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 <tmarthinus...@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 <jbel...@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 >> <tmarthinus...@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.conno...@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 <eev...@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 >> >> > eev...@rackspace.com >> >> > >> >> > >> > >> > >> >> >> >> -- >> Jonathan Ellis >> Project Chair, Apache Cassandra >> co-founder of DataStax, the source for professional Cassandra support >> http://www.datastax.com >> > >
