Yuming Wang 9df08e218c [SPARK-22454][CORE] ExternalShuffleClient.close() should check clientFactory null ... ## What changes were proposed in this pull request? `ExternalShuffleClient.close()` should check `clientFactory` null. otherwise it will throw NPE sometimes: ``` 17/11/06 20:08:05 ERROR Utils: Uncaught exception in thread main java.lang.NullPointerException at org.apache.spark.network.shuffle.ExternalShuffleClient.close(ExternalShuffleClient.java:152) at org.apache.spark.storage.BlockManager.stop(BlockManager.scala:1407) at org.apache.spark.SparkEnv.stop(SparkEnv.scala:89) at org.apache.spark.SparkContext$$anonfun$stop$11.apply$mcV$sp(SparkContext.scala:1849) ``` ## How was this patch tested? manual tests Author: Yuming Wang <wgyumg@gmail.com> Closes #19670 from wangyum/SPARK-22454.		2017-11-07 08:30:58 +00:00
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kvstore	[SPARK-20643][CORE] Add listener implementation to collect app state.	2017-10-26 11:05:16 -05:00
network-common	[SPARK-22066][BUILD] Update checkstyle to 8.2, enable it, fix violations	2017-09-20 10:01:46 +01:00
network-shuffle	[SPARK-22454][CORE] ExternalShuffleClient.close() should check clientFactory null	2017-11-07 08:30:58 +00:00
network-yarn	[SPARK-17321][YARN] Avoid writing shuffle metadata to disk if NM recovery is disabled	2017-08-31 09:26:20 +08:00
sketch	[SPARK-22066][BUILD] Update checkstyle to 8.2, enable it, fix violations	2017-09-20 10:01:46 +01:00
tags	[SPARK-20453] Bump master branch version to 2.3.0-SNAPSHOT	2017-04-24 21:48:04 -07:00
unsafe	[SPARK-22349] In on-heap mode, when allocating memory from pool,we should fill memory with MEMORY_DEBUG_FILL_CLEAN_VALUE	2017-10-25 21:34:00 +05:30