Following case may be logical correct for Cassandra, but difficult for user.
Let's say:
Cassandra consistency level: write all, read one
replication_factor:3
For one record, rowkey:001, column:status
Client 1, insert value for rowkey 001, status:True, timestamp 11:00:05
Client 2 Slice Query, get
Java version issue?
Using sun jdk or open jdk?
-Vivek
On Tue, Oct 1, 2013 at 6:16 AM, Krishna Chaitanya wrote:
> Hello,
>I modified a network probe which collects network packets to
> store them into cassandra. So there are many packets that are coming in, I
> capture the packets in
Hello,
I modified a network probe which collects network packets to
store them into cassandra. So there are many packets that are coming in, I
capture the packets in the program and store them into cassandra. I am
using libQtCassandra library. The program is crashing with segmentation
fa
> Solr's index sitting on a single machine, even if that single machine can
> vertically scale, is a single point of failure.
>
And about Cloud Solr?
2013/9/30 Ken Hancock
> Yes.
>
>
> On Mon, Sep 30, 2013 at 1:57 PM, Andrey Ilinykh wrote:
>
>>
>> Also, be aware that while Cassandra has knobs
Hi all,
In cassandra cluster, once a write/update is successful to the particular
instance locally, i want to log the data that is updated and its timestamps
separately in a file.. In which class it will be more appropriate to do this..
To the extent i explored the codebase, it's possible to d
Yes.
On Mon, Sep 30, 2013 at 1:57 PM, Andrey Ilinykh wrote:
>
> Also, be aware that while Cassandra has knobs to allow you to get
>> consistent read results (CL=QUORUM), DSE Search does not. If a node drops
>> messages for whatever reason, outtage, mutation, etc. its solr indexes will
>> be inc
> Also, be aware that while Cassandra has knobs to allow you to get
> consistent read results (CL=QUORUM), DSE Search does not. If a node drops
> messages for whatever reason, outtage, mutation, etc. its solr indexes will
> be inconsistent with other nodes in its replication group.
>
> Will repair
To clarify, solr indexes are not distributed in the same way that Cassandra
data is stored.
With Cassandra, each node receives a fraction of the keyspace (based on
your replication factor and token assignment). With DSE Search, writes to
Cassandra are hooked and each node independently indexes it
On Mon, Sep 30, 2013 at 8:50 AM, Ertio Lew wrote:
> Solr's data is stored on the file system as a set of index files[
> http://stackoverflow.com/a/7685579/530153]. Then why do we need anything
> like Solandra or DataStax Enterprise Search? Isn't Solr complete solution
> in itself ? What do we ne
the main reason is scalability and performance.
If your Solr indexes fit fine on a single system and doesn't need to scale
out, Cassandra/HDFS isn't necessary.
On Mon, Sep 30, 2013 at 11:50 AM, Ertio Lew wrote:
> Solr's data is stored on the file system as a set of index files[
> http://stacko
Solr's data is stored on the file system as a set of index files[
http://stackoverflow.com/a/7685579/530153]. Then why do we need anything
like Solandra or DataStax Enterprise Search? Isn't Solr complete solution
in itself ? What do we need to integrate with Cassandra ?
I have the same issue using cassandraStorage() and other dataset for this
*note*:
the example cql3 datatest are
CREATE TABLE test (
id text PRIMARY KEY,
title text,
age int
);
and insert some dummy data
insert into test (id, title, age) values('1', 'child', 21);
insert into test (id,
hi:
I try to test cassandra 2.0.1 and pig 0.11.1
but always when i try to load any keyspacei have this error:
Example creating a test keyspace and data:
I have this error:
*grunt> define CqlStorage org.apache.cassandra.hadoop.pig.CqlStorage();*
*grunt> rows = LOAD 'cql://keyspace0/test'
For those in the Europe area, there will be a Cassandra Summit EU 2013 in
London in the month of October. On 17 October, there will be the main
conference sessions and the 16th and 18th there will be Cassandra workshops.
http://www.datastax.com/cassandraeurope2013
The speakers have been announ
& what about JRE is it provided by DSC so that I don't need to take care of
those* *Oracle JRE* updates myself ? So which one is more preferable or
lets say commonly used for production installs ?
Btw I think I should be able to easily switch between them retaining data ?
On Mon, Sep 30, 2013 at
OpsCenter should be a separate package as you would only install it on a
single node, not necessarily even one that is running Cassandra.
On Sat, Sep 28, 2013 at 2:12 PM, Ertio Lew wrote:
> I think both provide the same thing except Datastax Community also
> provides some extras like Opscente
hi:
is that mean that antlr-3.2.jar is not the correct version?
what is the correct version?
In the build file, I see that cassandra uses the jar lib at the *
${build.lib}* folder, in this case antlr-3.2.jar
...
Building Grammar
${build.src.java}/org/apache/cassandra/cql/Cql.g ..
Thanks Aaron, I've added to the ticket. We were not running on TRACE
logging.
From: Aaron Morton [mailto:aa...@thelastpickle.com]
Sent: 30 September 2013 08:37
To: user@cassandra.apache.org
Subject: Re: 2.0.1 counter replicate on write error
ERROR [ReplicateOnWriteStage:19] 2013-09-27 10:
Thanks Aaron!
Does DSC include other things like Opscenter by default ? I installed DSC
on linux, but Opscenter wasn't installed there but when tried on Windows it
was installed along with JRE & python, using the windows installer.
Would it be possible to remove any of these installations but kee
Thanks...
On Sep 30, 2013 12:35 PM, "Aaron Morton" wrote:
> See the comments for rpc_address and listen_address in the yaml file.
> These control which interfaces the server binds to.
>
> If you leave them as blank and DNS is correctly setup they will bind to
> the correct address.
>
> If you set
It's an error in the antlr compilation, check the antlr versions.
Cheers
-
Aaron Morton
New Zealand
@aaronmorton
Co-Founder & Principal Consultant
Apache Cassandra Consulting
http://www.thelastpickle.com
On 27/09/2013, at 11:53 PM, Miguel Angel Martin junquera
wrote:
>
>
>
> What can be the reason for the handoff process not to finish?
Check for other errors about timing out during hint reply.
> What would be the best way to recover from this situation?
If they are really causing trouble drop the hints via HintedHandoffManager JMX
MBean or stopping the node and de
> I am not sure if I should use datastax's DSC or official Debian packages from
> Cassandra. How do I choose between them for a production server ?
They are technically the same.
The DSC update will come out a little after the Apache release, and I _think_
they release for every Apache release.
> ERROR [ReplicateOnWriteStage:19] 2013-09-27 10:17:14,778 CassandraDaemon.java
> (line 185) Exception in thread Thread[ReplicateOnWriteStage:19,5,main]
> java.lang.AssertionError: DecoratedKey(-1754949563326053382,
> a414b0c07f0547f8a75410555716ced6) != DecoratedKey(-1754949563326053382,
> aead
See the comments for rpc_address and listen_address in the yaml file. These
control which interfaces the server binds to.
If you leave them as blank and DNS is correctly setup they will bind to the
correct address.
If you set them to 0.0.0.0 they will bind to all interfaces, you should not do
> Thanks for the reply. Isn't the addColumn(IColumn col) method in the writer
> private though?
>
>
Yes but I thought you had it in your examples, was included for completeness.
use the official overloads.
Cheers
-
Aaron Morton
New Zealand
@aaronmorton
Co-Founder & Principa
At 600 CF's I would expect to see very frequent flushing to disk, as the
algorithm that drives this from a memory standpoint is sensitive to the number
of CF's.
Additionally, and from experience on earlier versions, you can expect it to
take over half an hour to make schema changes to over 500
27 matches
Mail list logo
