>
>>> Is it guaranteed that the rows are grouped by the value of the
>>> partition key? That is, is it guaranteed that I'll get
yes.
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 12/04/2013, at 7:24 PM, Sorin Manolache w
> So that 2 apps with same and very high load pattern are not clashing.
I'm not sure what the advantage is of putting two apps in the same cluster, but
using the replication strategy properties so they are on different nodes. The
reason to put the apps in the same cluster is to share the resource
Always read the news.txt guide
https://github.com/apache/cassandra/blob/cassandra-1.2/NEWS.txt
Cheers
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 12/04/2013, at 8:54 PM, Winsdom Chen wrote:
> Hi Aaron,
> Thanks fo
> ERROR [Thrift:641] 2013-04-11 11:25:19,563 CassandraDaemon.java (line 164)
> Exception in thread Thread[Thrift:641,5,main]
> java.lang.OutOfMemoryError: Java heap space
It's easier for people to help if you provide the error stack. Does this happen
at startup or after it has been running for a
> Hmmm, what is the recommendation for a 10G network if 1G was 300G to
> 500GŠI am guessing I can't do 10 times that, correct? But maybe I could
> squeak out 600G to 1T?
Best thing to do would be run a test on how long it takes to repair or
bootstrap a node. The 300GB to 500Gb was just a guidelin
The errors from Hints are not concerned with repair. Increasing the rpc_timeout
may help with those. If it's logging about 0 hints you may be seeing this
https://issues.apache.org/jira/browse/CASSANDRA-5068
How did repair hang ? Check for progress with nodetool compactionstats and
nodetool nets
>> Do slow reads trigger hint storage?
No.
But dropped read messages is often an indicator that the node is overwhelmed.
>> If hints are being stored, doesn't that imply DOWN nodes, and why don't I
>> see that in the logs?
Hints are stored for two reasons. First if the node is down when the wri
> Bad Request: Type error:
> org.apache.cassandra.cql3.statements.Selection$SimpleSelector@1e7318 cannot
> be passed as argument 0 of function dateof of type timeuuid
>
> Is there something I am missing here or should I open a new ticket?
Yes please.
Cheers
-
Aaron Morton
Free
That's better.
The SSD size is a bit small, and be warned that you will want to leave 50Gb to
100GB free to allow room for compaction (using the default size tiered).
On the ram side you will want to run about 4GB (assuming cass 1.2) for the JVM
the rest can be off heap Cassandra structures.
> The SSTable files are in the -f- format from 0.8.10.
If you can upgrade to the latest version it will make things easier.
Start a node and use nodetool upgradesstables.
The org.apache.cassandra.tools.SSTableExport class provides a blue print for
reading rows from disk.
hope that helps.
---
Thanks Aaron.
Thanks
Jabbar Azam
On 14 April 2013 19:39, aaron morton wrote:
> That's better.
>
> The SSD size is a bit small, and be warned that you will want to leave
> 50Gb to 100GB free to allow room for compaction (using the default size
> tiered).
>
> On the ram side you will want to ru
> How does Cassandra with vnodes exactly decide how many vnodes to move?
The num_tokens setting in the yaml file. What did you set this to?
Cheers
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 14/04/2013, at 11:56 AM, Rust
How does Cassandra with vnodes exactly decide how many vnodes to move?
The num_tokens setting in the yaml file. What did you set this to?
256, same as on all other nodes.
Cheers
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.c
> From the log messages, it looked like the table/keyspace was
> opened before the scrubDataDirectories was executed. This created a race
> condition between two threads.
Seems odd.
AFAIK that startup is single threaded and the scrub runs before the tables are
opened. See AbstractCassandraDaemon.
Started doing a rolling upgrade of nodes from 1.1.9 to 1.2.3 and nodes on
1.1.9 started flooding this error:
Exception in thread Thread[RequestResponseStage:19496,5,main]
java.io.IOError: java.io.EOFException
at
org.apache.cassandra.service.AbstractRowResolver.preprocess(Abstra
Hello,
I'm running a 12 node cluser with cassandra 1.1.5 and oracle jdk 1.6.0_35.
Our application constantly writes large updates with cql. Once in a while,
an rpc_time will occur.
Since a lot of the information is counters, its impossible for me to
understand if the updates complete partially on
Sorry, not LOCAL QUORUM, I meant "ANY" quorum.
On Mon, Apr 15, 2013 at 4:12 AM, Moty Kosharovsky wrote:
> Hello,
>
> I'm running a 12 node cluser with cassandra 1.1.5 and oracle jdk 1.6.0_35.
> Our application constantly writes large updates with cql. Once in a while,
> an rpc_time will occur.
>
Hi Aaron,
"startup is single threaded and the scrub runs before the tables are opened
".
This is what I was thinking too. However, after using the debugger to trace
the code, I realized that MeteredFlusher (see the "countFlushBytes" method)
might open the sstables before the scrub is completed. I
Je suis absent(e) du bureau jusqu'au 22/04/2013
Remarque : ceci est une réponse automatique à votre message "re-execution
of failed queries with rpc_timeout" envoyé le 15/04/2013 3:12:45.
C'est la seule notification que vous recevrez pendant l'absence de cette
personne.
Hi,
While I creating counter column family a extra column is being added
what I do ?
Table creation script
CREATE TABLE counters (
key text,
value counter,
PRIMARY KEY (key)
) WITH COMPACT STORAGE
after describing column family I am getting following
CREATE TABLE counters (
key text,
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