[
https://issues.apache.org/jira/browse/SPARK-23191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16829272#comment-16829272
]
wuyi commented on SPARK-23191:
------------------------------
[~cloud_fan] Ok, I'll have a deep look after 5.1 holiday.
> Workers registration failes in case of network drop
> ---------------------------------------------------
>
> Key: SPARK-23191
> URL: https://issues.apache.org/jira/browse/SPARK-23191
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.6.3, 2.2.1, 2.3.0
> Environment: OS:- Centos 6.9(64 bit)
>
> Reporter: Neeraj Gupta
> Priority: Critical
>
> We have a 3 node cluster. We were facing issues of multiple driver running in
> some scenario in production.
> On further investigation we were able to reproduce iin both 1.6.3 and 2.2.1
> versions the scenario with following steps:-
> # Setup a 3 node cluster. Start master and slaves.
> # On any node where the worker process is running block the connections on
> port 7077 using iptables.
> {code:java}
> iptables -A OUTPUT -p tcp --dport 7077 -j DROP
> {code}
> # After about 10-15 secs we get the error on node that it is unable to
> connect to master.
> {code:java}
> 2018-01-23 12:08:51,639 [rpc-client-1-1] WARN
> org.apache.spark.network.server.TransportChannelHandler - Exception in
> connection from <servername>
> java.io.IOException: Connection timed out
> at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
> at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
> at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
> at sun.nio.ch.IOUtil.read(IOUtil.java:192)
> at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
> at
> io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:221)
> at
> io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:899)
> at
> io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:275)
> at
> io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:119)
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:643)
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:566)
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:480)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
> at
> io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
> at java.lang.Thread.run(Thread.java:745)
> 2018-01-23 12:08:51,647 [dispatcher-event-loop-0] ERROR
> org.apache.spark.deploy.worker.Worker - Connection to master failed! Waiting
> for master to reconnect...
> 2018-01-23 12:08:51,647 [dispatcher-event-loop-0] ERROR
> org.apache.spark.deploy.worker.Worker - Connection to master failed! Waiting
> for master to reconnect...
> {code}
> # Once we get this exception we renable the connections to port 7077 using
> {code:java}
> iptables -D OUTPUT -p tcp --dport 7077 -j DROP
> {code}
> # Worker tries to register again with master but is unable to do so. It
> gives following error
> {code:java}
> 2018-01-23 12:08:58,657 [worker-register-master-threadpool-2] WARN
> org.apache.spark.deploy.worker.Worker - Failed to connect to master
> <servername>:7077
> org.apache.spark.SparkException: Exception thrown in awaitResult:
> at
> org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205)
> at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcTimeout.scala:75)
> at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:100)
> at org.apache.spark.rpc.RpcEnv.setupEndpointRef(RpcEnv.scala:108)
> at
> org.apache.spark.deploy.worker.Worker$$anonfun$org$apache$spark$deploy$worker$Worker$$tryRegisterAllMasters$1$$anon$1.run(Worker.scala:241)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.io.IOException: Failed to connect to <servername>:7077
> at
> org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:232)
> at
> org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:182)
> at
> org.apache.spark.rpc.netty.NettyRpcEnv.createClient(NettyRpcEnv.scala:197)
> at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:194)
> at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:190)
> ... 4 more
> Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection timed out: <servername>:7077
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
> at
> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:257)
> at
> io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:291)
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:631)
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:566)
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:480)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
> at
> io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
> ... 1 more
> 2018-01-23 12:09:03,705 [dispatcher-event-loop-5] ERROR
> org.apache.spark.deploy.worker.Worker - Worker registration failed: Duplicate
> worker ID
> 2018-01-23 12:09:03,705 [dispatcher-event-loop-5] ERROR
> org.apache.spark.deploy.worker.Worker - Worker registration failed: Duplicate
> worker ID{code}
> # The worker state is changed to DEAD in spark UI. As a result of which
> duplicate driver is launched.
--
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
