GitHub user zsxwing opened a pull request:
https://github.com/apache/spark/pull/6223
[SPARK-7693][Core] Remove "import
scala.concurrent.ExecutionContext.Implicits.global"
Learnt a lesson from SPARK-7655: Spark should avoid to use
`scala.concurrent.ExecutionContext.Implicits.global` because the user may
submit blocking actions to `scala.concurrent.ExecutionContext.Implicits.global`
and exhaust all threads in it. This could crash Spark. So Spark should always
use its own thread pools for safety.
This PR removes all usages of
`scala.concurrent.ExecutionContext.Implicits.global` and uses proper thread
pools to replace them.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zsxwing/spark SPARK-7693
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6223.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 #6223
----
commit cf4b3fc8eedd7ddca618d8bec441820303241620
Author: zsxwing <[email protected]>
Date: 2015-05-16T04:51:52Z
Remove "import scala.concurrent.ExecutionContext.Implicits.global"
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