Sounds nice. Can you say something about the scales at which you've used
this library? Both write and read load? Size of clusters and size of data?
Ian
On Fri, Jun 11, 2010 at 9:41 AM, Dominic Williams <
thedwilli...@googlemail.com> wrote:
> Pelops is a new high quality Java client library fo
t 12:50 PM, Ian Soboroff wrote:
> Story continued, in hopes this experience is useful to someone...
>
> I shut down the node, removed the huge file, restarted the node, and told
> everybody to repair. Two days later, AE stages are still running.
>
> Ian
>
>
> On Thu, J
I was going to say, if ordered trees are your problem, Cassandra is
not your solution. Try building something with Berkeley DB.
Ian
On Jun 7, 2010, at 17:30, Tatu Saloranta wrote:
On Mon, Jun 7, 2010 at 12:06 AM, David Boxenhorn
wrote:
I wonder if there is a robust algorithm for maintain
BOD configuration is contraindicated for cassandra.
> http://wiki.apache.org/cassandra/CassandraHardware
>
> On Tue, Jun 1, 2010 at 1:08 PM, Ian Soboroff wrote:
> > My nodes have 5 disks and are using them separately as data disks. The
> > usage on the disks is not uniform, and one i
ata directories using du(1) I get around 23TB already
used.
On Wed, Jun 2, 2010 at 11:29 AM, Ian Soboroff wrote:
> Ok, answered part of this myself. You can stop a node, move files around
> on the data disks, as long as they stay in the right keyspace directories,
> and all is fine.
oadbalance, or ... what?
It would be great to be able to fix a storage quota on a per-data-directory
basis, to ensure that enough capacity is retained for anticompaction.
Default 45% quota, adjustable for the brave.
Ian
On Tue, Jun 1, 2010 at 4:08 PM, Ian Soboroff wrote:
> My nodes have 5
My nodes have 5 disks and are using them separately as data disks. The
usage on the disks is not uniform, and one is nearly full. Is there some
way to manually balance the files across the disks? Pretty much anything
done via nodetool incurs an anticompaction with obviously fails. system/ is
no
code a
patch if anyone's interested.
Ian
On Tue, Jun 1, 2010 at 12:41 PM, Ian Soboroff wrote:
> Thanks. Are folks open to exposing this via nodetool? I've been trying to
> figure out a decent way to aggregate and expose all this information that is
> easier than nodetool and les
se is private, so
running a pile of jconsoles is not even possible...)
Ian
On Tue, Jun 1, 2010 at 12:33 PM, Dylan Egan / WildfireApp.com <
dylan.e...@wildfireapp.com> wrote:
> Hi Ian,
>
> On Tue, Jun 1, 2010 at 9:27 AM, Ian Soboroff wrote:
> > Are stats exposed over JMX for compact
Are stats exposed over JMX for compaction? I'm trying to see when a node is
in compaction, and guess when it will complete. tpstats doesn't show
anything but the process is using lots of CPU time... I was wondering if
there's a better view on compaction besides looking backwards in the
system.log
I'm also seeing the same thing. I need to do more log-staring to understand
what's up... incompatible with holiday weekends ;-). tpstats are all 0.
Ian
On Sat, May 29, 2010 at 5:54 PM, Jonathan Ellis wrote:
> Did you manually invoke a GC? It doesn't look like you're using
> enough of the hea
A lot of folks have reported this issue, and there are a few JIRAs related
to it. Post the output of nodetool tpstats. Also, are there lots of GCs in
the system.log? If so, are they something besides ParNew?
Ian
On Thu, May 27, 2010 at 2:32 AM, James Golick wrote:
> We're seeing RAM usage co
My data disks on two of my nodes are RAID-5, just because of circumstances.
My other nodes are JBOD. I don't notice any real difference, but I haven't
strongly benched it.
Ian
On Mon, May 24, 2010 at 2:45 PM, Jonathan Ellis wrote:
> I can think of at least 2 clusters running 32GB boxes with sin
s waiting to be sent.
Is there some way to tell the system "Just stop caring, I'm just writing,
let's worry about leveling out when I get around to wanting to read?"
Ian
On Fri, May 21, 2010 at 9:06 PM, Jonathan Ellis wrote:
> On Fri, May 21, 2010 at 9:09 AM, I
Ok, spending some time slogging through the cassandra-user archives. Seems
lots of folks have this problem. Starting with a JVM upgrade, then skimming
through JIRA looking for patches.
Ian
On Fri, May 21, 2010 at 12:09 PM, Ian Soboroff wrote:
> So at the moment, I'm not running m
0 0
MEMTABLE-POST-FLUSHER 0 0206
FLUSH-WRITER-POOL 0 0206
AE-SERVICE-STAGE 0 0 0
HINTED-HANDOFF-POOL 1 158 23
On Fri, May 21, 2010 at 10:37 AM,
t 7:05 AM, Ian Soboroff wrote:
> > Just an update. I rolled the memtable size back to 128MB. I am still
> > seeing that the daemon runs for a while with reasonable heap usage, but
> then
> > the heap climbs up to the max (6GB in this case, should be plenty) and it
> >
, it's over and done with for this application. I'm just
trying to get stuff loaded.
Is there a limit to how much on-disk data a Cassandra daemon can manage? Is
there runtime overhead associated with stuff on disk?
Ian
On Thu, May 20, 2010 at 9:31 PM, Ian Soboroff wrote:
> Excellen
-- large = more than 2 or 3)
>
> On Tue, May 18, 2010 at 6:24 AM, Ian Soboroff wrote:
> > I hope this isn't too much of a newbie question. I am using Cassandra
> 0.6.1
> > on a small cluster of Linux boxes - 14 nodes, each with 8GB RAM and 5
> data
> > drives. T
I hope this isn't too much of a newbie question. I am using Cassandra 0.6.1
on a small cluster of Linux boxes - 14 nodes, each with 8GB RAM and 5 data
drives. The nodes are running HDFS to serve files within the cluster, but
at the moment the rest of Hadoop is shut down. I'm trying to load a lar
has not yet realized it":
> altered the phi constant in o.a.c.gsm.FailureDetector (
> phiConvictThreshold_,
> default == 8)?
>
> // Roger Schildmeijer
>
> On 13 maj 2010, at 19.53em, Ian Soboroff wrote:
>
> I searched the Wiki and the mailing list archives a b
I searched the Wiki and the mailing list archives a bit but couldn't find
the answer.
If I catch an exception from a Cassandra.Client method, in my case
batch_mutate, what's the proper course of action?
Ignoring InvalidRequestException, we have Unavailable, TimedOut, and
generic Thrift exception
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