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From Simon McGloin <simonmcgl...@gmail.com>
Subject Re: Problem running the PageRank example in a cluster
Date Mon, 21 Oct 2013 15:06:38 GMT
Hey Andro,
I believe the reason you are seeing this error is due to ports being
blocked by iptables. You need to have port 30000 open for the master on all
machines in your cluster. You also need to open ports 30001 up to the
number of workers you will be running.
So if you are running 10 workers then add the following to
/etc/sysconfig/iptables
-A INPUT -p tcp -m state --state NEW -m tcp --dport 30000:30010 -j ACCEPT
Then restart iptables with:
sudo service iptables restart
I'm new to Giraph too so anyone please correct me if I'm wrong.
Regards,
Simon


On Mon, Oct 21, 2013 at 3:37 PM, Andro Bermúdez Serrano <
andro.bermudez@gmail.com> wrote:

> Hello.
> I am using Giraph 1.0.0 with hadoop 1.2.1. With the pseudo-distributed
> installation of hadoop the execution was succefully. Now I am trying
> to run the same example but in a cluster. So far, I can't continue
> because error in tasks. The exception: java.net.ConnectException. My
> experience in hadoop is almost null.
>
> Thanks.
>
> 2013-10-21 10:11:58,152 INFO org.apache.hadoop.util.NativeCodeLoader:
> Loaded the native-hadoop library
> 2013-10-21 10:11:58,743 WARN
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi
> already exists!
> 2013-10-21 10:11:59,431 INFO org.apache.hadoop.util.ProcessTree:
> setsid exited with exit code 0
> 2013-10-21 10:11:59,491 INFO org.apache.hadoop.mapred.Task:  Using
> ResourceCalculatorPlugin :
> org.apache.hadoop.util.LinuxResourceCalculatorPlugin@34bb5def
> 2013-10-21 10:11:59,632 INFO org.apache.hadoop.mapred.MapTask:
> Processing split: 'org.apache.giraph.bsp.BspInputSplit, index=-1,
> num=-1
> 2013-10-21 10:11:59,778 INFO org.apache.giraph.graph.GraphTaskManager:
> setup: Log level remains at info
> 2013-10-21 10:12:00,426 INFO org.apache.giraph.graph.GraphTaskManager:
> Distributed cache is empty. Assuming fatjar.
> 2013-10-21 10:12:00,454 INFO org.apache.giraph.graph.GraphTaskManager:
> setup: classpath @
>
> /app/hadoop/tmp/mapred/local/taskTracker/hadoop-user/jobcache/job_201310210926_0004/jars/job.jar
> for job Giraph: org.apache.giraph.examples.SimplePageRankVertex
> 2013-10-21 10:12:03,054 INFO org.apache.giraph.zk.ZooKeeperManager:
> createCandidateStamp: Made the directory
> _bsp/_defaultZkManagerDir/job_201310210926_0004
> 2013-10-21 10:12:03,564 INFO org.apache.giraph.zk.ZooKeeperManager:
> createCandidateStamp: Creating my filestamp
> _bsp/_defaultZkManagerDir/job_201310210926_0004/_task/hdnode01 0
> 2013-10-21 10:12:06,635 INFO org.apache.giraph.zk.ZooKeeperManager:
> getZooKeeperServerList: Got [hdnode02, hdnode01] 2 hosts from 2
> candidates when 1 required (polling period is 3000) on attempt 0
> 2013-10-21 10:12:06,635 INFO org.apache.giraph.zk.ZooKeeperManager:
> createZooKeeperServerList: Creating the final ZooKeeper file
> '_bsp/_defaultZkManagerDir/job_201310210926_0004/zkServerList_hdnode02
> 1 '
> 2013-10-21 10:12:10,754 INFO org.apache.giraph.zk.ZooKeeperManager:
> getZooKeeperServerList: For task 0, got file 'zkServerList_hdnode02 1
> ' (polling period is 3000)
> 2013-10-21 10:12:10,754 INFO org.apache.giraph.zk.ZooKeeperManager:
> getZooKeeperServerList: Found [hdnode02, 1] 2 hosts in filename
> 'zkServerList_hdnode02 1 '
> 2013-10-21 10:12:10,757 INFO org.apache.giraph.zk.ZooKeeperManager:
> onlineZooKeeperSErvers: Empty directory
> _bsp/_defaultZkManagerDir/job_201310210926_0004/_zkServer, waiting
> 3000 msecs.
> 2013-10-21 10:12:13,760 INFO org.apache.giraph.zk.ZooKeeperManager:
> onlineZooKeeperServers: Got [hdnode02] 1 hosts from 1 ready servers
> when 1 required (polling period is 3000) on attempt 1
> 2013-10-21 10:12:13,783 INFO org.apache.giraph.graph.GraphTaskManager:
> setup: Starting up BspServiceWorker...
> 2013-10-21 10:12:13,811 INFO org.apache.giraph.bsp.BspService:
> BspService: Connecting to ZooKeeper with job job_201310210926_0004, 0
> on hdnode02:22181
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:zookeeper.version=3.3.3-1073969, built on 02/23/2011 22:27
> GMT
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:host.name=hdnode01
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:java.version=1.7.0_25
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:java.vendor=Oracle Corporation
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:java.home=/usr/lib/jvm/java-7-openjdk-amd64/jre
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
>
> environment:java.class.path=/app/hadoop/tmp/mapred/local/taskTracker/hadoop-user/jobcache/job_201310210926_0004/jars/classes:/app/hadoop/tmp/mapred/local/taskTracker/hadoop-user/jobcache/job_201310210926_0004/jars:/app/hadoop/tmp/mapred/local/taskTracker/hadoop-user/jobcache/job_201310210926_0004/attempt_201310210926_0004_m_000000_0/work:/usr/local/hadoop/libexec/../conf:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar:/usr/local/hadoop/libexec/..:/usr/local/hadoop/libexec/../hadoop-core-1.2.1.jar:/usr/local/hadoop/libexec/../lib/asm-3.2.jar:/usr/local/hadoop/libexec/../lib/aspectjrt-1.6.11.jar:/usr/local/hadoop/libexec/../lib/aspectjtools-1.6.11.jar:/usr/local/hadoop/libexec/../lib/commons-beanutils-1.7.0.jar:/usr/local/hadoop/libexec/../lib/commons-beanutils-core-1.8.0.jar:/usr/local/hadoop/libexec/../lib/commons-cli-1.2.jar:/usr/local/hadoop/libexec/../lib/commons-codec-1.4.jar:/usr/local/hadoop/libexec/../lib/commons-collections-3.2.1.jar:/usr/local/hadoop/libexec/../lib/commons-configuration-1.6.jar:/usr/local/hadoop/libexec/../lib/commons-daemon-1.0.1.jar:/usr/local/hadoop/libexec/../lib/commons-digester-1.8.jar:/usr/local/hadoop/libexec/../lib/commons-el-1.0.jar:/usr/local/hadoop/libexec/../lib/commons-httpclient-3.0.1.jar:/usr/local/hadoop/libexec/../lib/commons-io-2.1.jar:/usr/local/hadoop/libexec/../lib/commons-lang-2.4.jar:/usr/local/hadoop/libexec/../lib/commons-logging-1.1.1.jar:/usr/local/hadoop/libexec/../lib/commons-logging-api-1.0.4.jar:/usr/local/hadoop/libexec/../lib/commons-math-2.1.jar:/usr/local/hadoop/libexec/../lib/commons-net-3.1.jar:/usr/local/hadoop/libexec/../lib/core-3.1.1.jar:/usr/local/hadoop/libexec/../lib/hadoop-capacity-scheduler-1.2.1.jar:/usr/local/hadoop/libexec/../lib/hadoop-fairscheduler-1.2.1.jar:/usr/local/hadoop/libexec/../lib/hadoop-thriftfs-1.2.1.jar:/usr/local/hadoop/libexec/../lib/hsqldb-1.8.0.10.jar:/usr/local/hadoop/libexec/../lib/jackson-core-asl-1.8.8.jar:/usr/local/hadoop/libexec/../lib/jackson-mapper-asl-1.8.8.jar:/usr/local/hadoop/libexec/../lib/jasper-compiler-5.5.12.jar:/usr/local/hadoop/libexec/../lib/jasper-runtime-5.5.12.jar:/usr/local/hadoop/libexec/../lib/jdeb-0.8.jar:/usr/local/hadoop/libexec/../lib/jersey-core-1.8.jar:/usr/local/hadoop/libexec/../lib/jersey-json-1.8.jar:/usr/local/hadoop/libexec/../lib/jersey-server-1.8.jar:/usr/local/hadoop/libexec/../lib/jets3t-0.6.1.jar:/usr/local/hadoop/libexec/../lib/jetty-6.1.26.jar:/usr/local/hadoop/libexec/../lib/jetty-util-6.1.26.jar:/usr/local/hadoop/libexec/../lib/jsch-0.1.42.jar:/usr/local/hadoop/libexec/../lib/junit-4.5.jar:/usr/local/hadoop/libexec/../lib/kfs-0.2.2.jar:/usr/local/hadoop/libexec/../lib/log4j-1.2.15.jar:/usr/local/hadoop/libexec/../lib/mockito-all-1.8.5.jar:/usr/local/hadoop/libexec/../lib/oro-2.0.8.jar:/usr/local/hadoop/libexec/../lib/servlet-api-2.5-20081211.jar:/usr/local/hadoop/libexec/../lib/slf4j-api-1.4.3.jar:/usr/local/hadoop/libexec/../lib/slf4j-log4j12-1.4.3.jar:/usr/local/hadoop/libexec/../lib/xmlenc-0.52.jar:/usr/local/hadoop/libexec/../lib/jsp-2.1/jsp-2.1.jar:/usr/local/hadoop/libexec/../lib/jsp-2.1/jsp-api-2.1.jar
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
>
> environment:java.library.path=/usr/local/hadoop/libexec/../lib/native/Linux-amd64-64:/app/hadoop/tmp/mapred/local/taskTracker/hadoop-user/jobcache/job_201310210926_0004/attempt_201310210926_0004_m_000000_0/work
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
>
> environment:java.io.tmpdir=/app/hadoop/tmp/mapred/local/taskTracker/hadoop-user/jobcache/job_201310210926_0004/attempt_201310210926_0004_m_000000_0/work/tmp
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:java.compiler=<NA>
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:os.name=Linux
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:os.arch=amd64
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:os.version=3.8.0-32-generic
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:user.name=hadoop-user
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
> environment:user.home=/home/hadoop-user
> 2013-10-21 10:12:13,820 INFO org.apache.zookeeper.ZooKeeper: Client
>
> environment:user.dir=/app/hadoop/tmp/mapred/local/taskTracker/hadoop-user/jobcache/job_201310210926_0004/attempt_201310210926_0004_m_000000_0/work
> 2013-10-21 10:12:13,821 INFO org.apache.zookeeper.ZooKeeper:
> Initiating client connection, connectString=hdnode02:22181
> sessionTimeout=60000
> watcher=org.apache.giraph.worker.BspServiceWorker@54bf0a6b
> 2013-10-21 10:12:13,861 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server hdnode02/172.24.10.72:22181
> 2013-10-21 10:12:13,870 INFO org.apache.zookeeper.ClientCnxn: Socket
> connection established to hdnode02/172.24.10.72:22181, initiating
> session
> 2013-10-21 10:12:13,999 INFO org.apache.zookeeper.ClientCnxn: Session
> establishment complete on server hdnode02/172.24.10.72:22181,
> sessionid = 0x141db5bd0d70000, negotiated timeout = 600000
> 2013-10-21 10:12:14,001 INFO org.apache.giraph.bsp.BspService:
> process: Asynchronous connection complete.
> 2013-10-21 10:12:14,009 INFO
> org.apache.giraph.comm.netty.NettyWorkerServer:
> createMessageStoreFactory: Using ByteArrayMessagesPerVertexStore since
> there is no combiner
> 2013-10-21 10:12:14,216 INFO org.apache.giraph.comm.netty.NettyServer:
> NettyServer: Using execution handler with 8 threads after
> requestFrameDecoder.
> 2013-10-21 10:12:14,369 INFO org.apache.giraph.comm.netty.NettyServer:
> start: Started server communication server:
> hdnode01/172.24.9.185:30000 with up to 16 threads on bind attempt 0
> with sendBufferSize = 32768 receiveBufferSize = 524288 backlog = 1
> 2013-10-21 10:12:14,376 INFO org.apache.giraph.comm.netty.NettyClient:
> NettyClient: Using execution handler with 8 threads after
> requestEncoder.
> 2013-10-21 10:12:14,388 INFO org.apache.giraph.graph.GraphTaskManager:
> setup: Registering health of this worker...
> 2013-10-21 10:12:14,637 INFO org.apache.giraph.bsp.BspService:
> process: applicationAttemptChanged signaled
> 2013-10-21 10:12:14,788 WARN org.apache.giraph.bsp.BspService:
> process: Unknown and unprocessed event
>
> (path=/_hadoopBsp/job_201310210926_0004/_applicationAttemptsDir/0/_superstepDir,
> type=NodeChildrenChanged, state=SyncConnected)
> 2013-10-21 10:12:14,811 INFO
> org.apache.giraph.worker.BspServiceWorker: registerHealth: Created my
> health node for attempt=0, superstep=-1 with
>
> /_hadoopBsp/job_201310210926_0004/_applicationAttemptsDir/0/_superstepDir/-1/_workerHealthyDir/hdnode01_0
> and workerInfo= Worker(hostname=hdnode01, MRtaskID=0, port=30000)
> 2013-10-21 10:12:15,568 INFO org.apache.giraph.comm.netty.NettyServer:
> start: Using Netty without authentication.
> 2013-10-21 10:12:15,637 INFO org.apache.giraph.bsp.BspService:
> process: partitionAssignmentsReadyChanged (partitions are assigned)
> 2013-10-21 10:12:15,654 INFO
> org.apache.giraph.worker.BspServiceWorker: startSuperstep:
> Master(hostname=hdnode02, MRtaskID=1, port=30001)
> 2013-10-21 10:12:15,654 INFO
> org.apache.giraph.worker.BspServiceWorker: startSuperstep: Ready for
> computation on superstep -1 since worker selection and vertex range
> assignments are done in
>
> /_hadoopBsp/job_201310210926_0004/_applicationAttemptsDir/0/_superstepDir/-1/_addressesAndPartitions
> 2013-10-21 10:12:15,656 INFO org.apache.giraph.comm.netty.NettyClient:
> Using Netty without authentication.
> 2013-10-21 10:12:15,671 WARN org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Future failed to connect with
> hdnode02/172.24.10.72:30001 with 0 failures because of
> java.net.ConnectException: Connection refused
> 2013-10-21 10:12:15,671 INFO org.apache.giraph.comm.netty.NettyClient:
> Using Netty without authentication.
> 2013-10-21 10:12:15,672 INFO org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Successfully added 0 connections, (0 total
> connected) 1 failed, 1 failures total.
> 2013-10-21 10:12:15,677 WARN org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Future failed to connect with
> hdnode02/172.24.10.72:30001 with 1 failures because of
> java.net.ConnectException: Connection refused
> 2013-10-21 10:12:15,677 INFO org.apache.giraph.comm.netty.NettyClient:
> Using Netty without authentication.
> 2013-10-21 10:12:15,677 WARN
> org.apache.giraph.comm.netty.handler.ResponseClientHandler:
> exceptionCaught: Channel failed with remote address null
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:708)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.connect(NioClientSocketPipelineSink.java:404)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:366)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> 2013-10-21 10:12:15,681 INFO org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Successfully added 0 connections, (0 total
> connected) 1 failed, 2 failures total.
> 2013-10-21 10:12:15,682 WARN org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Future failed to connect with
> hdnode02/172.24.10.72:30001 with 2 failures because of
> java.net.ConnectException: Connection refused
> 2013-10-21 10:12:15,682 INFO org.apache.giraph.comm.netty.NettyClient:
> Using Netty without authentication.
> 2013-10-21 10:12:15,684 WARN
> org.apache.giraph.comm.netty.handler.ResponseClientHandler:
> exceptionCaught: Channel failed with remote address null
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:708)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.connect(NioClientSocketPipelineSink.java:404)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:366)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> 2013-10-21 10:12:15,686 WARN
> org.apache.giraph.comm.netty.handler.ResponseClientHandler:
> exceptionCaught: Channel failed with remote address null
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:708)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.connect(NioClientSocketPipelineSink.java:404)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:366)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> 2013-10-21 10:12:15,687 WARN
> org.apache.giraph.comm.netty.handler.ResponseClientHandler:
> exceptionCaught: Channel failed with remote address null
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:708)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.connect(NioClientSocketPipelineSink.java:404)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:366)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> 2013-10-21 10:12:15,686 INFO org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Successfully added 0 connections, (0 total
> connected) 1 failed, 3 failures total.
> 2013-10-21 10:12:15,688 WARN org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Future failed to connect with
> hdnode02/172.24.10.72:30001 with 3 failures because of
> java.net.ConnectException: Connection refused
> 2013-10-21 10:12:15,688 INFO org.apache.giraph.comm.netty.NettyClient:
> Using Netty without authentication.
> 2013-10-21 10:12:15,688 INFO org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Successfully added 0 connections, (0 total
> connected) 1 failed, 4 failures total.
> 2013-10-21 10:12:15,689 WARN org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Future failed to connect with
> hdnode02/172.24.10.72:30001 with 4 failures because of
> java.net.ConnectException: Connection refused
> 2013-10-21 10:12:15,689 INFO org.apache.giraph.comm.netty.NettyClient:
> Using Netty without authentication.
> 2013-10-21 10:12:15,690 WARN
> org.apache.giraph.comm.netty.handler.ResponseClientHandler:
> exceptionCaught: Channel failed with remote address null
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:708)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.connect(NioClientSocketPipelineSink.java:404)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:366)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> 2013-10-21 10:12:15,690 INFO org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Successfully added 0 connections, (0 total
> connected) 1 failed, 5 failures total.
> 2013-10-21 10:12:15,692 WARN org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Future failed to connect with
> hdnode02/172.24.10.72:30001 with 5 failures because of
> java.net.ConnectException: Connection refused
> 2013-10-21 10:12:15,692 INFO org.apache.giraph.comm.netty.NettyClient:
> Using Netty without authentication.
> 2013-10-21 10:12:15,692 WARN
> org.apache.giraph.comm.netty.handler.ResponseClientHandler:
> exceptionCaught: Channel failed with remote address null
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:708)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.connect(NioClientSocketPipelineSink.java:404)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:366)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> 2013-10-21 10:12:15,693 INFO org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Successfully added 0 connections, (0 total
> connected) 1 failed, 6 failures total.
> 2013-10-21 10:12:15,693 WARN org.apache.giraph.comm.netty.NettyClient:
> connectAllAddresses: Future failed to connect with
> hdnode02/172.24.10.72:30001 with 6 failures because of
> java.net.ConnectException: Connection refused
> 2013-10-21 10:12:15,693 INFO org.apache.giraph.comm.netty.NettyClient:
> Using Netty without authentication.
> 2013-10-21 10:12:15,694 WARN
> org.apache.giraph.comm.netty.handler.ResponseClientHandler:
> exceptionCaught: Channel failed with remote address null
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:708)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.connect(NioClientSocketPipelineSink.java:404)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:366)
>         at
> org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
>

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