Hi Stack, It is an old jira: HBASE-2315.
-Flavio
On Nov 5, 2011, at 7:40 PM, Stack wrote:
On Sat, Nov 5, 2011 at 12:53 AM, Flavio Junqueira <fpj@yahoo-
inc.com> wrote:
On Nov 5, 2011, at 5:37 AM, lars hofhansl wrote:
One thing I was wondering: Why bookkeeper? Why not store the WAL
itself in
HBase? That way
you might not even need a separate server.
Lars, The key reasons are performance and scalability. We also
would like to
have region servers at some point using BookKeeper for WAL for our
applications, even though the figure doesn't show it. In that case,
we have
a common platform for WAL. We have a jira open about it, but we
haven't made
progress in a while due to other priorities and some issues with
the WAL
interface, but we have been planning on getting back to it.
Btw, I'm assuming you know about the project:
http://zookeeper.apache.org/bookkeeper/
Please keep us posted on project. It sounds like an interesting
experiment. What is the JIRA so we can follow. What are the WAL
Interface issues (same as for NN?).
Thanks Flavio,
St.Ack
flavio
junqueira
research scientist
[email protected]
direct +34 93-183-8828
avinguda diagonal 177, 8th floor, barcelona, 08018, es
phone (408) 349 3300 fax (408) 349 3301
