[ https://issues.apache.org/jira/browse/SPARK-17933?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon updated SPARK-17933: --------------------------------- Labels: bulk-closed (was: ) > Shuffle fails when driver is on one of the same machines as executor > -------------------------------------------------------------------- > > Key: SPARK-17933 > URL: https://issues.apache.org/jira/browse/SPARK-17933 > Project: Spark > Issue Type: Bug > Components: Shuffle > Affects Versions: 1.6.2 > Reporter: Frank Rosner > Priority: Major > Labels: bulk-closed > Attachments: screenshot-1.png, screenshot-2.png > > > h4. Problem > When I run a job that requires some shuffle, some tasks fail because the > executor cannot fetch the shuffle blocks from another executor. > {noformat} > org.apache.spark.shuffle.FetchFailedException: Failed to connect to > 10-250-20-140:44042 > at > org.apache.spark.storage.ShuffleBlockFetcherIterator.throwFetchFailedException(ShuffleBlockFetcherIterator.scala:323) > at > org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:300) > at > org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:51) > at scala.collection.Iterator$$anon$11.next(Iterator.scala:328) > at scala.collection.Iterator$$anon$13.hasNext(Iterator.scala:371) > at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327) > at > org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:32) > at > org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:39) > at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327) > at > org.apache.spark.sql.execution.aggregate.TungstenAggregationIterator.processInputs(TungstenAggregationIterator.scala:504) > at > org.apache.spark.sql.execution.aggregate.TungstenAggregationIterator.<init>(TungstenAggregationIterator.scala:686) > at > org.apache.spark.sql.execution.aggregate.TungstenAggregate$$anonfun$doExecute$1$$anonfun$2.apply(TungstenAggregate.scala:95) > at > org.apache.spark.sql.execution.aggregate.TungstenAggregate$$anonfun$doExecute$1$$anonfun$2.apply(TungstenAggregate.scala:86) > at > org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$20.apply(RDD.scala:710) > at > org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$20.apply(RDD.scala:710) > at > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38) > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306) > at org.apache.spark.rdd.RDD.iterator(RDD.scala:270) > at > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38) > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306) > at org.apache.spark.rdd.RDD.iterator(RDD.scala:270) > at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66) > at org.apache.spark.scheduler.Task.run(Task.scala:89) > at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:227) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > Caused by: java.io.IOException: Failed to connect to 10-250-20-140:44042 > at > org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:216) > at > org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:167) > at > org.apache.spark.network.netty.NettyBlockTransferService$$anon$1.createAndStart(NettyBlockTransferService.scala:90) > at > org.apache.spark.network.shuffle.RetryingBlockFetcher.fetchAllOutstanding(RetryingBlockFetcher.java:140) > at > org.apache.spark.network.shuffle.RetryingBlockFetcher.access$200(RetryingBlockFetcher.java:43) > at > org.apache.spark.network.shuffle.RetryingBlockFetcher$1.run(RetryingBlockFetcher.java:170) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > ... 3 more > Caused by: java.nio.channels.UnresolvedAddressException > at sun.nio.ch.Net.checkAddress(Net.java:101) > at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:622) > at > io.netty.channel.socket.nio.NioSocketChannel.doConnect(NioSocketChannel.java:209) > at > io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.connect(AbstractNioChannel.java:207) > at > io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1097) > at > io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:471) > at > io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:456) > at > io.netty.channel.ChannelOutboundHandlerAdapter.connect(ChannelOutboundHandlerAdapter.java:47) > at > io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:471) > at > io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:456) > at > io.netty.channel.ChannelDuplexHandler.connect(ChannelDuplexHandler.java:50) > at > io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:471) > at > io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:456) > at > io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:438) > at > io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:908) > at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:203) > at io.netty.bootstrap.Bootstrap$2.run(Bootstrap.java:166) > at > io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357) > at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357) > at > io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111) > ... 1 more > {noformat} > When you look closely you notice that it is trying to connect not through a > correct IP address but the hostname (which is the IP address but with > dashes). Unfortunately the hostname is not valid from another host other than > the one so the other executors cannot talk to this one. > On the executor page (two screenshots) you can see what is happening > (different IP addresses but same behaviour). > !screenshot-1.png! > !screenshot-2.png! > Why is the executor advertised using the hostname in this particular case? Is > it a bug or expected behaviour? This only happens when the executor is on the > same host as the driver. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org