Hi Thouraya,
In all versions of Cassandra, each query will have one coordinator. Any node in
the cluster can be the coordinator and this is choice is made by the
client/driver. The coordinator may or may not have a replica of the data being
requested.
Cheers,
Alec Collier | Workplace Service
For key cache files (which you have below – note ‘cassandra_saved_caches’ and
-KeyCache– ), the safest thing to do is to simply remove them (move them aside
or delete them). They’re simple caches, and they’ll be recreated shortly after
starting.
- Jeff
From: David Paulsen
Reply-To: "user@cas
Off-topic to the Cassandra list, but corosync/pacemaker comes to mind for
automatic service switchover between nodes.
For monitoring and alerting, there's almost too many to mention...
On Tue, Aug 18, 2015 at 2:45 PM, Vikram Kone wrote:
> Hi John,
> I have posted the same Q on azkaban googl
Two questions really:
1) Is there a way to search the archives
https://mail-archives.apache.org/mod_mbox/cassandra-user/ or another better
approach to searching for Cassandra answers such as #2?
2) I have the following error in /var/log/cassandra/cassandra.log -
cassandra dies after "service cass
Hi John,
I have posted the same Q on azkaban google group but there is no response
so far :(
If i want to do the old school way of monitor, alert and start the process
somewhere else..how can I do this? Are there some ready made tools to do
this kind of general purpose monitoring and alerting for s
Hi Jean,
I might help, but I need to know what you have done recently (change the
RF, Add remove node, cleanups, anything else as much as possible...)
Also, could you please do the "nodetool status *myks*" for your keyspace(s)
? We will then be able to know the theoretical ownership of each node
Hi all;
Please with the version cassandra 2.0.6, we have by default one coordinator
per data center, per client or per query ?
Thank you so much for help.
Kind Regards.
Weird, you issue makes me remember of
https://issues.apache.org/jira/browse/CASSANDRA-8502 but it seems that it
has been fixed since 2.1.6 and you're using 2.1.8
Can you try to reproduce it using small page with Spark
(spark.cassandra.input.fetch.size_in_rows)
?
On Tue, Aug 18, 2015 at 11:50 AM,
No. I did not try.
I would like to understand what is going on before I make my problem, maybe
even worse.
I really would like to understand:
1) Is this normal?
2) What is the meaning of the column Load?
3) Is there anything to fix? Can I leave it like that?
4) Did I do something wrong? Wh
Hey Jean,
Did you try running a nodetool cleanup on all your nodes, perhaps one at a
time?
On Tue, Aug 18, 2015 at 3:59 AM, Jean Tremblay <
jean.tremb...@zen-innovations.com> wrote:
> Hi,
>
> I have a phenomena I cannot explain, and I would like to understand.
>
> I’m running Cassandra 2.1.8 on
Hello,
I have an issue with a when I query a table with static
fields (without where clause) with Cassandra 2.1.8 / 2 nodes clusters.
No more indication in the log :
ERROR [SharedPool-Worker-1] 2015-08-18 10:39:02,549 QueryMessage.java:132 -
Unexpected error during query
java.lang.NullPo
Hi,
I have a phenomena I cannot explain, and I would like to understand.
I’m running Cassandra 2.1.8 on a cluster of 5 nodes.
I’m using replication factor 3, with most default settings.
Last week I done a nodetool status which gave me on each node a load of about
200 GB.
Since then there was no
12 matches
Mail list logo
