Change the permissions of /SD1/hadoop_data to 755 and restart the process. Warm Regards, Tariq cloudfront.blogspot.com
On Fri, Jun 14, 2013 at 11:10 PM, Raj Hadoop <hadoop...@yahoo.com> wrote: > I have modified dfs.data.dir from the default value to another value which > is outside 'HADOOP_HOME' and it is >/SD1/hadoop_data. > > <property> > <name>dfs.data.dir</name> > <value>/SD1/hadoop_data</value> > <description>Where DataNodes store their blocks</description> > </property> > > My data node is not starting after the above change. Can anyone tell whats > the issue? > > *From:* Sandeep L <sandeepvre...@outlook.com> > *To:* "user@hadoop.apache.org" <user@hadoop.apache.org> > *Sent:* Wednesday, June 12, 2013 1:48 AM > *Subject:* RE: HDFS to a different location other than HADOOP HOME > ** > Instead of using *${hadoop.tmp.dir}/dfs/data* you give multiple > directories with absolute paths. > Just try as follows: > <property> > <name>hadoop.tmp.dir</name> > <value>/home1/user1/dir1,/home2/user2/dir2</value> > </property> > This will allow HDFS to write data into all specified directories. > ** > From: donta...@gmail.com**Date: Tue, 11 Jun 2013 23:14:08 +0530**Subject: > Re: HDFS to a different location other than HADOOP HOME**To: > user@hadoop.apache.org > **** > Thank you Pramod and Shahab. > ** > Warm Regards, > Tariq > cloudfront.blogspot.com > **** > On Tue, Jun 11, 2013 at 11:03 PM, Shahab Yunus <shahab.yu...@gmail.com>wrote: > ** > > http://hadoop.apache.org/docs/stable/hdfs-default.html** > dfs.data.dir ${hadoop.tmp.dir}/dfs/data Determines where on the local > filesystem an DFS data node should store its blocks. If this is a > comma-delimited list of directories, then data will be stored in all named > directories, typically on different devices. Directories that do not exist > are ignored. > **** > On Tue, Jun 11, 2013 at 1:08 PM, Raj Hadoop <hadoop...@yahoo.com> wrote:** > > Hi Tariq, > > What is the default value of dfs.data.dir? My hdfs-site.xml doesnt have > this value defined. So what is the default value? > > Thanks, > Raj > ** > *From:* Mohammad Tariq <donta...@gmail.com> > *To:* "user@hadoop.apache.org" <user@hadoop.apache.org>; Raj Hadoop < > hadoop...@yahoo.com> > *Sent:* Tuesday, June 11, 2013 12:49 PM > *Subject:* Re: HDFS to a different location other than HADOOP HOME > ** > Hello Raj, > ** > Although the way which Mustaqeem has told is correct, there is more > appropriate way to do this. Add the "dfs.data.dir" property in your > hdfs-site.xml and give the "path you want to use for HDFS data storage" as > its value. The directory pointed by hadoop.tmp.dir also contains the > metadata and some other temporary files, so it's always better to have a > dedicated location to store the actual HDFS data. > ** > Warm Regards, > Tariq > cloudfront.blogspot.com** > **** > On Tue, Jun 11, 2013 at 8:12 PM, Raj Hadoop <hadoop...@yahoo.com> wrote:** > > > Thanks Mustaqeem. > > hadoop.tmp.dir - Can this store HDFS files? I mean - is there any > difference in files from the one we create under HADOOP_HOME. > > > ** > *From:* Mohammad Mustaqeem <3m.mustaq...@gmail.com> > *To:* user <user@hadoop.apache.org>; Raj Hadoop <hadoop...@yahoo.com> > *Sent:* Tuesday, June 11, 2013 10:28 AM > *Subject:* Re: HDFS to a different location other than HADOOP HOME > ** > You can mentioned the "hadoop.tmp.dir" property in the core-site.xml as - > <property> > <name>hadoop.tmp.dir</name> > <value>/app/software/app1</value> > </property> > "/app/software/app1" will be used as location for storing the hdfs files. > ** > **** > On Tue, Jun 11, 2013 at 7:52 PM, Raj Hadoop <hadoop...@yahoo.com> wrote:** > > Hi, > > I have a one node Hadoop cluster for my POC. The HADOOP_HOME is under a > directory > > /usr/home/hadoop > > I dont have much space on /usr and want to use other accounts/applications > storage which are located at /app/software/app1 etc., > > How can I use the /app/software/app1 location for my HDFS files and > storage. Is it possible? Please advise. > > Thanks, > Raj > > **** > ** > -- > *With regards ---*** > *Mohammad Mustaqeem*, > M.Tech (CSE) > MNNIT Allahabad > 9026604270 > **** > > > ** > **** > > ** > > ** > **** >