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From Lucas Nazário dos Santos <nazario.lu...@gmail.com>
Subject Re: Can't list table that exists inside HBase
Date Wed, 17 Jun 2009 17:04:50 GMT
Helped a lot! Thanks for the replies. I'll keep coding and move to newer
versions of HBase and Hadoop as soon as they are out. I'll also have a look
at the flush operation from HBaseAdmin.


On Wed, Jun 17, 2009 at 1:58 PM, Erik Holstad <erikholstad@gmail.com> wrote:

> Hi Lucas!
> Not sure if you have had a look at the BigTable paper, link in the
> beginning
> of http://hadoop.apache.org/hbase/ might clear some of the confusion.
> But basically what happens is to support fast writes we only write to
> memory  and periodically flush this data to disk, so while data is still in
> memory
> it is not persisted, needs to be written to disk/HDFS for that to be true.
> We have a second mechanism for dealing with not losing data while sitting
> in
> memory. This is called WriteAheadLog and we are still waiting for Hadoop to
> support one of the features to make this happen, which hopefully will
> not be too long.
> Hope this helped.
> Erik

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