Default stack is huge, so maven-ant-tasks-retrieve-build is probably
recursing infinitely somewhere :(
On Fri, May 6, 2011 at 2:42 PM, Ed Anuff wrote:
> I finally got around to getting Eclipse set up to build Cassandra
> following the directions on the wiki and it seems to be working,
> Eclipse i
You don't GC storm without legitimately having a too-full heap. It's
normal to see occasional full GCs from fragmentation, but that will
actually compact the heap and everything goes back to normal IF you
had space actually freed up.
You say you've played w/ memtable size but that would still be
On Fri, May 6, 2011 at 5:13 PM, Alex Araujo
wrote:
> I raised the default MAX_HEAP setting from the AMI to 12GB (~80% of
> available memory).
This is going to make GC pauses larger for no good reason.
> raised
> concurrent_writes to 300 based on a (perhaps arbitrary?) recommendation in
> 'Cassan
Pardon the long delay - went on holiday and got sidetracked before I
could return to this project.
@Joaquin - The DataStax AMI uses a RAID0 configuration on an instance
store's ephemeral drives.
@Jonathan - you were correct about the client node being the
bottleneck. I setup 3 XL client ins
Great! I just wanted to make sure you were getting the information you needed.
On May 6, 2011, at 6:42 PM, Henrik Schröder wrote:
> Well, I already completed the migration program. Using get_range_slices I
> could migrate a few thousand rows per second, which means that migrating all
> of our
Well, I already completed the migration program. Using get_range_slices I
could migrate a few thousand rows per second, which means that migrating all
of our data would take a few minutes, and we'll end up with pristine
datafiles for the new cluster. Problem solved!
I'll see if I can create datafi
If you're able, go into the #cassandra channel on freenode (IRC) and talk to
driftx or jbellis or aaron_morton about your problem. It could be that you
don't have to do all of this based on a conversation there.
On May 6, 2011, at 5:04 AM, Henrik Schröder wrote:
> I'll see if I can make some e
Thanks, Shasha.
It looks like there are two ways to make Cassandra work across regions,
changing the source code or using software like Vyatta and VIPs.
++ Changing the source code ++
Milind documents how to change the source code in 0.7.4 but warns that there
are significant limitations to this
I have subsequently gotten the RPM installed and working. I edited the SPEC to
copy the CQL and apache-cassandra-thrift JARs into the proper location. Is it
worth submitting a diff to the community or will it get rejected due to
licenses?
Konstantin
- Original Message -
From: "Konstant
I finally got around to getting Eclipse set up to build Cassandra
following the directions on the wiki and it seems to be working,
Eclipse isn't showing any errors except that when it fires off the
automatic ant build I get the following error:
maven-ant-tasks-retrieve-build:
BUILD FAILED
java.la
Ok, thanks.
On Fri, May 6, 2011 at 8:32 PM, Jonathan Ellis wrote:
> Column objects are treated as immutable so it's quite likely you'll
> get back the same Columns (and buffers) if your query hits a local
> memtable. This was possible in 0.7.0 as well.
>
It's funny as this was a unit test that
Column objects are treated as immutable so it's quite likely you'll
get back the same Columns (and buffers) if your query hits a local
memtable. This was possible in 0.7.0 as well.
(This only applies to the StorageProxy interface, if you're going over
Thrift it will do a copy over the network.)
We're troubleshooting a memory usage problem during batch reads. We've spent
the last few days profiling and trying different GC settings. The symptoms are
that after a certain amount of time during reads one or more nodes in the
cluster will exhibit extreme memory pressure followed by a gc stor
While I agree that what you suggested is a very good idea the bootstrapping
process _should_ work properly.
Here is some additional detail on the original problem. If the current node
that you are trying to bootstrap has itself listed in seeds in its yaml then it
will be able to bootstrap on a
Those are updated at compaction time.
On Thu, May 5, 2011 at 11:38 PM, Xaero S wrote:
>
> Can someone point me to a document that explains how to interpret
> CFHistograms output? i went through
> http://narendrasharma.blogspot.com/2011/04/cassandra-07x-understanding-output-of.html
> which is a go
On Thu, May 5, 2011 at 6:16 PM, aaron morton wrote:
> Hannes,
> To get a baseline of behaviour set disk_access to standard. You will
> probably want to keep it like that if you want better control over the memory
> on the box.
Changing disk access mode just gives you the illusion of more
Sorry that I did not get back to you on the issue. Your suggestion worked and I
was able to get the RPM to build. Unfortunately, it still does not work for me.
I am getting the error described in
https://issues.apache.org/jira/browse/CASSANDRA-2549 .
I tried Cassandra 0.8 beta 1 tag (the one th
I think this is a question specifically for Patricio Echagüe, though I
welcome answers from anyone else who can contribute...
We are considering using Magnolia as a CMS. Magnolia uses Jackrabbit for its
data storage. Jackrabbit is a JCR implementation.
Questions:
1. Can we plug Cassandra into JC
Hi all,
I have a column family with about 300 rows. Rows name are of 2 categories:
number (eg: 12345)
e_number (eg: e_12345)
is there any way to extract only rows that are numbers?
For the moment I'm iterating over all rows with a KeyRange and filtering
client-side but I don't like this solution
I'll see if I can make some example broken files this weekend.
/Henrik Schröder
On Fri, May 6, 2011 at 02:10, aaron morton wrote:
> The difficulty is the different thrift clients between 0.6 and 0.7.
>
> If you want to roll your own solution I would consider:
> - write an app to talk to 0.6 an
Uhm, having a program that can talk to 0.6 and 0.7 servers at the same time
is not the hard problem, it took way less than five minutes to copy in both
generated clients in the same project and rename the C# namespaces. Two apps
and write to disk inbetween? Maven? That's crazy talk. :-D
What I was
maven-shade-plugin could help with having two versions of thrift at the same
time... but you'd need to build some stuff with maven, and some people don't
like that idea
- Stephen
---
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