Re: Error: INFO ipc.Client: Retrying connect to server: /192.168.100.11:8020. Already tried 0 time(s).
This just tells that the service which you are trying to conned is not running on that address or port no. just try netstat -nlrt | grep 8020 and check if it showing something. what i can find out from the error that the server is not running or if it running then its running on some other port -- View this message in context: http://hadoop.6.n7.nabble.com/Error-INFO-ipc-Client-Retrying-connect-to-server-192-168-100-11-8020-Already-tried-0-time-s-tp11885p66957.html Sent from the common-user mailing list archive at Nabble.com.
Retrying connect to server: localhost/127.0.0.1:9000.
I'm plagued with this error: Retrying connect to server: localhost/127.0.0.1:9000. I'm trying to set up hadoop on a new machine, just a basic pseudo-distributed setup. I've done this quite a few times on other machines, but this time I'm kinda stuck. I formatted the namenode without obvious errors and ran start-all.sh with no errors to stdout. However, the logs are full of that error above and if I attempt to access hdfs (ala hadoop fs -ls /) I get that error again. Obviously, my core-site.xml sets fs.default.name to hdfs://localhost:9000. I assume something is wrong with /etc/hosts, but I'm not sure how to fix it. If hostname returns X and hostname -f returns Y, then what are the corresponding entries in /etc/hosts? Thanks for any help. Keith Wiley kwi...@keithwiley.com keithwiley.commusic.keithwiley.com I used to be with it, but then they changed what it was. Now, what I'm with isn't it, and what's it seems weird and scary to me. -- Abe (Grandpa) Simpson
Re: Retrying connect to server: localhost/127.0.0.1:9000.
Hi Keith, Does ping to localhost returns a reply? Try telneting to localhost 9000. Thanks, Anil On Fri, Jul 27, 2012 at 11:22 AM, Keith Wiley kwi...@keithwiley.com wrote: I'm plagued with this error: Retrying connect to server: localhost/127.0.0.1:9000. I'm trying to set up hadoop on a new machine, just a basic pseudo-distributed setup. I've done this quite a few times on other machines, but this time I'm kinda stuck. I formatted the namenode without obvious errors and ran start-all.sh with no errors to stdout. However, the logs are full of that error above and if I attempt to access hdfs (ala hadoop fs -ls /) I get that error again. Obviously, my core-site.xml sets fs.default.name to hdfs://localhost:9000. I assume something is wrong with /etc/hosts, but I'm not sure how to fix it. If hostname returns X and hostname -f returns Y, then what are the corresponding entries in /etc/hosts? Thanks for any help. Keith Wiley kwi...@keithwiley.com keithwiley.com music.keithwiley.com I used to be with it, but then they changed what it was. Now, what I'm with isn't it, and what's it seems weird and scary to me. -- Abe (Grandpa) Simpson -- Thanks Regards, Anil Gupta
Re: Retrying connect to server: localhost/127.0.0.1:9000.
Hi Keith Your NameNode is not up still. What does the NN logs say? Regards Bejoy KS Sent from handheld, please excuse typos. -Original Message- From: anil gupta anilgupt...@gmail.com Date: Fri, 27 Jul 2012 11:30:57 To: common-user@hadoop.apache.org Reply-To: common-user@hadoop.apache.org Subject: Re: Retrying connect to server: localhost/127.0.0.1:9000. Hi Keith, Does ping to localhost returns a reply? Try telneting to localhost 9000. Thanks, Anil On Fri, Jul 27, 2012 at 11:22 AM, Keith Wiley kwi...@keithwiley.com wrote: I'm plagued with this error: Retrying connect to server: localhost/127.0.0.1:9000. I'm trying to set up hadoop on a new machine, just a basic pseudo-distributed setup. I've done this quite a few times on other machines, but this time I'm kinda stuck. I formatted the namenode without obvious errors and ran start-all.sh with no errors to stdout. However, the logs are full of that error above and if I attempt to access hdfs (ala hadoop fs -ls /) I get that error again. Obviously, my core-site.xml sets fs.default.name to hdfs://localhost:9000. I assume something is wrong with /etc/hosts, but I'm not sure how to fix it. If hostname returns X and hostname -f returns Y, then what are the corresponding entries in /etc/hosts? Thanks for any help. Keith Wiley kwi...@keithwiley.com keithwiley.com music.keithwiley.com I used to be with it, but then they changed what it was. Now, what I'm with isn't it, and what's it seems weird and scary to me. -- Abe (Grandpa) Simpson -- Thanks Regards, Anil Gupta
Re: Retrying connect to server: localhost/127.0.0.1:9000.
I got it. The hadoop installation had been done by root (I can't claim credit for that thankfully), and when I chowned everything to my account, I missed a few directories. Filling in those blanks made it start working. On Jul 27, 2012, at 11:30 , anil gupta wrote: Hi Keith, Does ping to localhost returns a reply? Try telneting to localhost 9000. Thanks, Anil On Fri, Jul 27, 2012 at 11:22 AM, Keith Wiley kwi...@keithwiley.com wrote: I'm plagued with this error: Retrying connect to server: localhost/127.0.0.1:9000. I'm trying to set up hadoop on a new machine, just a basic pseudo-distributed setup. I've done this quite a few times on other machines, but this time I'm kinda stuck. I formatted the namenode without obvious errors and ran start-all.sh with no errors to stdout. However, the logs are full of that error above and if I attempt to access hdfs (ala hadoop fs -ls /) I get that error again. Obviously, my core-site.xml sets fs.default.name to hdfs://localhost:9000. I assume something is wrong with /etc/hosts, but I'm not sure how to fix it. If hostname returns X and hostname -f returns Y, then what are the corresponding entries in /etc/hosts? Thanks for any help. Keith Wiley kwi...@keithwiley.com keithwiley.commusic.keithwiley.com What I primarily learned in grad school is how much I *don't* know. Consequently, I left grad school with a higher ignorance to knowledge ratio than when I entered. -- Keith Wiley
Re: Retrying connect to server error while configuring hadoop
. 2011-04-08 15:47:47,839 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 0 time(s). 2011-04-08 15:47:48,849 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 1 time(s). 2011-04-08 15:47:49,859 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 2 time(s). 2011-04-08 15:47:50,869 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 3 time(s). 2011-04-08 15:47:51,878 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 4 time(s). 2011-04-08 15:47:52,889 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 5 time(s). 2011-04-08 15:47:53,900 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 6 time(s). 2011-04-08 15:47:54,908 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 7 time(s). 2011-04-08 15:47:55,917 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 8 time(s). 2011-04-08 15:47:56,926 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 9 time(s). 2011-04-08 15:47:56,928 INFO org.apache.hadoop.ipc.RPC: Server at hadoop1/192.168.161.198:8020 not available yet, Z... 2011-04-08 15:47:58,944 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 0 time(s). 2011-04-08 15:47:59,953 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 1 time(s). 2011-04-08 15:48:00,961 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 2 time(s). = Can anyone please help me to understand the problem. Thanks in advance. -- View this message in context: http://old.nabble.com/%22Retrying-connect-to-server%22-error-while-configuring-hadoop-tp31376269p31376269.html Sent from the Hadoop core-user mailing list archive at Nabble.com.
Retrying connect to server error while configuring hadoop
Hello, I am trying to configure Hadoop in fully distributed mode on three virtual Fedora machines. During configuring I am not getting any error. Even when I am executing the script start-dfs.sh, there aren't any error. But practically the namenode isn't able to connect the datanodes. These are the error snippents from the hadoop-root-datanode-hadoop2.log files of both datanodes == STARTUP_MSG: Starting DataNode STARTUP_MSG: host = hadoop2/127.0.0.1 STARTUP_MSG: args = [] STARTUP_MSG: version = 0.20.2-CDH3B4 STARTUP_MSG: build = -r 3aa7c91592ea1c53f3a913a581dbfcdfebe98bfe; compiled by 'root' on Mon Feb 21 17:31:12 EST 2011 / 2011-04-08 15:33:03,537 WARN org.apache.hadoop.util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 2011-04-08 15:33:03,549 INFO org.apache.hadoop.security.UserGroupInformation: JAAS Configuration already set up for Hadoop, not re-installing. 2011-04-08 15:33:03,691 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call to hadoop1/192.168.161.198:8020 failed on local exception: java.io.IOException: Connection reset by peer at org.apache.hadoop.ipc.Client.wrapException(Client.java:1139) at org.apache.hadoop.ipc.Client.call(Client.java:1107) at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226) at $Proxy4.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:398) at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:342) at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:317) at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:297) at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:338) at org.apache.hadoop.hdfs.server.datanode.DataNode.init(DataNode.java:280) at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1527) at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1467) at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1485) at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1610) at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1620) Caused by: java.io.IOException: Connection reset by peer at sun.nio.ch.FileDispatcher.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:202) at sun.nio.ch.IOUtil.read(IOUtil.java:175) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:243) at org.apache.hadoop.net.SocketInputStream$Reader.performIO(SocketInputStream.java:55) at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142) at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:155) at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:128) at java.io.FilterInputStream.read(FilterInputStream.java:116) at org.apache.hadoop.ipc.Client$Connection$PingInputStream.read(Client.java:375) at java.io.BufferedInputStream.fill(BufferedInputStream.java:218) at java.io.BufferedInputStream.read(BufferedInputStream.java:237) at java.io.DataInputStream.readInt(DataInputStream.java:370) at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:812) at org.apache.hadoop.ipc.Client$Connection.run(Client.java:720) 2011-04-08 15:33:03,692 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: / SHUTDOWN_MSG: Shutting down DataNode at hadoop2/127.0.0.1 / 2011-04-08 15:47:46,416 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG: / STARTUP_MSG: Starting DataNode STARTUP_MSG: host = hadoop2/127.0.0.1 STARTUP_MSG: args = [] STARTUP_MSG: version = 0.20.2-CDH3B4 STARTUP_MSG: build = -r 3aa7c91592ea1c53f3a913a581dbfcdfebe98bfe; compiled by 'root' on Mon Feb 21 17:31:12 EST 2011 / 2011-04-08 15:47:46,738 INFO org.apache.hadoop.security.UserGroupInformation: JAAS Configuration already set up for Hadoop, not re-installing. 2011-04-08 15:47:47,839 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 0 time(s). 2011-04-08 15:47:48,849 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoop1/192.168.161.198:8020. Already tried 1 time(s). 2011-04-08 15:47:49,859 INFO org.apache.hadoop.ipc.Client
RE: Retrying connect to server
Hi, I do get this: $ jps 6017 DataNode 5805 NameNode 6234 SecondaryNameNode 6354 Jps What can I do to start JobTracker? Here my config Files: $ cat mapred-site.xml ?xml version=1.0? ?xml-stylesheet type=text/xsl href=configuration.xsl? !-- Put site-specific property overrides in this file. -- configuration property namemapred.job.tracker/name valuelocalhost:9001/value descriptionThe host and port that the MapReduce job tracker runs at./description /property /configuration cat hdfs-site.xml ?xml version=1.0? ?xml-stylesheet type=text/xsl href=configuration.xsl? !-- Put site-specific property overrides in this file. -- configuration property namedfs.replication/name value1/value descriptionThe actual number of replications can be specified when the file is created./description /property /configuration $ cat core-site.xml ?xml version=1.0? ?xml-stylesheet type=text/xsl href=configuration.xsl? !-- Put site-specific property overrides in this file. -- configuration property namefs.default.name/name valuehdfs://localhost:9000/value descriptionThe name of the default file system. A URI whose scheme and authority determine the FileSystem implementation. /description /property /configuration -Original Message- From: James Seigel [mailto:ja...@tynt.com] Sent: Friday, December 31, 2010 4:56 AM To: common-user@hadoop.apache.org Subject: Re: Retrying connect to server Or 3) The configuration (or lack thereof) on the machine you are trying to run this, has no idea where your DFS or JobTracker is :) Cheers James. On 2010-12-30, at 8:53 PM, Adarsh Sharma wrote: Cavus,M.,Fa. Post Direkt wrote: I process this ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount gutenberg gutenberg-output I get this Dıd anyone know why I get this Error? 10/12/30 16:48:59 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 0 time(s). 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 1 time(s). 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 2 time(s). 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 3 time(s). 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 4 time(s). 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 5 time(s). 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 6 time(s). 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 7 time(s). 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 8 time(s). 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 9 time(s). Exception in thread main java.net.ConnectException: Call to localhost/127.0.0.1:9001 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) at org.apache.hadoop.ipc.Client.call(Client.java:908) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) at $Proxy0.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) at org.apache.hadoop.mapreduce.Cluster.init(Cluster.java:70) at org.apache.hadoop.mapreduce.Job.init(Job.java:129) at org.apache.hadoop.mapreduce.Job.init(Job.java:134) at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:192) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:373) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:417) at org.apache.hadoop.ipc.Client$Connection.access
RE: Retrying connect to server
Hi, I've forgotten to start start-mapred.sh Thanks All -Original Message- From: Cavus,M.,Fa. Post Direkt [mailto:m.ca...@postdirekt.de] Sent: Friday, December 31, 2010 10:20 AM To: common-user@hadoop.apache.org Subject: RE: Retrying connect to server Hi, I do get this: $ jps 6017 DataNode 5805 NameNode 6234 SecondaryNameNode 6354 Jps What can I do to start JobTracker? Here my config Files: $ cat mapred-site.xml ?xml version=1.0? ?xml-stylesheet type=text/xsl href=configuration.xsl? !-- Put site-specific property overrides in this file. -- configuration property namemapred.job.tracker/name valuelocalhost:9001/value descriptionThe host and port that the MapReduce job tracker runs at./description /property /configuration cat hdfs-site.xml ?xml version=1.0? ?xml-stylesheet type=text/xsl href=configuration.xsl? !-- Put site-specific property overrides in this file. -- configuration property namedfs.replication/name value1/value descriptionThe actual number of replications can be specified when the file is created./description /property /configuration $ cat core-site.xml ?xml version=1.0? ?xml-stylesheet type=text/xsl href=configuration.xsl? !-- Put site-specific property overrides in this file. -- configuration property namefs.default.name/name valuehdfs://localhost:9000/value descriptionThe name of the default file system. A URI whose scheme and authority determine the FileSystem implementation. /description /property /configuration -Original Message- From: James Seigel [mailto:ja...@tynt.com] Sent: Friday, December 31, 2010 4:56 AM To: common-user@hadoop.apache.org Subject: Re: Retrying connect to server Or 3) The configuration (or lack thereof) on the machine you are trying to run this, has no idea where your DFS or JobTracker is :) Cheers James. On 2010-12-30, at 8:53 PM, Adarsh Sharma wrote: Cavus,M.,Fa. Post Direkt wrote: I process this ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount gutenberg gutenberg-output I get this Dıd anyone know why I get this Error? 10/12/30 16:48:59 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 0 time(s). 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 1 time(s). 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 2 time(s). 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 3 time(s). 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 4 time(s). 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 5 time(s). 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 6 time(s). 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 7 time(s). 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 8 time(s). 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 9 time(s). Exception in thread main java.net.ConnectException: Call to localhost/127.0.0.1:9001 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) at org.apache.hadoop.ipc.Client.call(Client.java:908) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) at $Proxy0.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) at org.apache.hadoop.mapreduce.Cluster.init(Cluster.java:70) at org.apache.hadoop.mapreduce.Job.init(Job.java:129) at org.apache.hadoop.mapreduce.Job.init(Job.java:134) at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:192) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574
Retrying connect to server
I process this ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount gutenberg gutenberg-output I get this Dıd anyone know why I get this Error? 10/12/30 16:48:59 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 0 time(s). 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 1 time(s). 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 2 time(s). 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 3 time(s). 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 4 time(s). 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 5 time(s). 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 6 time(s). 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 7 time(s). 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 8 time(s). 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 9 time(s). Exception in thread main java.net.ConnectException: Call to localhost/127.0.0.1:9001 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) at org.apache.hadoop.ipc.Client.call(Client.java:908) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) at $Proxy0.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) at org.apache.hadoop.mapreduce.Cluster.init(Cluster.java:70) at org.apache.hadoop.mapreduce.Job.init(Job.java:129) at org.apache.hadoop.mapreduce.Job.init(Job.java:134) at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:192) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:373) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:417) at org.apache.hadoop.ipc.Client$Connection.access$1900(Client.java:207) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1025) at org.apache.hadoop.ipc.Client.call(Client.java:885) ... 15 more
Re: Retrying connect to server
Hello Cavus, is your Job Tracker running on localhost? It would be great if you can provide more information about your current Hadoop setup. cheers, esteban. estebangutierrez.com — twitter.com/esteban 2010/12/30 Cavus,M.,Fa. Post Direkt m.ca...@postdirekt.de I process this ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount gutenberg gutenberg-output I get this Dıd anyone know why I get this Error? 10/12/30 16:48:59 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 0 time(s). 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 1 time(s). 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 2 time(s). 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 3 time(s). 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 4 time(s). 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 5 time(s). 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 6 time(s). 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 7 time(s). 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 8 time(s). 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 9 time(s). Exception in thread main java.net.ConnectException: Call to localhost/ 127.0.0.1:9001 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) at org.apache.hadoop.ipc.Client.call(Client.java:908) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) at $Proxy0.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) at org.apache.hadoop.mapreduce.Cluster.init(Cluster.java:70) at org.apache.hadoop.mapreduce.Job.init(Job.java:129) at org.apache.hadoop.mapreduce.Job.init(Job.java:134) at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:192) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:373) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:417) at org.apache.hadoop.ipc.Client$Connection.access$1900(Client.java:207) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1025) at org.apache.hadoop.ipc.Client.call(Client.java:885) ... 15 more
Re: Retrying connect to server
Hi Cavus, Please check that hadoop JobTracker and other daemons are running by typing jps. If you see one of (JobTracker,TaskTracker,namenode,datanode) missing then you need to 'stop-all' then format the namenode and start-all again. Maha On Dec 30, 2010, at 7:52 AM, Cavus,M.,Fa. Post Direkt wrote: I process this ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount gutenberg gutenberg-output I get this Dıd anyone know why I get this Error? 10/12/30 16:48:59 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 0 time(s). 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 1 time(s). 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 2 time(s). 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 3 time(s). 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 4 time(s). 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 5 time(s). 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 6 time(s). 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 7 time(s). 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 8 time(s). 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 9 time(s). Exception in thread main java.net.ConnectException: Call to localhost/127.0.0.1:9001 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) at org.apache.hadoop.ipc.Client.call(Client.java:908) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) at $Proxy0.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) at org.apache.hadoop.mapreduce.Cluster.init(Cluster.java:70) at org.apache.hadoop.mapreduce.Job.init(Job.java:129) at org.apache.hadoop.mapreduce.Job.init(Job.java:134) at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:192) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:373) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:417) at org.apache.hadoop.ipc.Client$Connection.access$1900(Client.java:207) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1025) at org.apache.hadoop.ipc.Client.call(Client.java:885) ... 15 more
Re: Retrying connect to server
make sure your /etc/hosts file contains the correct ip/hostname pair. This is very important 2010/12/30 Cavus,M.,Fa. Post Direkt m.ca...@postdirekt.de I process this ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount gutenberg gutenberg-output I get this Dıd anyone know why I get this Error? 10/12/30 16:48:59 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 0 time(s). 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 1 time(s). 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 2 time(s). 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 3 time(s). 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 4 time(s). 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 5 time(s). 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 6 time(s). 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 7 time(s). 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 8 time(s). 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: localhost/ 127.0.0.1:9001. Already tried 9 time(s). Exception in thread main java.net.ConnectException: Call to localhost/ 127.0.0.1:9001 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) at org.apache.hadoop.ipc.Client.call(Client.java:908) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) at $Proxy0.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) at org.apache.hadoop.mapreduce.Cluster.init(Cluster.java:70) at org.apache.hadoop.mapreduce.Job.init(Job.java:129) at org.apache.hadoop.mapreduce.Job.init(Job.java:134) at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:192) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:373) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:417) at org.apache.hadoop.ipc.Client$Connection.access$1900(Client.java:207) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1025) at org.apache.hadoop.ipc.Client.call(Client.java:885) ... 15 more -- -李平
Re: Retrying connect to server
Cavus,M.,Fa. Post Direkt wrote: I process this ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount gutenberg gutenberg-output I get this Dıd anyone know why I get this Error? 10/12/30 16:48:59 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 0 time(s). 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 1 time(s). 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 2 time(s). 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 3 time(s). 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 4 time(s). 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 5 time(s). 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 6 time(s). 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 7 time(s). 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 8 time(s). 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 9 time(s). Exception in thread main java.net.ConnectException: Call to localhost/127.0.0.1:9001 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) at org.apache.hadoop.ipc.Client.call(Client.java:908) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) at $Proxy0.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) at org.apache.hadoop.mapreduce.Cluster.init(Cluster.java:70) at org.apache.hadoop.mapreduce.Job.init(Job.java:129) at org.apache.hadoop.mapreduce.Job.init(Job.java:134) at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:192) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:373) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:417) at org.apache.hadoop.ipc.Client$Connection.access$1900(Client.java:207) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1025) at org.apache.hadoop.ipc.Client.call(Client.java:885) ... 15 more This is the most common issue occured after configuring Hadoop Cluster. Reason : 1. Your NameNode, JobTracker is not running. Verify through Web UI and jps commands. 2. DNS Resolution. You must have IP hostname enteries if all nodes in /etc/hosts file. Best Regards Adarsh Sharma
Re: Retrying connect to server
Or 3) The configuration (or lack thereof) on the machine you are trying to run this, has no idea where your DFS or JobTracker is :) Cheers James. On 2010-12-30, at 8:53 PM, Adarsh Sharma wrote: Cavus,M.,Fa. Post Direkt wrote: I process this ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount gutenberg gutenberg-output I get this Dıd anyone know why I get this Error? 10/12/30 16:48:59 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 0 time(s). 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 1 time(s). 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 2 time(s). 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 3 time(s). 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 4 time(s). 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 5 time(s). 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 6 time(s). 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 7 time(s). 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 8 time(s). 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:9001. Already tried 9 time(s). Exception in thread main java.net.ConnectException: Call to localhost/127.0.0.1:9001 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) at org.apache.hadoop.ipc.Client.call(Client.java:908) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) at $Proxy0.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) at org.apache.hadoop.mapreduce.Cluster.init(Cluster.java:70) at org.apache.hadoop.mapreduce.Job.init(Job.java:129) at org.apache.hadoop.mapreduce.Job.init(Job.java:134) at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:192) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:373) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:417) at org.apache.hadoop.ipc.Client$Connection.access$1900(Client.java:207) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1025) at org.apache.hadoop.ipc.Client.call(Client.java:885) ... 15 more This is the most common issue occured after configuring Hadoop Cluster. Reason : 1. Your NameNode, JobTracker is not running. Verify through Web UI and jps commands. 2. DNS Resolution. You must have IP hostname enteries if all nodes in /etc/hosts file. Best Regards Adarsh Sharma
Error: INFO ipc.Client: Retrying connect to server: /192.168.100.11:8020. Already tried 0 time(s).
Hi, I am new to Hadoop. I just configured it based on the documentation. While I was running example program wordcount.java, I am getting errors. When I gave command $ /bin/hadoop dfs -mkdir santhosh , I am getting error as 09/10/08 13:30:12 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 0 time(s). 09/10/08 13:30:13 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 1 time(s). 09/10/08 13:30:14 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 2 time(s). 09/10/08 13:30:15 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 3 time(s). 09/10/08 13:30:16 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 4 time(s). 09/10/08 13:30:17 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 5 time(s). 09/10/08 13:30:18 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 6 time(s). 09/10/08 13:30:19 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 7 time(s). 09/10/08 13:30:20 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 8 time(s). 09/10/08 13:30:21 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 9 time(s). Bad connection to FS. command aborted. I can able to ssh to the server without any password. And I didnt get any error while I was formating HDFS using the command $ bin/hadoop namenode -format . Please help me . what should I do now?. Thank you. -- Gandham Santhosh
Re: Error: INFO ipc.Client: Retrying connect to server: /192.168.100.11:8020. Already tried 0 time(s).
Hi Santosh, Check whether all the datanodes are up and running, using the command 'bin/hadoop dfsadmin -report'. On Thu, Oct 8, 2009 at 4:24 AM, santosh gandham santhosh...@gmail.comwrote: Hi, I am new to Hadoop. I just configured it based on the documentation. While I was running example program wordcount.java, I am getting errors. When I gave command $ /bin/hadoop dfs -mkdir santhosh , I am getting error as 09/10/08 13:30:12 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 0 time(s). 09/10/08 13:30:13 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 1 time(s). 09/10/08 13:30:14 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 2 time(s). 09/10/08 13:30:15 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 3 time(s). 09/10/08 13:30:16 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 4 time(s). 09/10/08 13:30:17 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 5 time(s). 09/10/08 13:30:18 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 6 time(s). 09/10/08 13:30:19 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 7 time(s). 09/10/08 13:30:20 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 8 time(s). 09/10/08 13:30:21 INFO ipc.Client: Retrying connect to server: / 192.168.100.11:8020. Already tried 9 time(s). Bad connection to FS. command aborted. I can able to ssh to the server without any password. And I didnt get any error while I was formating HDFS using the command $ bin/hadoop namenode -format . Please help me . what should I do now?. Thank you. -- Gandham Santhosh
