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Posted to user@hbase.apache.org by Adrian Popescu <po...@yahoo.com> on 2010/01/26 18:58:15 UTC
index creation problem in a fully distributed hbase
Hello All,
I try to create some indexes in hbase with a code tested on a non-distributed installation. The problem is that my application which builds the indexes hangs immediately after creating partially the index: the .regioninfo file is created but not the actual index (__INDEX__ is not populated at all). I guess that there is a setting that I miss somewhere on the fully distributed installation but I don't know which. On the other hand I can load, scan tables from the hbase, so hbase is working...
Thank you,
Adrian
Re: index creation problem in a fully distributed hbase
Posted by Adrian Popescu <po...@yahoo.com>.
Thanks for the tip. Actually I realized that the code was working properly but it take some time until the INDEX folder get visible on hadoop.
Does anyone know ways to improve the indexing speed by using map-reduce ? addIndex from IndexedTableAdmin is quite expensive for large tables...
Thanks,
Adrian
________________________________
From: Jean-Daniel Cryans <jd...@apache.org>
To: hbase-user@hadoop.apache.org
Sent: Tue, January 26, 2010 7:38:14 PM
Subject: Re: index creation problem in a fully distributed hbase
Adrian,
If it doesn't throw any stack trace, you could try running jstack'ing
the process and see where the thread is stuck.
J-D
On Tue, Jan 26, 2010 at 9:58 AM, Adrian Popescu
<po...@yahoo.com> wrote:
> Hello All,
>
> I try to create some indexes in hbase with a code tested on a non-distributed installation. The problem is that my application which builds the indexes hangs immediately after creating partially the index: the .regioninfo file is created but not the actual index (__INDEX__ is not populated at all). I guess that there is a setting that I miss somewhere on the fully distributed installation but I don't know which. On the other hand I can load, scan tables from the hbase, so hbase is working...
>
> Thank you,
> Adrian
>
>
>
Re: index creation problem in a fully distributed hbase
Posted by Jean-Daniel Cryans <jd...@apache.org>.
Adrian,
If it doesn't throw any stack trace, you could try running jstack'ing
the process and see where the thread is stuck.
J-D
On Tue, Jan 26, 2010 at 9:58 AM, Adrian Popescu
<po...@yahoo.com> wrote:
> Hello All,
>
> I try to create some indexes in hbase with a code tested on a non-distributed installation. The problem is that my application which builds the indexes hangs immediately after creating partially the index: the .regioninfo file is created but not the actual index (__INDEX__ is not populated at all). I guess that there is a setting that I miss somewhere on the fully distributed installation but I don't know which. On the other hand I can load, scan tables from the hbase, so hbase is working...
>
> Thank you,
> Adrian
>
>
>