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From Jagane Sundar <jag...@sundar.org>
Subject RE: Writing the WAL to a different filesystem from the HFiles
Date Wed, 28 Dec 2011 18:42:08 GMT
Hello Mikael,

I am fairly new to HBase, so correct me if I am wrong - it seems to me that the WAL and the
HFile store impose distinctly different requirements upon the underlying storage. The WAL
really wants Posix semantics (append, flush, etc.) in a distributed filesystem whereas the
HFile store wants more of an object store with full object reads and writes.

Adding this configuration option, or better yet, making the WAL fully pluggable as described
in https://issues.apache.org/jira/browse/HBASE-4529, opens up a lot more storage architectures
to HBase.

From: Mikael Sitruk [mikael.sitruk@gmail.com]
Sent: Wednesday, December 28, 2011 7:29 AM
To: dev@hbase.apache.org
Subject: Re: Writing the WAL to a different filesystem from the HFiles

What is the advantage of such configuration?
On Dec 28, 2011 1:10 AM, "Stack" <stack@duboce.net> wrote:

> On Mon, Dec 26, 2011 at 8:06 PM, Jagane Sundar <jagane@sundar.org> wrote:
> > Is this a reasonable thing to attempt? Or am I out of my mind?
> >
> Check back in this mailing list archive for opinions on hbase atop s3.
> St.Ack

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