GitHub user andrewor14 opened a pull request:
https://github.com/apache/spark/pull/762
[SPARK-1769] Executor loss causes NPE race condition
This PR replaces the Schedulable data structures in Pool.scala with
thread-safe ones from java. Note that Scala's `with SynchronizedBuffer` trait
is soon to be deprecated in 2.11 because it is "unreliable." We should slowly
drift away from `SynchronizedBuffer` in other places too.
Note that this PR introduces an API-breaking change; `sc.getAllPools` now
returns an Array rather than an ArrayBuffer. This is because we want this
method to return an immutable copy rather than one for which modifications take
no effect in the original data structure.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/andrewor14/spark pool-npe
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/762.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 #762
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commit 07d720c4b3883c397cc903ea61d3fc871e883429
Author: Andrew Or <[email protected]>
Date: 2014-05-13T23:16:21Z
Synchronize Schedulable data structures
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