Comments for Cognizant Transmutation

Comment on Hadoop, HDFS and Hbase on Ubuntu & Macintosh Leopard by swati verma

swati verma — Sat, 18 Jan 2014 15:16:50 +0000

I am new to HBASE, and while trying to install the same on Ubuntu system, I am facing some problem.

Below is the error log from Zookeeper log file

2014-01-18 06:10:51,392 WARN org.apache.zookeeper.server.NIOServerCnxn: caught end of stream exception EndOfStreamException: Unable to read additional data from client sessionid 0x143a5b052980000, likely client has closed socket at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:220) at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208) at java.lang.Thread.run(Thread.java:744) 2014-01-18 06:10:51,394 INFO org.apache.zookeeper.server.NIOServerCnxn: Closed socket connection for client /127.0.0.1:56671 which had sessionid 0x143a5b052980000

Below is error log from master log:

2014-01-18 06:10:51,381 INFO org.apache.zookeeper.ZooKeeper: Session: 0x143a5b052980000 closed 2014-01-18 06:10:51,381 INFO org.apache.hadoop.hbase.master.HMaster: HMaster main thread exiting 2014-01-18 06:10:51,381 ERROR org.apache.hadoop.hbase.master.HMasterCommandLine: Failed to start master java.lang.RuntimeException: HMaster Aborted at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:160) at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:104) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:76) at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2120)

Please note, I am able to start Hbase successfully. I mean after starting Hbase, I am able to see Hmaster running using jps command. But as soon as I try to go to Hbase shell, this issue arises and then by executing jps command, I don’t find Hmaster in list.

Please help me in this issue, as I tried to solve it by myself from last for days, but no luck. Please help

Comment on Modyfying Jets3t S3 GUI tool to work with Walrus (Eucalyptus S3) by zaland

zaland — Fri, 10 May 2013 04:29:44 +0000

Hi is their any one could give suggestion i have download centos 6.4 on one pc and then configure Walrus server from this eucalyptus documentation
http://jeevanullas.in/tmp/Hybrid-Storage-Cloud-Jets3t.pdf
and on second pc which have windows 7 64 bit i have download and configure Jets3t i have completed all the steps and got key from s3 the problem is i am not able to access Walrus server and don’t know how to upload or download files any one could help me out that will be great thanks.

Comment on Experience installing Hbase 0.20.0 Cluster on Ubuntu 9.04 and EC2 by How To Install Hbase On Ubuntu? | Click & Find Answer !

How To Install Hbase On Ubuntu? | Click & Find Answer ! — Mon, 22 Apr 2013 02:55:21 +0000

[…] Robert Berger has a detailed post on his blog. Check it out. […]

Comment on Data Wants to be Free (as in Freedom) by Robert J Berger

Robert J Berger — Tue, 16 Apr 2013 00:56:54 +0000

Friend Scott McNeil (not McNeilly) reminded me of this post by Bruce Schneier kind of saying the same thing, but it sounds much worse when you say it the way he says it (and I agree with him). Also this article in the NY Times Big Data Is Opening Doors, but Maybe Too Many by Steve Lohr And this Slate article by Ryan Gallagher FBI Pursuing Real-Time Gmail Spying Powers as “Top Priority” for 2013

Comment on Gigabit Internet for $70: the unlikely success of California’s Sonic.net WHY NOWHERE ELSE? Hint: Oligopoly by Joe

Joe — Fri, 14 Dec 2012 01:35:06 +0000

Sonic’s DSL service, on the other hand, is utter crap. I had it for 3 months. I got 2.5 Mbps down for $30 a month. It took over a month for them to install it, and even once installed the service dropped out several times a week for no apparent reason. Tech support was indifferent and just kept telling me to try new modems. By the 3rd modem, I had had enough. I now have 20 Mbps down from Comcast for the same price, and have had no problems whatsoever.

Comment on Bonjour / AVAHI & Netatalk to share files files between Ubuntu 10.4 & Mac OS X by Leslie

Leslie — Sat, 17 Nov 2012 04:44:45 +0000

For those who are getting authentication issues as soon as you put in the credentials…

It’s a bug in netatalk

To confirm check your /var/log/messages (or /var/log/syslog) and you’ll find that afpd is crashing

Seems to only occur if you also happen to have Samba installed as well.

https://bugs.launchpad.net/ubuntu/+source/netatalk/+bug/810732

Comment on Copy an EBS AMI image to another Amazon EC2 Region by Lincoln Stein

Lincoln Stein — Sun, 29 Jul 2012 18:06:04 +0000

There is a perl script that will automate this from the command line:

http://search.cpan.org/~lds/VM-EC2-1.10/bin/migrate-ebs-image.pl

The command looks like this:

migrate-ebs-image.pl –from us-east-1 –to ap-southeast-1 ami-123456

Comment on Copy an EBS AMI image to another Amazon EC2 Region by Robert J Berger

Robert J Berger — Fri, 01 Jun 2012 20:52:47 +0000

In reply to EC2 Administrator.

http://books.google.com/books/about/In_the_Beginning_was_the_Command_Line.html?id=OmnF5MGRNn8C

Comment on Copy an EBS AMI image to another Amazon EC2 Region by EC2 Administrator

EC2 Administrator — Fri, 01 Jun 2012 19:43:19 +0000

We don’t use command line.

Comment on HBase/Hadoop on Mac OS X (Pseudo-Distributed) by patrick

patrick — Sun, 13 May 2012 03:46:01 +0000

hi,
how do you limit the hdfs filesystem format to just a portion of the disk? i don’t want hadoop to eat up all the storage on my imac.

thanks in advance,
patrick