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From Terje Marthinussen <tmarthinus...@gmail.com>
Subject Re: [RELEASE] 0.8.0
Date Mon, 06 Jun 2011 13:09:50 GMT
Of course I talked too soon.
I saw a corrupted commitlog some days back after killing cassandra and I
just came across a committed hints file after a cluster restart for some
config changes :(
Will look into that.

Otherwise, not defaults, but close.
The dataset is fed from scratch so yes, memtable_total_space is there.

Some option tuning here and there and a few extra GC options and a
relatively large patch which makes more compact serialization (this may help
a bit...)

Most of the tuning dates back to cassandra 0.6/0.7. It could be an
interesting experiment to see if things got worse without them on 0.8.

Hopefully I can submit the serialization patch soon.

Regards,
Terje

On Mon, Jun 6, 2011 at 9:12 PM, Jonathan Ellis <jbellis@gmail.com> wrote:

> Has this been running w/ default settings (i.e. relying on the new
> memtable_total_space_in_mb) or was this an upgrade from 0.7 (or
> otherwise had the per-CF memtable settings applied?)
>
> On Mon, Jun 6, 2011 at 12:00 AM, Terje Marthinussen
> <tmarthinussen@gmail.com> wrote:
> > 0.8 under load may turn out to be more stable and well behaving than any
> > release so far
> > Been doing a few test runs stuffing more than 1 billion records into a 12
> > node cluster and thing looks better than ever.
> > VM's stable and nice at 11GB. No data corruptions, dead nodes, full GC's
> or
> > any of the other trouble that plagued early 0.7 releases.
> > Still have to test more nasty stuff like rebalancing or recovering failed
> > nodes, but so far I would recommend anyone to consider  0.8 over 0.7.x if
> > setting up a new system
> > Terje
> >
> > On Fri, Jun 3, 2011 at 5:25 PM, Stephen Connolly
> > <stephen.alan.connolly@gmail.com> wrote:
> >>
> >> Great work!
> >>
> >> -Stephen
> >>
> >> P.S.
> >>  As the release of artifacts to Maven Central is now part of the
> >> release process, the artifacts are all available from Maven Central
> >> already (for people who use Maven/ANT+Ivy/Gradle/Buildr/etc)
> >>
> >> On 3 June 2011 00:36, Eric Evans <eevans@rackspace.com> wrote:
> >> >
> >> > I am very pleased to announce the official release of Cassandra 0.8.0.
> >> >
> >> > If you haven't been paying attention to this release, this is your
> last
> >> > chance, because by this time tomorrow all your friends are going to be
> >> > raving, and you don't want to look silly.
> >> >
> >> > So why am I resorting to hyperbole?  Well, for one because this is the
> >> > release that debuts the Cassandra Query Language (CQL).  In one fell
> >> > swoop Cassandra has become more than NoSQL, it's MoSQL.
> >> >
> >> > Cassandra also has distributed counters now.  With counters, you can
> >> > count stuff, and counting stuff rocks.
> >> >
> >> > A kickass use-case for Cassandra is spanning data-centers for
> >> > fault-tolerance and locality, but doing so has always meant sending
> data
> >> > in the clear, or tunneling over a VPN.   New for 0.8.0, encryption of
> >> > intranode traffic.
> >> >
> >> > If you're not motivated to go upgrade your clusters right now, you're
> >> > either not easily impressed, or you're very lazy.  If it's the latter,
> >> > would it help knowing that rolling upgrades between releases is now
> >> > supported?  Yeah.  You can upgrade your 0.7 cluster to 0.8 without
> >> > shutting it down.
> >> >
> >> > You see what I mean?  Then go read the release notes[1] to learn about
> >> > the full range of awesomeness, then grab a copy[2] and become a
> >> > (fashionably )early adopter.
> >> >
> >> > Drivers for CQL are available in Python[3], Java[3], and Node.js[4].
> >> >
> >> > As usual, a Debian package is available from the project's APT
> >> > repository[5].
> >> >
> >> > Enjoy!
> >> >
> >> >
> >> > [1]: http://goo.gl/CrJqJ (NEWS.txt)
> >> > [2]: http://cassandra.debian.org/download
> >> > [3]: http://www.apache.org/dist/cassandra/drivers
> >> > [4]: https://github.com/racker/node-cassandra-client
> >> > [5]: http://wiki.apache.org/cassandra/DebianPackaging
> >> >
> >> > --
> >> > Eric Evans
> >> > eevans@rackspace.com
> >> >
> >> >
> >
> >
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>

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