Knowledge is Power
Are you seeing this ? org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in hadoop/dfs/data: namenode namespaceID = X; datanode namespaceID = Y The fix (in the order) Delete VERSION files in the dfs directory $ find /hadoop/dfs -name VERSION -exec rm -rf “{}”...
Is it 50030 or 50300 for that JobTracker UI? I can never remember! Hadoop’s daemons expose a handful of ports over TCP. Some of these ports are used by Hadoop’s daemons to communicate amongst themselves (to schedule jobs, replicate blocks,...
Source: http://bradhedlund.com/2011/09/10/understanding-hadoop-clusters-and-the-network/ This article is Part 1 in series that will take a closer look at the architecture and methods of a Hadoop cluster, and how it relates to the network and server infrastructure. The content presented here is largely...
From default wine installation I was on 64 bit wine. Due to some requirement had to switch over to 32bit wine arch. Following is what I did as the current user – rm -rf ~/.wine WINEARCH=win32 winecfg ...
Are you seeing – Fatal error: Can’t open and lock privilege tables: Incorrect file format ‘host’ ? Following is what I did – removed mysql-server (#yum remove mysql-*) re-installed mysql-server (#yum install mysql-server) #cd /var/lib/mysql/mysql #rm -rf * #mysql_install_db and then, ...
Error: “Setup was unable to create a new system partition or locate an existing system partition. See the Setup log files for more information” Are you are seeing this error (above) while trying to install Windows 7 from a...
For the impatient Look no where else if you already have nautilus file manager For best view/performance setup nautilus in browser mode [ edit -> preferences -> behavior (tab) -> behavior (section) -> check “Always open in browser windows” ]...
Source: http://blogger-hints-and-tips.blogspot.in/2012/07/close-the-gap-left-when-Bloggers-navBar-is-removed.html You can move the header up to cover over the area where the nav-bar was by adding a CSS rule to your template in the normal way. The rule to add is: #navbar { height: 0px; visibility: hidden; display: none;} Apply...
Index I want to install EPEL repository How to mount ‘ntfs’ partition in CentOS? How do I create CentOS local repository? Create local yum repository Setting up passwordless SSH Install firefox 15 on CentOS Download rpm packages locally to a...
Source: http://www.if-not-true-then-false.com/2011/install-firefox-on-fedora-centos-red-hat-rhel/ Mozilla Firefox 18 is released and this is guide, howto install Firefox 18 on Fedora 18/17/16/15/14, CentOS 6.3/6.2/6.1/6 and Red Hat (RHEL) 6.3/6.2/6.1/6 using YUM. Firefox 10 is currently available on CentOS 6.3/5.9 and Red Hat (RHEL) 6.3/5.9 own repos,...
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