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From Terje Marthinussen <tmarthinus...@gmail.com>
Subject Re: [RELEASE] 0.8.0
Date Mon, 06 Jun 2011 14:17:35 GMT
How did that typo happen...
"across a committed hints file"
should be
"across a corrupted hints file"

Seems like the last supercolumn in the hints file has 0 subcolumns.
This actually seem to be correctly serialized, but my code has a bug and
fail to read it.

When that is said, I wonder why the hint has 0 subcolumns in the first
place?
Is that expected behaviour?

Regards,
Terje


On Mon, Jun 6, 2011 at 10:09 PM, Terje Marthinussen <tmarthinussen@gmail.com
> wrote:

> 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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