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From Rachana Srivastava <Rachana.Srivast...@markmonitor.com>
Subject Number of tasks on executors become negative after executor failures
Date Mon, 15 Aug 2016 19:13:58 GMT
Summary:
I am running Spark 1.5 on CDH5.5.1.  Under extreme load intermittently I am getting this connection
failure exception and later negative executor in the Spark UI.

Exception:
TRACE: org.apache.hadoop.hbase.ipc.AbstractRpcClient - Call: Multi, callTime: 76ms
INFO : org.apache.spark.network.client.TransportClientFactory - Found inactive connection
to xxxx/xxx.xxx.xxx.xxxx, creating a new one.
ERROR: org.apache.spark.network.shuffle.RetryingBlockFetcher - Exception while beginning fetch
of 1 outstanding blocks (after 1 retries)
java.io.IOException: Failed to connect to xxxx/xxx.xxx.xxx.xxxx
                at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:193)
                at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:156)
                at org.apache.spark.network.netty.NettyBlockTransferService$$anon$1.createAndStart(NettyBlockTransferService.scala:88)
                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:471)
                at java.util.concurrent.FutureTask.run(FutureTask.java:262)
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
                at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.ConnectException: Connection refused: xxxx/xxx.xxx.xxx.xxxx
                at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
                at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
                at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:224)
                at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:289)
                at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
                at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
                at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
                at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
                at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
                ... 1 more


Related Defects:
https://issues.apache.org/jira/browse/SPARK-2319
https://issues.apache.org/jira/browse/SPARK-9591


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