It exists other tools than jhat to browse a heap dump, which stream
the heap dump instead of loading it full in memory like jhat do.
Kind regards,
Benoit.
2010/4/3 Weijun Li weiju...@gmail.com:
I'm running a test to write 30 million columns (700bytes each) to Cassandra:
the process ran
Just added this to the wiki as it seemed a very frequent request on
irc: http://wiki.apache.org/cassandra/MultinodeCluster
Would very much appreciate feedback and edits to improve it.
b
Thank you Benoit. I did a search but couldn't find any that you mentioned.
Both jhat and netbean load entire map file int memory. Do you know the name
of the tools that requires less memory to view map file?
Thanks,
-Weijun
On Sat, Apr 3, 2010 at 12:55 AM, Benoit Perroud ben...@noisette.ch
Have a look at either Eclipse Memory Analyser (they have a standalone
version of the memory analyser) or YourKit Java Profiler (commercial,
but with evaluation license). I successfully load and browse heap
bigger than the available memory on the system.
Regards,
Benoit
2010/4/3 Weijun Li
Hi,
Nice work.
I guess just a small mistake :
the second ListenAddress192.168.1.1/ListenAddress should be
ListenAddress192.168.2.34/ListenAddress
And I would suggest to add a small part on making the thrift interface
listening on more than localhost.
Kind regards,
Benoit.
2010/4/3 Benjamin
ello.
A bug occurs for me when working with Cassandra.
With this e-mail I intend to show what I do to recreate it, and then perhaps
you can try it out too.
SUMMARY OF THE BUG:
(1): insert a row with a supercolumn that contains a subcolumn.
(2) remove the supercolumn.
(3) reinsert the
Does anyone have solve the problem?I encounter the same error too.
On Mon, Mar 29, 2010 at 12:12 AM, Benoit Perroud ben...@noisette.ch wrote:
I got the same error when the nodes are using lot of I/O, i.e during
compaction.
2010/3/28 Eric Yu suc...@gmail.com:
I have not restart my nodes.
Thank you! Updated.
On Sat, Apr 3, 2010 at 2:57 AM, Benoit Perroud ben...@noisette.ch wrote:
Hi,
Nice work.
I guess just a small mistake :
the second ListenAddress192.168.1.1/ListenAddress should be
ListenAddress192.168.2.34/ListenAddress
And I would suggest to add a small part on
Seeds are used for ring discovery, so there really isn't a load
concern for them, afaict. Have enough to meet your availability
needs, including placement, and rock out.
On Sat, Apr 3, 2010 at 9:01 AM, Joseph Ruscio jrus...@gmail.com wrote:
Ben,
Great, was looking for something like this just
For the past week or so I've been developing (another) Scala based high
level Cassandra client - Cascal. While I know there's several other (good
quality) clients I thought developing my own would be a great way to
familiarize myself with Cassandra as part of my analysis at work (which it
was!).
Woot. Ver much looking forward to this stuff Joe.
On Sat, Apr 3, 2010 at 10:14 AM, Joe Stump j...@joestump.net wrote:
On Apr 2, 2010, at 4:49 PM, Masood Mortazavi wrote:
Is there a ready recipe for deploying a Cassandra cluster in AWS? ...
(Seeds need some fixed IP addresses.)
We have a
IMO the right way to do it is to configure your machines so that
autodetecting listenaddress Just Works, so you can deploy exactly the
same config to all nodes.
On Sat, Apr 3, 2010 at 3:14 AM, Benjamin Black b...@b3k.us wrote:
Just added this to the wiki as it seemed a very frequent request on
I do not claim it is the best/right way, just the one least likely to go wrong.
On Sat, Apr 3, 2010 at 12:10 PM, Jonathan Ellis jbel...@gmail.com wrote:
IMO the right way to do it is to configure your machines so that
autodetecting listenaddress Just Works, so you can deploy exactly the
same
On Sat, Apr 3, 2010 at 6:40 PM, Avinash Lakshman
avinash.laksh...@gmail.com wrote:
We use anywhere from 3-5 seeds for clusters that have over 150 nodes. That
should suffice for larger sizes too since they are only for initial
discovery.
would it make sense to just use a round robin dns on the
Seems like a lot of complexity for a very small win (how often do you
bootstrap new nodes? if you only need a handful of seeds, what's all
that hard about listing them all on all nodes?). I prefer simple and
predictable, and trying to do this with round robin DNS seems to be
neither, to me.
b
I don't think Lazyboy exposes range queries [that is, iterating rows
whose keys you do not know ahead of time]. Pycassa does, though.
On Thu, Apr 1, 2010 at 12:05 PM, Gary daxia...@gmail.com wrote:
I am trying out the lazyboy library to access cassandra, I was able to get
the data in and out
On Apr 3, 2010, at 1:53 PM, Benjamin Black wrote:
What specific features are you looking for to operate on EC2?
It seemed people weren't looking for features, but tools to help with the
management. The two things we've created that people might be interested in are:
1. An EC2-specific
On Apr 3, 2010, at 2:00 PM, Jonathan Ellis wrote:
I don't think Lazyboy exposes range queries [that is, iterating rows
whose keys you do not know ahead of time]. Pycassa does, though.
I think ieure's fork has itertools support that will let you do crazy iteration
stuff with it. I haven't
I'm pretty familiar with EC2, hence the question. I don't believe any
patches are required to do these things. Regardless, as I noted in
that ticket, you definitely do NOT need AWS credentials to determine
your availability zone. It is available through the metadata web
server for each instance
On Apr 3, 2010, at 2:54 PM, Benjamin Black wrote:
I'm pretty familiar with EC2, hence the question. I don't believe any
patches are required to do these things. Regardless, as I noted in
that ticket, you definitely do NOT need AWS credentials to determine
your availability zone. It is
Hi everyone,
At my work we are in the early stages of moving our data which lives on EC2
machines from a Flare/memcache system to Cassandra so your chat has been
interesting to me.
I realize that this might complicate things and make things less simple but
would it be useful for the nodes
Right, you determine AZ by looking at the metadata. us-east-1a is a
different AZ from us-east-1b. You can't infer anything beyond that,
either with the AWS API or guesses about IP addressing. My EC2 snitch
recipe builds a config file for the property snitch that treats AZs
like racks (just
What version do you use? i think that bug was fixed in .6
https://issues.apache.org/jira/browse/CASSANDRA-703
Regards,
/VJ
On Sat, Apr 3, 2010 at 5:27 AM, Arash Bazrafshan ara...@gmail.com wrote:
ello.
A bug occurs for me when working with Cassandra.
With this e-mail I intend to
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