[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[SparkQA]

Github user SparkQA commented on the pull request:

https://github.com/apache/spark/pull/12745#issuecomment-215302102
  
**[Test build #2898 has 
started](https://amplab.cs.berkeley.edu/jenkins/job/NewSparkPullRequestBuilder/2898/consoleFull)**
 for PR 12745 at commit 
[`7fe0e54`](https://github.com/apache/spark/commit/7fe0e54c5e39ff942fd58a16d5e5e309887ee883).


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[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[rxin]

Github user rxin commented on a diff in the pull request:

https://github.com/apache/spark/pull/12745#discussion_r61370370
  
--- Diff: core/src/main/scala/org/apache/spark/util/SignalUtils.scala ---
@@ -94,7 +94,7 @@ private[spark] object SignalUtils extends Logging {
 
   // run all actions, escalate to parent handler if no action catches 
the signal
   // (i.e. all actions return false)
-  val escalate = actions.asScala.forall { action => !action() }
+  val escalate = actions.asScala.map(action => action()).forall(_ == 
false)
--- End diff --

we should probably leave a comment here saying why we are doing map and 
then forall, to make sure nobody would come in and "optimize" the map.forall 
into just a forall.



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[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[rxin]

Github user rxin commented on the pull request:

https://github.com/apache/spark/pull/12745#issuecomment-215301937
  
@jodersky this really isn't a hot fix. Can you remove that label?



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[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[jodersky]

Github user jodersky commented on the pull request:

https://github.com/apache/spark/pull/12745#issuecomment-215272244
  
looks like a flaky test
jenkins, retest this please


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[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[AmplabJenkins]

Github user AmplabJenkins commented on the pull request:

https://github.com/apache/spark/pull/12745#issuecomment-215271915
  
Merged build finished. Test FAILed.


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[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[AmplabJenkins]

Github user AmplabJenkins commented on the pull request:

https://github.com/apache/spark/pull/12745#issuecomment-215271917
  
Test FAILed.
Refer to this link for build results (access rights to CI server needed): 
https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/57188/
Test FAILed.


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[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[SparkQA]

Github user SparkQA commented on the pull request:

https://github.com/apache/spark/pull/12745#issuecomment-215271778
  
**[Test build #57188 has 
finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/57188/consoleFull)**
 for PR 12745 at commit 
[`7fe0e54`](https://github.com/apache/spark/commit/7fe0e54c5e39ff942fd58a16d5e5e309887ee883).
 * This patch **fails Spark unit tests**.
 * This patch merges cleanly.
 * This patch adds no public classes.


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[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[SparkQA]

Github user SparkQA commented on the pull request:

https://github.com/apache/spark/pull/12745#issuecomment-215252572
  
**[Test build #57188 has 
started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/57188/consoleFull)**
 for PR 12745 at commit 
[`7fe0e54`](https://github.com/apache/spark/commit/7fe0e54c5e39ff942fd58a16d5e5e309887ee883).


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[GitHub] spark pull request: [SPARK-10001][Core][Hotfix] Don't short-circui...

[jodersky]

GitHub user jodersky opened a pull request:

https://github.com/apache/spark/pull/12745

[SPARK-10001][Core][Hotfix] Don't short-circuit actions in signal handlers

## What changes were proposed in this pull request?
The current signal handlers have a subtle bug that stops evaluating 
registered actions as soon as one of them returns true, this is because 
`forall` is short-circuited.
This PR adds a strict mapping stage before evaluating returned result.
There are no known occurrences of the bug and this is a preemptive fix.

## How was this patch tested?
As with the original introduction of signal handlers, this was tested 
manually (unit testing with signals is not straightforward).



You can merge this pull request into a Git repository by running:

$ git pull https://github.com/jodersky/spark SPARK-10001-hotfix

Alternatively you can review and apply these changes as the patch at:

https://github.com/apache/spark/pull/12745.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

This closes #12745


commit 7fe0e54c5e39ff942fd58a16d5e5e309887ee883
Author: Jakob Odersky 
Date:   2016-04-27T22:26:41Z

Evaluate all actions in signal handlers (don't short-circuit)




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