On Thu, Jun 17, 2010 at 8:52 AM, Mubarak Seyed wrote:
> Hi All,
>
> Regarding client thrift connection, i have 4 nodes which formed a ring, but
> client only knows the IP address of an one node (and thrift RPC port
> number),
> how does client can connect to any one other node without getting rin
Hi All,
Regarding client thrift connection, i have 4 nodes which formed a ring, but
client only knows the IP address of an one node (and thrift RPC port number),
how does client can connect to any one other node without getting ring
information? Can we keep the load balancer and bind all the fo
That is consistent with the
https://issues.apache.org/jira/browse/CASSANDRA-1169 bug I mentioned,
that is fixed in the 0.6 svn branch.
On Wed, Jun 16, 2010 at 10:51 PM, Julie wrote:
> Jonathan Ellis gmail.com> writes:
>
>> > Another thing that is odd is that even when the server nodes are quiesc
Jonathan Ellis gmail.com> writes:
> > Another thing that is odd is that even when the server nodes are quiescent
> > because compacting is complete, I am still seeing cpu usage stay at
> > about 40% . Even after several hours, no reading or writing to the
database
> > and all compactions comple
Thanks Gary, I'm looking at that plug-in feature at the moment but there
seems to be very little documentation on how to use it.
>From the Application point of view though we are still trying to model
the process flows based on our technological approach. Mainly due to the
fact that we need rea
Hi,
I've got Chiton comming up on a mac, however when I connect to my Cassandra
instance, it never comes back from "Fetching keyspaces..."
Log from Chiton:
chiton> bin/chiton-client
/opt/local/Library/Frameworks/
Python.framework/Versions/2.6/lib/python2.6/site-packages/twisted/internet/_sslverif
Hey'all,
As Jonathan pointed out in CASSANDRA-1199, this issue seams to be related to
https://issues.apache.org/jira/browse/THRIFT-788. If you experience slowness
with multiget_slice, take a look at that bug.
-Arya
- Original Message -
From: "Arya Goudarzi"
To: user@cassandra.apache.o
you're just seeing address space used by mmap, not actually
allocated-by-the-jvm memory.
On Wed, Jun 16, 2010 at 7:02 AM, György Dózsa wrote:
> Hi,
> I have a Cassandra cluster and I set java Xmx to 2G in cassandra.in.sh in
> every node, but the memory usage of cassandra daemon is 3 or 4 times of
Hey Dave,
This won't work out of the box, but it should be relatively easy to fix.
Implementing a TextColumnFamilyInputFormat that wraps ColumnFamilyInputFormat
to convert the datastructures it outputs to JSON/TSV/CSV.
If you have time to work on this, there is an open ticket:
https://issues.a
On Tue, Jun 15, 2010 at 19:49, Anthony Ikeda
wrote:
> Is there any concept of Listeners such that when data is added to Cassandra
> we can fire off another process to do something with that data? E.g. create
> a copy in a secondary database for Business Intelligence reports? Send the
> data to an
Hi all,
Is it possible to use the Cassandra ColumnFamilyInputFormat in combination
with the Hadoop "streaming" job? Within the Hadoop docs it says that you
can specify other plugins, eg:
-inputformat JavaClassName
http://hadoop.apache.org/common/docs/r0.15.2/streaming.html#Specifying+Other+Plug
I am trying to set up replication among three cassandra nodes. I believe
it is because I am not setting the correct seed hostnames in
storage-conf.xml. How can I set up node communication through the NAT on
firewall.
Two nodes will be on my network with private ip 192.168.15.86 and
192.168.15
10s is just not a long timeout for hadoop map tasks. you should
increase it. you may also want to experiment with running less
simultaneous map tasks per tracker.
On Tue, Jun 15, 2010 at 11:00 AM, Drew Dahlke wrote:
> Hi, I'm running cassandra .6.2 on a dedicated 4 node cluster and I
> also hav
It may make sense to use a secondary index for the counts. You could store the
counts in both places and use a batch mutation to update them. It does not give
you a transaction guarantee, but it will mean you still make one request to
Cassandra.
e.g.
{
:
:
}
The secondar
Hi,
I have a Cassandra cluster and I set java Xmx to 2G in cassandra.in.sh in
every node, but the memory usage of cassandra daemon is 3 or 4 times of that
(so 6-8 Gb).
Have you got any idea to decrease the memory usage of cassandra?
There are 4 nodes in the cluster and the system has approx 1000
> I set the swappiness to 0 but the problem remained. The only way I've
> managed to avoid it is to use standard disk mode.
Ok. But so can I take it you have confirmed that the machine *is* in
fact swapping during these ParNew:s? I guess so since you mention it
helps to move to standard disk mode
Hi Colin,
> From: Colin Vipurs [mailto:zodiac...@gmail.com]
[...]
> I've got some data that I'm doing counts on, stored in a CF as:
>
> {
> :
> :
>
> }
[...]
> {
> : PLACEHOLDER
> : PLACEHOLDER
> }
>
> would be a better way of storing the data? Does anyone know t
Hi Pete,
I set the swappiness to 0 but the problem remained. The only way I've
managed to avoid it is to use standard disk mode.
On Sat, Jun 5, 2010 at 9:14 PM, Peter Schuller
wrote:
>> INFO 17:54:18,567 GC for ParNew: 1522 ms, 69437384 reclaimed leaving
>> 979692384
>> used; max is 442466304
I've got some data that I'm doing counts on, stored in a CF as:
{
:
:
}
With updates happening as an insert on the specific column.
I need to extract the top X values by count and I was wondering if
storing this as:
{
: PLACEHOLDER
: PLACEHOLDER
}
would be a bett
Anthony Ikeda cardlink.com.au> writes:
> One factor I need to consider is our Business
> Intelligence platform that will need to use the data stored for reporting
> purposes.
>
>
>
> We are looking at using Cassandra for our real-time layer for
> Active-Active data centre use and perhaps have
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