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From "Ott, Charles H." <>
Subject RE: accumulo startup issue: Accumulo not initialized, there is no instance id at /accumulo/instance_id
Date Thu, 16 Jan 2014 20:06:18 GMT
Sure! I’d like to let this sit on the mailing list for a day or so and get some feedback.
 Then I could polish it up for documentation purposes.  


Email me directl, any kind of template, format, or additional thoughts you have in mind so
I don’t get too far off base. 




From: []
On Behalf Of Sean Busbey
Sent: Thursday, January 16, 2014 3:00 PM
To: Accumulo User List
Subject: Re: accumulo startup issue: Accumulo not initialized, there is no instance id at


Thanks for the overview Charles!  Any chance I can convince you to polish this up a little
and add it to our user documentation as a quickstart guide?


(Notes inline below)


On Thu, Jan 16, 2014 at 1:50 PM, Ott, Charles H. <> wrote:



Not advocating this is the best approach, just what I’m currently doing, put this together
pretty quick, but it should be mostly complete for settting up accumulo on cdh hdfs/zk




echo "Increasing Swapiness Factor to limit use of swap space."

echo "# swappiness for accumulo" >> /etc/sysctl.conf

echo "vm.swappiness = 10" >> /etc/sysctl.conf



You should set vm.swappiness to 0. Both Hadoop and Accumulo recommend this.





























	    <description>Classpaths that accumulo checks for updates and class files.

	      When using the Security Manager, please remove the ".../target/classes/" values.





This will give you some warnings about multiple slf4j binaries on CDH4.4.0+ . You can fix
it by making sure you only match jars with a version number.


See an example[1].



	then of course, always run your Accumulo binaries/scripts using the HDFS account.  I’m
sure I’m missing a few steps here and there… 



You should avoid running Accumulo as the hdfs super user, both as a matter of proper separation
of concerns and as a practical need if you are going to run Accumulo in a production environment
with multiple HDFS users.





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