Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # user >> HBase client hangs after connecting to Zookeeper in pseudo-mode

Copy link to this message
Re: HBase client hangs after connecting to Zookeeper in pseudo-mode
Hello Pal,

    Add along with the hostname of your vm, where you are running
your Hbase, into its /etc/hosts file. You are running Hbase in pseudo
distributed mode, but the logs show that the connection request is going to
some other IP.

Warm Regards,
On Wed, Mar 20, 2013 at 5:32 AM, Pal Konyves <[EMAIL PROTECTED]> wrote:

> Hi,
> I'm new to the list, just registered for this question.
> I'm setting up HBase in pseudo-distributed mode. I can run the hbase
> shell locally, and create tables, put some rows, they are present in
> the HDFS good.
> However, when I try to connect either from the same machine or the
> host machine (the HBase setup is on a VM), the client hangs after
> connecting to ZooKeeper.
> The console output is:
> 13/03/20 00:20:36 INFO zookeeper.ClientCnxn: Opening socket connection to
> server
>  debian-vm/ Will not attempt to authenticate using
> SASL (unkn
> own error)
> 13/03/20 00:20:36 INFO zookeeper.ClientCnxn: Socket connection established
> to de
> bian-vm/, initiating session
> 13/03/20 00:20:36 INFO zookeeper.ClientCnxn: Session establishment
> complete on s
> erver debian-vm/, sessionid = 0x13d84e02e920005,
> negotiated ti
> meout = 180000
>  [..then waits forever, then after forever shows:]
> org.apache.hadoop.hbase.client.NoServerForRegionException: Unable to find
> regio
>  for stops,,99999999999999 after 10 tries.
> I checked the following pitfalls:
> -- My HBase 94.4 build is compatible with my Hadoop 1.0.4 according to
> HBase documentation
> -- I put 'vm-debian' (the hostname I want to identify my virtual
> machine that runs the HBase setup) into the host and virtual machine's
> /etc/host file to map the hostname nicely (and it works, because
> browser shows Hadoop and HBase info pages)
> -- I copied the hadoop related jars from hadoop root and hadoop/lib
> into HBase/lib (although they were the same version, but I could never
> know)
> -- I set up the time on the virtual machine where the HBase setup runs
> properly, no time shifts
> -- I checked the logs and web UIs to see every processes are running:
> Hadoop, HBase master, Zookeeper
> Environment:
> HBase install is a Debian 32 bit virtual machine, with JDK 1.7.0_17
> Host machine is Windows 7 with JDK 1.7.0_05
> but the client program does not work regardless if it's running on the
> HBase VM or on the host
> The tiny client is:
> http://pastebin.com/060Yu2Gz
> here are the config files:
> http://pastebin.com/ArVvwU59
> Please help and tell me what I do wrong, because it has been driving
> me crazy for about 3 days, and I'm getting very angry about this whole
> Hadoop stuff, that I cannot even get running a very basic use-case
> with it.
> Thanks,
> Pal