Hi All,
I am using Cassandra-0.7.8 and trying to run "CassandraBulkLoader.java" at .
But it ended up with below error.
I have kept cassandra.yaml file on HDFS at /data/conf/cassandra.yaml .
FYR, Attached the CassandraBulkUploader.java,
So, I made below Hadoop specific changes on
DistributedCa
Hi All,
I wanted to perform SQL operations such as BETWEEN, ORDER BY with ASC/DSC order
on Cassandra-0.7.8.
As I know, Cassandra-0.7.8 does not have direct support to these operations.
Kindly let me know is there a way to accomplish these by tweaking on secondary
index?
Below is my Data model
You could also look at Hector's approach in:
https://github.com/rantav/hector/blob/master/core/src/main/java/me/prettyprint/cassandra/service/clock/MicrosecondsSyncClockResolution.java
It works well and I believe there was some performance testing done on
it as well.
Jim
On Tue, Aug 30, 2011 at
Cheers. That would be another solution.
On Wed, Aug 31, 2011 at 10:42 AM, Jim Ancona wrote:
> You could also look at Hector's approach in:
> https://github.com/rantav/hector/blob/master/core/src/main/java/me/prettyprint/cassandra/service/clock/MicrosecondsSyncClockResolution.java
>
> It works wel
Plenty of comments in this thread already, and I agree with those saying
"it depends". From my experience, a cluster with 18 spindles total
could not match the performance and throughput of our primary
Oracle server which had 108 spindles. After we upgraded to SSD,
things have definitely changed f
SSD's definitely makes live simpler as you will get a lot less trouble with
impact from things like compactions.
Just beware that Cassandra expands data a lot due to storage overhead (for
small columns), replication and needed space for compactions and repairs.
It is well worth doing some rea
Okay, we are looking at setting up a production environment which means
getting our quorum settings and strategies correct. However, we need to
really understand the approach taken to get this right. So far we have been
working with co-located nodes and our prod environment is going to be
distribut
Sorry to fork this topic, but in "composite indexes" do you mean as strings
or as "Composite()". I only ask cause we have started using the Composite as
rowkeys and column names to replace the use of concatenated strings mainly
for lookup purposes.
Anthony
On Wed, Aug 31, 2011 at 10:27 AM, Maxim
It would be very useful to be able to get refreshing statistics from tpstats, a
la top.
nodetool -h localhost tpstats [n]
refresh every second, show me the Active and Pending and Blocked columns as
they currently exist, but under Completed show me a per-second rate based on
the delta from the
I use `watch` to do this:
watch -n 5 nodetool -h localhost tpstats
-psanford
On Wed, Aug 31, 2011 at 1:59 PM, David Hawthorne wrote:
> It would be very useful to be able to get refreshing statistics from tpstats,
> a la top.
>
> nodetool -h localhost tpstats [n]
>
> refresh every second, show
Hi
Actually you can use LOCAL_QUORUM and EACH_QUORUM policy everywhere on
DEV/QA/Prod.
Even it would be better for integration tests to use same Consistency level
as on production.
For production with multiple DC you usually need to chouse between 2 common
solutions: Geographical Distribution or D
watch doesn't calculate diffs
On Aug 31, 2011, at 2:29 PM, Peter Sanford wrote:
> I use `watch` to do this:
>
> watch -n 5 nodetool -h localhost tpstats
>
> -psanford
>
> On Wed, Aug 31, 2011 at 1:59 PM, David Hawthorne
> wrote:
>> It would be very useful to be able to get refreshing statist
Is there any way to initialize via thrift cluster configuration properties
(e.g., partitioner)? Do you always have to set these values via the
cassandra.yaml file? I'm trying to programmatically build out all of my
schema so that I can build out a fresh install just by running the app.
On Wed, Aug 31, 2011 at 6:56 PM, Stephen McKamey wrote:
> Is there any way to initialize via thrift cluster configuration properties
> (e.g., partitioner)? Do you always have to set these values via the
> cassandra.yaml file? I'm trying to programmatically build out all of my
> schema so that I ca
All,
I've got a 4 node cluster (ec2 m1.large instances, replication = 3)
that has one primary counter type column family, that has one column
in the family. There are millions of rows. Each operation consists of
doing a batch_insert through pycassa, which increments ~17k keys. A
majority of these
1ms per add operation is the general order of magnitude I have seen with my
tests.
On Wed, Aug 31, 2011 at 6:04 PM, Ian Danforth wrote:
> All,
>
> I've got a 4 node cluster (ec2 m1.large instances, replication = 3)
> that has one primary counter type column family, that has one column
> in th
$ ./nodetool -h localhost ring
Address DC RackStatus State LoadOwns
Token
136112946768375385385349842972707284580
10.0.0.57datacent
Hi everybody,
I'm running cassandra 0.7.5 on about 20 RHEL 5 (24 GB RAM) machines and I'm
having issues with snapshots, json sstable conversions, and various nodetool
commands due to memory errors and the lack of the native access C libraries.
I tried putting jna.jar on the classpath but I'm stil
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