Hi all,
We have encountered the following problem with cassandra.
* We use *cassandra v2.0.0* from *Datastax* community repo.
* We have *3 nodes* in a cluster, all of them are seed providers.
* We have a *single keyspace* with *replication factor = 3*:
*CREATE KEYSPACE bof WITH replication =
W dniu 07.10.2013 08:02, Alexander Shutyaev pisze:
* We have not modified any *consistency settings* in our app, so I assume
we have the *default QUORUM* (2 out of 3 in our case) consistency *for
reads and writes*.
cqlsh uses ONE by default, pycassa uses ONE by default too. I have no
Hi
my two cents - before doing anything else, make sure clocks are
synchronized to the millisecond.
ntp will do so.
Nick.
On Mon, Oct 7, 2013 at 9:02 AM, Alexander Shutyaev shuty...@gmail.comwrote:
Hi all,
We have encountered the following problem with cassandra.
* We use *cassandra
the output of nodetool gossipinfo are the application states of each
endpoint/node in the cluster that are exchanged b/w the nodes during gossiping.
Severity is basically a measure of compaction activity/events in a node ( see
https://issues.apache.org/jira/browse/CASSANDRA-3722 for the
Hi Nick,
Thanks for the note! We have our cassanra instances installed on virtual
hosts in VMWare and the clock synchronization is handled by the latter, so
I can't use ntpdate (says that NTP socket is in use). Is there any way to
check if the clocks are really synchronized? My best attempt was
hii.. can some body please tell me how to select a column of type int or
float and print that column value in cassandra mapreduce?
every thing I read is about reading a String column form cassandra and
print the values..
Hi Michał,
I didn't notice your message at first.. Well this seems like a real cause
candidate.. I'll add an explicit consistency level QUORUM and see if that
helps. Thanks
2013/10/7 Alexander Shutyaev shuty...@gmail.com
Hi Nick,
Thanks for the note! We have our cassanra instances installed
Hello all,
we are planning a Cassandra 1.2 installation at a client site; the
client will run operations themselves and based on their IT team's
experience they are more inclined towards running Cassandra nodes on
Windows servers, however given proper arguments they would also consider
using
On a 2-node cluster with replication factor 2, I have a column family with
an index on one of the columns.
Every now and then, I notice that a lookup of the record through the index
on node 1 produces the record, but the same lookup on node 2 does not! If I
do a lookup by row key, the record is
I had similar issue (reported many times here, there's also a JIRA
issue, but people reporting this problem were unable to reproduce it).
What I can say is that for me the solution was to run major compaction
on the index CF via JMX. To be clear - we're not talking about
compacting the CF
Thanks, I'll give that a try.
Is there a way to do this without JMX? I wouldn't know now to run a JMX
console on my production servers without a graphical interface.
On Mon, Oct 7, 2013 at 3:29 PM, Michał Michalski mich...@opera.com wrote:
I had similar issue (reported many times here,
Hi all,
I want to move to new Cassandra version and use Java DataStax CQL client
with it. For now on I've been using Hector as a Java client and
cassandra-unit to run junit test.
What should I use to test the code now? Is there a special library for
testing code using Datastax driver?
I wasn't
We use Jmxterm: http://wiki.cyclopsgroup.org/jmxterm
On 10/07/2013 07:53 AM, Tom van den Berge wrote:
Thanks, I'll give that a try.
Is there a way to do this without JMX? I wouldn't know now to run a
JMX console on my production servers without a graphical interface.
On Mon, Oct 7, 2013 at
I haven't used VMWare but it seems odd that it would lock up the ntp port. try
ps aux | grep ntp to see if ntpd it's already running.
On Oct 7, 2013, at 12:23 AM, Alexander Shutyaev shuty...@gmail.com wrote:
Hi Michał,
I didn't notice your message at first.. Well this seems like a real
https://issues.apache.org/jira/browse/CASSANDRA-5732
There is now a reproducible test case.
/Janne
On Oct 7, 2013, at 16:29 , Michał Michalski mich...@opera.com wrote:
I had similar issue (reported many times here, there's also a JIRA issue, but
people reporting this problem were unable to
On Sun, Oct 6, 2013 at 9:18 AM, Ran Tavory ran...@gmail.com wrote:
Not sure that's related, but the changes I performed were to disable
hinted handoff and disable auto snapshot. I'll try to reverte these, see if
the picture changes.
It is difficult to imagine how these config changes might
Hi all,
We are using the Ruby gem wrapper for Cassandra:
cassandra-cql
I was wondering if anyone has come across this error before:
Error #CassandraCQL::Thrift::Client::TransportException:
CassandraCQL::Thrift::Client::TransportException,
I've been running into a variety of tricky to diagnose problems recently
that could be summarized as bootstrap related tasks fail without
extra hacky sleep time.
This is a sample edited log file for bootstrapping a node that captures
the general dynamics: http://pastebin.com/yeN9USLt This
Thanks, Ravi!
On Mon, Oct 7, 2013 at 2:40 AM, ravi prasad raviprasad...@yahoo.com wrote:
the output of nodetool gossipinfo are the application states of each
endpoint/node in the cluster that are exchanged b/w the nodes during
gossiping.
Severity is basically a measure of compaction
Hi,
I have a fresh 1-node C* 2.0 install with a demo keyspace created with the
SizeTiered compaction strategy.
I've noticed that in the beginning this keyspace has just one SSTable:
demodb-users-jb-1-Data.db
But as I add more data to the table and do some flushes, the # of SSTables
builds up.
A quick follow up question - If my node is configured with Virtual Nodes
and 256 tokens are assigned to it, how does the STATUS line only show one
token value? In this case the -12331...#.
On Mon, Oct 7, 2013 at 9:00 PM, Sameer Farooqui sam...@blueplastic.comwrote:
Thanks, Ravi!
On Mon, Oct
Not sure about vnodes setup. looks like the output shows only the first token.
if you are looking for all tokens assigned, 'nodetool info -T' might help.
On Monday, October 7, 2013 6:22 PM, Sameer Farooqui sam...@blueplastic.com
wrote:
A quick follow up question - If my node is
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