Ted Yu created SPARK-13204:
------------------------------
Summary: Replace use of mutable.SynchronizedMap with
ConcurrentHashMap
Key: SPARK-13204
URL: https://issues.apache.org/jira/browse/SPARK-13204
Project: Spark
Issue Type: Bug
Reporter: Ted Yu
>From
>http://www.scala-lang.org/api/2.11.1/index.html#scala.collection.mutable.SynchronizedMap
> :
Synchronization via traits is deprecated as it is inherently unreliable.
Consider java.util.concurrent.ConcurrentHashMap as an alternative.
This issue is to replace the use of mutable.SynchronizedMap and add scalastyle
rule banning mutable.SynchronizedMap
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