a separate PR. If TestSQLContext needs to be changed too please make the change here.
There is more to this process before we can merge, so no need to push on merging this. For example, tests even have to pass.

srowen · 2016-11-11T17:57:54Z

Jenkins test this please

srowen · 2016-11-11T17:57:59Z

Jenkins add to whitelist

srowen · 2016-11-11T18:01:47Z

Also please fix the title to [SPARK-9487], and remove Python reference

SparkQA · 2016-11-11T19:58:33Z

Test build #68529 has finished for PR 15848 at commit cc9cbdc.

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

SparkQA · 2016-11-11T20:55:20Z

Test build #68531 has finished for PR 15848 at commit 9540f70.

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

SparkQA · 2016-11-12T10:48:51Z

Test build #3422 has finished for PR 15848 at commit 9540f70.

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

SparkQA · 2016-11-19T23:05:27Z

Test build #68897 has finished for PR 15848 at commit ecba8e5.

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

srowen · 2016-11-22T11:44:14Z

streaming/src/test/java/org/apache/spark/streaming/JavaAPISuite.java

-    Assert.assertEquals(expected, result);
+
+
+    for (int i=0;i<expected.size();i++) {


This only asserts that the actual result is a superset of the expected results. It won't catch the case that it contains unexpected values. You could check both ways.

srowen · 2016-11-27T10:19:12Z

@skanjila are you proceeding with this? if not can you close it for now?

skanjila · 2016-11-27T16:33:27Z

Yes the plan is to comment out the failures for now but keep the rest of the changes, fix the Python unit tests with local[4] and then come back and fix the rest of the failures, let me know if you see issues with this approach

HyukjinKwon · 2016-11-28T00:15:16Z

This is actually what I was worried of initially. So, you mean you are going to fix the failure tests here in this PR at the end?

skanjila · 2016-11-28T00:18:22Z

The plan is to comment out the tests causing Jenkins failures for now, fix the Python unit tests to work with local[4] and then come back and fix these other Jenkins failures, make sense?

HyukjinKwon · 2016-11-28T00:55:41Z

In my personal opinion, I think we should fix here together. Maybe we could

Run the tests with --fail-never flag in the maven in order to list up the failed tests. If they are few and fixable, then we can fix them up here.
If they are few but not sure why they are failed, I think we could make them ignore here (personally I think this is even not preferable though, I guess it might be acceptable).
If they are a lot (or assumed to be a lot), I think we should incrementally fix each by each.

I think making them ignored sounds pretty unsafe if they are a lot. They exist to test regression and we would not be able to detect them until they are actually tested. It is so close for Spark 2.1 release and I am worried if we meet unexpected test failures when it is actually backported.

If this PR blocks the release, it might be acceptable if this is the only choice but it seems not.

HyukjinKwon · 2016-11-28T01:00:45Z

streaming/src/test/java/org/apache/spark/streaming/JavaAPISuite.java

+      Assert.assertTrue(resultTupleList.containsAll(expectedTupleList));
+    }
+
+    //Assert.assertEquals(expected, result);


BTW, I think we might not need to leave this comment as it is able to be tracked down via blame button or history.

skanjila · 2016-11-28T01:11:22Z

@HyujkinKwon I saw at least 3 to 4 failures in unit tests that happened in Jenkins but not locally (meaning the test succeeded locally). I completely agree with you about not marking something ignored as it has the potential to come back and cause more work later. It may take longer to fix all the failures to use local[4] than the 2.1 release. Am wondering if it makes sense to keep this pull request open, I'd like to keep working on this but focused towards fixing the Pyspatl failures at this point .

skanjila · 2016-11-28T01:12:21Z

Sorry I meant Pyspark failures from unit tests , pardon my typos

HyukjinKwon · 2016-11-28T01:26:18Z

I saw several PRs time to time to run automatic Jenkins tests (with the title including [DO-NOT-MERGE]) . So, I think it is fine to keep this open and push some commits/run some tests to detect the failure tests if you are proceeding this further and it is not intended to make many ignored tests merged.

If this PR is not supposed to be updated like few weeks, I think it is reasonable to close this for now.

… failures

skanjila · 2016-11-29T04:28:31Z

I've changed the underlying trait for LogisticRegressionSuite and OneVsRestSuite to use local[2], will add in python changes next , want to get this PR across with this set of changes

SparkQA · 2016-11-29T06:19:20Z

Test build #69297 has finished for PR 15848 at commit eb0936b.

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

HyukjinKwon · 2017-01-01T14:23:42Z

@skanjila We would be able to close this if there are no updates for now.

skanjila · 2017-01-01T21:42:09Z

HyukjinKwon I've been out of the country the last 2 weeks, that's why you don't see updates, I plan to resume work on this next week by making unit tests in the sql module more reliable, once that passes I'll pick more modules

HyukjinKwon · 2017-01-17T09:32:41Z

@skanjila Could we close this for now?

skanjila · 2017-01-17T17:47:19Z

Yes by all means

changes for using local[4] in all parts of java/scala codebase only

cc9cbdc

skanjila changed the title ~~[SPARK-9487v2] Use the same num. worker threads in Scala/Python unit tests~~ [SPARK-9487] Use the same num. worker threads in Scala unit tests Nov 11, 2016

skanjila changed the title ~~[SPARK-9487] Use the same num. worker threads in Scala unit tests~~ [SPARK-9487] Use the same num. worker threads in Java/Scala unit tests Nov 11, 2016

added TestSQLContext.scala

9540f70

fixed JavaAPISuite unit test for count by value by comparing two lists

ecba8e5

srowen reviewed Nov 22, 2016

View reviewed changes

HyukjinKwon reviewed Nov 28, 2016

View reviewed changes

reverted changes to trait to use local[2] again for jenkins unit test…

eb0936b

… failures

srowen mentioned this pull request Jan 7, 2017

SPARK-9487][Tests] Begin the work of robustifying unit tests , start with ContextCleanerSuite #16498

Closed

skanjila closed this Jan 17, 2017

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[SPARK-9487] Use the same num. worker threads in Java/Scala unit tests #15848

[SPARK-9487] Use the same num. worker threads in Java/Scala unit tests #15848

skanjila commented Nov 11, 2016 •

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		Assert.assertEquals(expected, result);


		for (int i=0;i<expected.size();i++) {

[SPARK-9487] Use the same num. worker threads in Java/Scala unit tests #15848

[SPARK-9487] Use the same num. worker threads in Java/Scala unit tests #15848

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skanjila commented Nov 11, 2016 • edited

What changes were proposed in this pull request?

How was this patch tested?

HyukjinKwon commented Nov 11, 2016

skanjila commented Nov 11, 2016

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