It looks like the client is not sending the correct bytes.
Are you using Hector or Astyanax? It kind of looks like you are using raw
thrift, using a pre-written client is much easier.
Cheers
-
Aaron Morton
Freelance Cassandra Developer
New Zealand
@aaronmorton
http://www.thel
> is it expectable behaviour? or it's bug?
It exhibits bug like qualities.
Can you create a ticket on https://issues.apache.org/jira/browse/CASSANDRA ?
Thanks
-
Aaron Morton
Freelance Cassandra Developer
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 27/11/2012, at
Thank you very much Andras. I will try MX4J tomorrow.
Also thanks for the pointers on nodetool. I just poked around a bit, and
found that "info" would give you the cache statistics, and there are also
"invalidatekeycache" and "invalidaterowcache". I think these are exactly
what I need.
-- Y.
If its the RMI horror ( registry port + actual port ) you are worried about,
enabling MX4J in cassandra-env.sh for the HTTP transport (
http://wiki.apache.org/cassandra/Operations#Monitoring_with_MX4J ) could help
although i never used it myself. Or you can just throw in the Jolokia JVM agent
h
Interesting -- I completely overlooked the OS cache aspect, but how long
does the OS keep cached pages? It seems they reside in memory for 4 hours
at least (which happens to be the default time for key cache).. The CF has
over 2.6 million rows, and I am only fetching a random set of 5000 each
time
SSTables in http://en.wikipedia.org/wiki/Page_cache maybe?
How many rows do you have in this CF? Are you getting all columns?
What do the cassandra.db mbeans say ( hit ratio, cache requests, items etc )
regards,
Andras
On 27 Nov 2012, at 04:12, Yiming Sun wrote:
> Hi,
>
> I am carrying out s
Hi,
I am carrying out some performance test against a 6-node cassandra cluster
(v1.1.0), and need to disable the key cache entirely as one of the
scenarios.
However, by setting key_cache_size_in_mb to 0, I am still seeing caching
effects. For example, when I fetch a set of 5000 rows, the first t
I'm having some problems during running a Map Reduce program using
Cassandra as input.
I already right some MapRed programs using the cassandra 1.0.9, but now I'm
trying with an old version with a patch that supports trigger. (this one:
https://issues.apache.org/jira/browse/CASSANDRA-1311)
When I
Da: sylv...@datastax.com
> The error message is indeed somewhat misleading and I've just committed a fix
> to return a better message. But at the end of the day, the > limitation is
> that ORDER BY is just not supported with 2ndary indexes.
mmm this is not good news for the model I just designe
>
> Thanks for the answer ... the error described before is: "ORDER BY is only
> supported when the partition key is restricted by an EQ or an IN."
> But I don't see how I didn't respect the rule ...
>
The error message is indeed somewhat misleading and I've just committed a
fix to return a better
es, it is the normal behaviour for snapshots.
>
>
> 2012/11/26 Francisco Trujillo Hacha
>
>> Hi
>>
>> I have a one node cassandra installation (1.1.6) with only one column
>> family. When i tried to execute:
>>
>> ./nodetool -h 172.31.7.26 -p 7199 sna
> Hi
>
> I have a one node cassandra installation (1.1.6) with only one column
> family. When i tried to execute:
>
> ./nodetool -h 172.31.7.26 -p 7199 snapshot MykeyspaceName -t 20121126
>
> The snapshot is stored in a snapshot folder inside the columnfamiliy (the
> only t
e:
>
> ./nodetool -h 172.31.7.26 -p 7199 snapshot MykeyspaceName -t 20121126
>
> The snapshot is stored in a snapshot folder inside the columnfamiliy (the
> only that the keyspace has) instaead of the keyspace data folder.
>
> Is this the normal behavior of nodetool?
>
>
> I am ussing this schema created with cassandra-cli:
>
> CREATE COLUMN FAMILY
> Relationships
> WITH
> key_validation_class = 'CompositeType(UTF8Type, UTF8Type)'
> AND
> comparator = UTF8Type
>
> AND
> default_validation_class = IntegerType
> ;
>
> from
> https://github.com/amorton
Hello users,
faced very strange behaviour when chnaging compression_parameters of exisiting CF. After changing the compaction strategy, compression_strategy returning back to the "SnappyCompressor".
Using version 1.1.5.
[cqlsh 2.2.0 | Cassandra 1.1.5 | CQL spec 2.0.0 | Thrift protocol 19.32.0]
I
Hi, all,
thank you very much for the help. Aaron was right - we had a
multiget_count query,
which depending on the app input would result in a calculation performed
for ~40k keys.
We've released the fix and ~100 GCInspector warnings per day per node went
to ~1 per day per 30 nodes :)
Thank you v
Hi,
I am trying to setup hive on Cassandra using
https://github.com/riptano/hive/wiki/Cassandra-Handler-usage-in-Hive-0.7-with-Cassandra-0.7
. I do not find any better documentation, if you have any other pointers please
provide them. I and trying to setup this without using brisk from DataSta
>> Aaron first of all thanks for your precious help everytime ….
>Thanks for using Cassandra since version 0.6 :)
ahahah :-)
>There are two types of CQL 3 tables, regular ones and those that use "COMPACT
STORAGE". Regular CQL 3 tables are not visible to Thrift as they store some
extra data tha
On Mon, Nov 26, 2012 at 8:41 AM, aaron morton wrote:
> > Is there any noticeable performance difference between thrift or CQL3?
> Off the top of my head it's within 5% (maybe 10%) under stress tests. See
Eric's talk at the Cassandra SF conference for the exact numbers.
Eric's benchmark results was
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