Hello Everyone - I have decommissioned my NN so that only the JobTracker, NameNode and SecondaryNameNodes are running on it now. I would like to thank everyone who helped me to perform this task!
I have just one more issue: The data files created in the Master Node seem to be still there. in /hdfs/data/current Now that this server is not being used as a DataNode, can I safely delete the files under this folder to clear up space? Thanks & regards Arko On Thu, Feb 14, 2013 at 11:48 AM, Arko Provo Mukherjee <arkoprovomukher...@gmail.com> wrote: > Thanks! I have already requested for downtime. Will do the changes soon! > Warm regards > Arko > > On Thu, Feb 14, 2013 at 3:31 AM, <ramon....@accenture.com> wrote: >> Hi Arko. >> >> Only thing you need to do is not running the TaskTracker and DataNode >> demons on your master machine. Ensure you do not have this on your slaves >> file con hadoop's config directory when you start the system. I'm supposing >> you are on Open Source release. For other distributions look at its >> documentation about how to remove those demons from your master node machine. >> >> >> -----Original Message----- >> From: Arko Provo Mukherjee [mailto:arkoprovomukher...@gmail.com] >> Sent: miércoles, 13 de febrero de 2013 20:32 >> To: hdfs-user@hadoop.apache.org >> Subject: Managing space in Master Node >> >> Hello Gurus, >> >> I am managing a Hadoop Cluster to run some experiments. >> >> The issue I am continuously facing is that the Master Node runs out of >> disk space due to logs and data files. >> >> I can monitor and delete log files. However, I cannot delete the HDFS data. >> >> Thus, is there a way to force Hadoop not to save any HDFS data in the >> Master Node? >> >> Then I can use my master to handle the metadata only and store the logs. >> >> Thanks & regards >> Arko >> >> >> This message is for the designated recipient only and may contain >> privileged, proprietary, or otherwise private information. If you have >> received it in error, please notify the sender immediately and delete the >> original. Any other use of the e-mail by you is prohibited. >> >> Where allowed by local law, electronic communications with Accenture and its >> affiliates, including e-mail and instant messaging (including content), may >> be scanned by our systems for the purposes of information security and >> assessment of internal compliance with Accenture policy. >> >> ______________________________________________________________________________________ >> >> www.accenture.com >>
