Which debian/ubuntu packages are you using? I am using the ones that are
maintained by Eric Evans and the init.d script stops the server correctly.
Lee Parker
On Mon, Jul 26, 2010 at 9:22 AM, wrote:
> This is how I have been doing it:
> pkill cassandra
>
> then I do a netstat -anp
The iostat numbers are rather low as is cpu utilization. We have a couple
of nightly jobs which do a lot of reads in a short amount of time. That is
when the pending reads was climbing. I'm going to bump up the number and
see how things run.
Lee Parker
On Tue, Jul 13, 2010 at 6:18 AM, Sch
from GC. Is 3 per processor core too much? Does it matter if it is an AMC
vs Intel processor? How does processor clock speed or cache play into this
setting?
Lee Parker
equivalent to
each other. I would also recommend dropping your heap space to 6G and
adding a swap file. In our case, the large EC2 instances didn't have any
swap setup by default.
Lee Parker
On Mon, May 17, 2010 at 7:31 PM, Curt Bererton wrote:
> Agreed, and I just saw that in storage con
Also, I am using batch_mutate for all of my writes.
Lee Parker
On Mon, May 17, 2010 at 7:11 PM, Lee Parker wrote:
> What are your storage-conf settings for Memtable thresholds? One thing
> that could cause lots of CPU usage is dumping the memtables too frequently
> and then having t
nd
it couldn't keep up with new writes. In the end, I completely dropped that
server and spun up another one to take it's place since the one good server
had all the data anyway. So, it might have also been an issue with that
box.
One more question, are all of the instances in the sa
You need to set the Reversed attribute on the sliceRange. I don't know
which library you are using, but it may be something like
sliceRange.setReversed(true).
Lee Parker
On Sat, May 8, 2010 at 7:36 PM, AJ Chen wrote:
> I have a column family for sorting time-uuid and expect to retrieve
there is
only one node up in the prod cluster.
Lee Parker
Thanks. I'll apply the patch. I'm not real familiar with the JVM options,
but I assume that on a production machine I should remove -Xdebug and the
-Xrunjdwp options.
Lee Parker
On Mon, May 3, 2010 at 2:29 PM, Eric Evans wrote:
> On Mon, 2010-05-03 at 13:30 -0500, Lee Parker wro
the
end, this is causing both of my servers to constantly work on compacting the
files for the index CF.
Lee Parker
n the init
script. Am I missing something?
Lee Parker
Is there a preference as to which JRE is used for cassandra?
Lee Parker
part of the
back up procedure is because that first 1G only helped for a few hours once
it was left on. Also, the 1G has only gotten to 50% usage at most and I
don't know that the system needs another 2G of swap space for normal
operation.
Lee Parker
On Wed, Apr 28, 2010 at 11:46 PM, Jona
8 2364
-/+ buffers/cache: 5266 2413
Swap: 1023388635
Lee Parker
On Wed, Apr 28, 2010 at 9:18 AM, Jonathan Ellis wrote:
> If you're running so close to the edge of running out of memory that
> creating a ln process pushes you over the edge, yo
to do in gathering up the snapshots into a tarball and pushing it to
S3.
Lee Parker
On Tue, Apr 27, 2010 at 9:01 PM, Lee Parker wrote:
> The system is a ubuntu server running 8.04 LTS. Now, I'm getting the
> problem again this evening even with the addition of the swap space.
>
>
The system is a ubuntu server running 8.04 LTS. Now, I'm getting the
problem again this evening even with the addition of the swap space.
Lee Parker
On Tue, Apr 27, 2010 at 1:13 PM, Jonathan Shook wrote:
> The allocation of memory may have failed depending on the available virtual
It is not an ideal solution because the timestamp you pass in may not have
the same granularity as the one used to create your current indexes. So,
you might be using a standard unix epoch timestamp in seconds, while a true
TimeUUID uses 100 nanosecond slices of time.
Lee Parker
On Tue, Apr 27, 20
Adding a swapfile fixed the error, but it doesn't look as though the process
is even using the swap file at all.
Lee Parker
On Tue, Apr 27, 2010 at 9:49 AM, Eric Hauser wrote:
> Have you read this?
>
> http://forums.sun.com/thread.jspa?messageID=9734530
>
> <http://for
Can anyone help with this? It is preventing me from getting backups of our
cluster.
Lee Parker
On Mon, Apr 26, 2010 at 10:02 PM, Lee Parker wrote:
> I was attempting to get a snapshot on our cassandra nodes. I get the
> following error every time I run nodetool ... snapshot.
>
>
ocated for
Java heap) with two cores and only 70G of data in casssandra. They have
plenty of available RAM and HD space. Has anyone else run into this error?
Lee Parker
Is it
problematic to bring the cluster back up with new ips on each node, but the
same tokens as before?
Lee Parker
pened,
cassandra couldn't recover from the error because I didn't have enough
memory on the machines. I have now upgraded to larger machines and that has
cleared up the real memory issues.
Lee Parker
On Sun, Apr 18, 2010 at 6:51 PM, Brandon Williams wrote:
> On Fri, Apr 16, 2010 at 12
compaction performance such that this shouldn't be an issue?
Lee Parker
On Fri, Apr 16, 2010 at 1:13 PM, Jonathan Ellis wrote:
> On Fri, Apr 16, 2010 at 12:50 PM, Lee Parker wrote:
> > Each time I start it up, it will
> > work fine for about 1 hour and then it will crash the s
Row caching is not turned on.
Lee Parker
On Fri, Apr 16, 2010 at 12:58 PM, Paul Brown wrote:
>
> On Apr 16, 2010, at 10:50 AM, Lee Parker wrote:
> > [...]
> > I am trying to migrate data from mysql into the cluster using the
> following methodology:
> > 1. get 500
ne of the reasons we
were trying cassandra was to scale out with smaller nodes rather than having
to run larger instances for mysql.
Lee Parker
g.com/profile_images/77550342/andrew_rondebatch
This looks like two batch mutate commands are somehow overlapping each
other. I can't see how this could happen in my code. Again, I am using the
PHP Thrift library. Can anyone help me identify the problem?
Lee Parker
On Thu, Apr 15, 20
It appears that after some testing, the buffered transport seems more
stable. I am occasionally getting a missing timestamp error during
batch_mutate calls. It happens both on framed and buffered transports, but
when it happens on a framed transport, the server crashes. Is this typical?
Lee
Has anyone used json2sstable to migrate a large amount of data into
cassandra? What was your methodology? I assume that this will be much
faster than stepping through my data and doing writes via PHP/Thrift.
Lee Parker
to feel like this is a bug in Thrift or the Cassandra Thrift interface. Can
anyone offer any other insight? I'm using the current stable release of
Thrift 0.2.0, and Cassandra 0.6.0.
It seems to happen more under heavy load. I don't know if that is meaningful
or not.
Lee Parker
On T
The entire thing was completely my own fault. I was making an invalid
request and, somewhere in the code, I was catching the exception and not
handling it at all. So it only appeared to be silent when in reality it was
throwing a nice descriptive exception.
Lee Parker
l...@spredfast.com
[image
I'm actually using PHP. I do have several php processes running, but each
one should have it's own Thrift connection.
Lee Parker
l...@spredfast.com
[image: Spredfast]
On Thu, Apr 15, 2010 at 10:53 AM, Jonathan Ellis wrote:
> Looks like you are using C++ and not setting the "
When I am verifying the columns in the mutation map before sending it to
cassandra, none of the timestamps are 0. I have had a difficult time
recreating the error in a controlled environment so I can see the mutation
map that was actually sent.
Lee Parker
l...@spredfast.com
[image: Spredfast
s
adding a timestamp to each column. I have verified that the time stamp is
there for several calls and I feel like if the logic was bad, i would see
the error more frequently. Does anyone have suggestions as to what may be
causing this?
Lee Parker
l...@spredfast.com
[image: Spredfast]
What is the benefit of moving to framed transport as opposed to buffered
transport?
Lee Parker
l...@spredfast.com
[image: Spredfast]
nevermind. I figured out what the problem was. I was not putting the
column inside a ColumnOrSuperColumn container.
Lee Parker
l...@spredfast.com
[image: Spredfast]
On Tue, Apr 13, 2010 at 4:19 PM, Lee Parker wrote:
> I upgraded my dev environment to 0.6.0 today in expectation of upgrad
string(19) "Another test column"
["timestamp"]=>
float(1271193181943.2)
}
["deletion"]=>
NULL
}
}
}
}
When I pass this into client->batch_mutate, nothing seems to happen. Any
ideas about what could be going on? I have been able to insert data using
cassandra-cli without issue.
Lee Parker
l...@spredfast.com
[image: Spredfast]
Awesome. This is greatly appreciated.
Lee Parker
l...@spredfast.com
[image: Spredfast]
On Tue, Apr 13, 2010 at 3:54 PM, Eric Evans wrote:
> On Tue, 2010-04-13 at 12:12 -0500, Eric Evans wrote:
> > > Any chance of an updated debian package?
> >
> > Yes. RSN.
>
>
Any chance of an updated debian package?
Lee Parker
l...@spredfast.com
[image: Spredfast]
On Tue, Apr 13, 2010 at 10:10 AM, Donyee wrote:
> Great!
>
> 2010/4/13 Eric Evans
>
>
>> I'm pleased to announce the official release of Apache Cassandra 0.6.0,
>> (aka Th
n of thrift than cassandra uses.
>
> after regenerating my php code from thrift-r917130 (for
> cassandra-0.6.0-rc1), the errors stopped.
>
> -keith
>
> On Mon, Apr 12, 2010 at 9:40 AM, vineet daniel
> wrote:
> > can you post the code
> >
> > On Mon, Apr 12, 2010
are running this in a production environment.
Lee Parker
On Mon, Apr 12, 2010 at 10:45 AM, Jonathan Ellis wrote:
> Pandra is probably targetting 0.6.
>
> If you're just starting, there's no reason for you not to use 0.6 over 0.5
> now.
>
> On Mon, Apr 12, 2010 at 10:42 AM
incompatible with the server
> version you're using.
>
> On Mon, Apr 12, 2010 at 10:24 AM, Lee Parker wrote:
> > If the connections are being made by individual PHP processes running
> from
> > the command line, they shouldn't be using the same connection. Should my
the same thrift connection from multiple threads, for instance.
>
> On Mon, Apr 12, 2010 at 10:02 AM, Lee Parker wrote:
> > I am a newbie with Cassandra. We are currently migrating a large amount
> of
> > data out of MySQL into Cassandra. I have two ColumnFamilies. One
&g
? If these are too low, would i get a more
descriptive error?
Lee Parker
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