zsxwing 47e7ffe36b [SPARK-7655][Core][SQL] Remove 'scala.concurrent.ExecutionContext.Implicits.global' in 'ask' and 'BroadcastHashJoin' ... Because both `AkkaRpcEndpointRef.ask` and `BroadcastHashJoin` uses `scala.concurrent.ExecutionContext.Implicits.global`. However, because the tasks in `BroadcastHashJoin` are usually long-running tasks, which will occupy all threads in `global`. Then `ask` cannot get a chance to process the replies. For `ask`, actually the tasks are very simple, so we can use `MoreExecutors.sameThreadExecutor()`. For `BroadcastHashJoin`, it's better to use `ThreadUtils.newDaemonCachedThreadPool`. Author: zsxwing <zsxwing@gmail.com> Closes #6200 from zsxwing/SPARK-7655-2 and squashes the following commits: cfdc605 [zsxwing] Remove redundant imort and minor doc fix cf83153 [zsxwing] Add "sameThread" and "newDaemonCachedThreadPool with maxThreadNumber" to ThreadUtils 08ad0ee [zsxwing] Remove 'scala.concurrent.ExecutionContext.Implicits.global' in 'ask' and 'BroadcastHashJoin'		2015-05-16 00:44:29 -07:00
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src	[SPARK-7655][Core][SQL] Remove 'scala.concurrent.ExecutionContext.Implicits.global' in 'ask' and 'BroadcastHashJoin'	2015-05-16 00:44:29 -07:00
pom.xml	[SPARK-7081] Faster sort-based shuffle path using binary processing cache-aware sort	2015-05-13 17:07:31 -07:00