Comments on: HBase/Hadoop on Mac OS X (Pseudo-Distributed)

By: Jignesh

Jignesh — Fri, 21 Oct 2011 15:30:55 +0000

David,
I am having same problem and when I tried to look for log I got following error.

ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of unknowne4ce8f3898fc
FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled exception. Starting shutdown.
java.lang.IllegalArgumentException: hostname can’t be null

I have asked HBase forum and they said fix your DNS resolving. But when I go home and trying to work it works but not in the office network. Any idea for resolving this.

And off course this is a great tutorial and still not out of date.

By: Anant Jhingran

Anant Jhingran — Mon, 03 Oct 2011 22:50:00 +0000

Thank you, wonderful tutorial!

By: david gerber

david gerber — Fri, 30 Sep 2011 06:11:05 +0000

I decided to run hbase as standalone because I could not get it to work as pseudo distributed. I know you mentioned hbase list and I will definitely look into that but just by chance maybe somebody or yourself have encountered this error.

ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable’s javadoc for more information

this happens when I run the create ‘table_name’,'value’ in the shell

help would be appreciated if you can.

thanks

By: Robert J Berger

Robert J Berger — Fri, 30 Sep 2011 00:18:22 +0000

Best place to ask such questions is the HBase list

By: david gerber

david gerber — Thu, 29 Sep 2011 23:45:06 +0000

I am getting the same error Unable to load realm info from SCDynamicStore when running examples. Will this interfere with running HBase

By: Kx

Kx — Fri, 05 Aug 2011 05:43:38 +0000

Fixed the “[xX][mM][lL]” is not allowed.” error. Your example code for hbase-site.xml had 2 copies of the line:

You need to delete one of the lines

By: Kx

Kx — Fri, 05 Aug 2011 05:19:56 +0000

I receive “Unable to load realm info from SCDynamicStore” error while trying to run the Hadoop examples and “[Fatal Error] hbase-site.xml:3:6: The processing instruction target matching “[xX][mM][lL]” is not allowed.” when I try to test Hbase using the Hbase shell. Any ideas what causes these errors? I am running Hadoop and Hbase on macbook pro with OS Lion

By: Robert J Berger

Robert J Berger — Wed, 09 Mar 2011 07:49:37 +0000

There are probably other tutorials that are more approprate for xBSD. Also this tutorial is pretty much out of date now…

By: Juan Martinez

Juan Martinez — Wed, 09 Mar 2011 06:14:52 +0000

How About on FreeBSD?. I think there will be no problem.

By: jazeps basko

jazeps basko — Mon, 07 Mar 2011 11:35:52 +0000

jgc, for passwordless login to work you should make your ssh client to use that newly created private key file.

Create file ~/.ssh/config

Add this line:
IdentityFile ~/.ssh/id_dsa_for_hadoop