Yes I have change the hostname and restarted datanode Sent via Rocket from my HTC
----- Reply message ----- From: "Devaraj k" <devara...@huawei.com> To: "common-user@hadoop.apache.org" <common-user@hadoop.apache.org> Subject: Multiple data node and namenode ? Date: Thu, Jul 25, 2013 1:14 PM I could see two data node's log files. But the modified times for both files are different with the difference as 21 mins. I doubt whether they are really running. By any chance have you updated the host name in the machine and then restarted the data node? Could you check with 'ps -ef | grep datanode' shell command to know how many datanode processes are running at this moment. Thanks Devaraj k -----Original Message----- From: Manish Bhoge [mailto:manishbh...@rocketmail.com] Sent: 25 July 2013 12:56 To: common-user@hadoop.apache.org Subject: Re: Multiple data node and namenode ? Unfortunately, I don't have JPS installed. But as you can see it shows 2 data nodes. hadoop-hdfs-datanode-INBEDU011997A.log 243358 bytes Jul 25, 2013 2:29:15 AM hadoop-hdfs-datanode-myhost-1.log 1893692 bytes Jul 25, 2013 2:50:42 AM is it because i have given 3 directory under dfs-data.dir in hdfs-site.xml? ________________________________ From: Devaraj k <devara...@huawei.com> To: "common-user@hadoop.apache.org" <common-user@hadoop.apache.org> Sent: Thursday, 25 July 2013 12:41 PM Subject: RE: Multiple data node and namenode ? Hi Manish, Can you check how many data node processes are running really in the machine using the command 'jps' or 'ps'. Thanks Devaraj k -----Original Message----- From: Manish Bhoge [mailto:manishbh...@rocketmail.com] Sent: 25 July 2013 12:29 To: common-user@hadoop.apache.org Subject: Multiple data node and namenode ? I am configuring cluster and starting with first machine. So i have configured the core-site, hdfs-site and mapred-site to run hadoop only on 1 machine. But somehow i am getting 2 copies of data node, namenode and secondary namenode. Not able to figure out why ? SecurityAuth-hdfs.audit 0 bytes Jul 17, 2013 4:34:56 AM hadoop-hdfs-datanode-INBEDU011997A.log 243358 bytes Jul 25, 2013 2:29:15 AM hadoop-hdfs-datanode-myhost-1.log 1893692 bytes Jul 25, 2013 2:50:42 AM hadoop-hdfs-namenode-INBEDU011997A.log 19545397 bytes Jul 25, 2013 2:50:40 AM hadoop-hdfs-namenode-myhost-1.log 2438271 bytes Jul 25, 2013 2:48:57 AM hadoop-hdfs-secondarynamenode-INBEDU011997A.log 4061047 bytes Jul 25, 2013 2:30:10 AM hadoop-hdfs-secondarynamenode-myhost-1.log 9707957 bytes Jul 25, 2013 2:46:18 AM
