Github user johd01 commented on the pull request:
https://github.com/apache/spark/pull/7943#issuecomment-171216053
Hi
This does not seem to work properly.
After the first nodemanager restart:
2016-01-13 08:22:24,472 ERROR shuffle.ExternalShuffleBlockResolver
(ExternalShuffleBlockResolver.java:<init>(113)) - error opening leveldb file
/var/hadoop/data1/yarn/nm/registeredExecutors.ldb. Creating
new file, will not be able to recover state for existing applications
org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error:
/usr/hdp/2.3.2.0-2950/hadoop-yarn/
/var/hadoop/data1/yarn/nm/registeredExecutors.ldb/LOCK: No such
file or directory
at
org.fusesource.leveldbjni.internal.NativeDB.checkStatus(NativeDB.java:200)
at org.fusesource.leveldbjni.internal.NativeDB.open(NativeDB.java:218)
at org.fusesource.leveldbjni.JniDBFactory.open(JniDBFactory.java:168)
at
org.apache.spark.network.shuffle.ExternalShuffleBlockResolver.<init>(ExternalShuffleBlockResolver.java:100)
at
org.apache.spark.network.shuffle.ExternalShuffleBlockResolver.<init>(ExternalShuffleBlockResolver.java:81)
at
org.apache.spark.network.shuffle.ExternalShuffleBlockHandler.<init>(ExternalShuffleBlockHandler.java:56)
at
org.apache.spark.network.yarn.YarnShuffleService.serviceInit(YarnShuffleService.java:128)
at
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at
org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices.serviceInit(AuxServices.java:143)
at
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at
org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
at
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceInit(ContainerManagerImpl.java:245)
at
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at
org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
at
org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:291)
at
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at
org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:537)
at
org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:585)
2016-01-13 08:22:24,474 WARN shuffle.ExternalShuffleBlockResolver
(ExternalShuffleBlockResolver.java:<init>(123)) - error deleting
/var/hadoop/data1/yarn/nm/registeredExecutors.ldb
2016-01-13 08:22:24,474 ERROR yarn.YarnShuffleService
(YarnShuffleService.java:serviceInit(130)) - Failed to initialize external
shuffle service
java.io.IOException: Unable to create state store
Workaround: switch back to spark-1.5.2-yarn.shuffle.jar
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