I've half inherited Cassandra administration on a two DC cluster with 8
nodes (4 in each DC).
We've just successfully completed the upgrade to 2.1.6
On completion of upgradesstables the only remaining "jb" sstable was in
the System keyspace for NodeIdInfo. I notice that this is
(AWS), it will retry and add it back into the pool.
Ben
On 11 October 2011 11:09, CASSANDRA learner cassandralear...@gmail.com
wrote:
Hi Every One,
Actually I was using cassandra long time back and when i tried today, I
am
getting a problem from eclipse. When i am trying to run a basic
Hi Every One,
Actually I was using cassandra long time back and when i tried today, I am
getting a problem from eclipse. When i am trying to run a basic hector
(java) example, I am getting an exception
me.prettyprint.hector.api.exceptions.HectorException: All host pools marked
down. Retry burden
Can you please gimme an example on this using hector client
On Thu, Aug 4, 2011 at 7:18 AM, Boris Yen yulin...@gmail.com wrote:
It seems to me that your column name consists of two components. If you
have the luxury to upgrade your cassandra to 0.8.1+, I think you can think
about using
Hiii,
Can any one pleaze send me any sample application which is (.war)
implemented in java/jsp and cassandra db (Tomcat)
H,,
I was running cassandra in my mac and after some time the machine got to
sleep mode. Now after the machine is On. I tried to kill the process of
cassandra. But i could not able to do that as i could not able to find out
the process id. theres no process there when i pinged PS command
Thnks for the reply Nila
When i did PS command, I could not able to find any process related to
cassandra. Thts the problem..
On Wed, Aug 3, 2011 at 4:12 PM, Benoit Perroud ben...@noisette.ch wrote:
Seems like you have already a Cassandra instance running, so the second
instance cannot
Hi,
Thnks for the info
On Wed, Aug 3, 2011 at 4:03 PM, samal sa...@wakya.in wrote:
I don't know much about this, may help you..
http://www.codefreun.de/apolloUI/
http://www.codefreun.de/apollo/
On Wed, Aug 3, 2011 at 3:36 PM, CASSANDRA learner
cassandralear...@gmail.com wrote:
Hiii
As per subject, Please explain me what is the significance of
java_pidxxx.hprof
do for supercol1)
rowkey1,T,C
rowkey2,A,A
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Hi,
My Question is regarding security.
The data will be written in the disks in strings right! then how come the
data is secured, Is it not secured ???
Hi,
Can we store images , java objects, files in cassandra, if so , how
Please let me know this as i need it urgently...
Hi,
I am having one doubt regarding reads. The data will be stored in
commitlog,memtable,sstables right.. While reading the data may be available
in all the three right, then from where the reads happens,, form commit log?
or from Memtable ? or from SSTables.. Please explain friends
Thnks
in Cassandra. The type of data is not
relevant as there are no types in Cassandra, they all get stored as byte
arrays. The only relevant limit is a column value cannot exceed 2GB (see
http://wiki.apache.org/cassandra/CassandraLimitations).
In terms of how: you just write the data like any other field
the journey...
On Jul 21, 2011 8:02 AM, samal sa...@wakya.in wrote:
As per my knowledge, there is not such expert training available in India
as
of now.
As Sameer said there is enough online material available from where you
can
learn.I have been playing with Cassandra since beginning. We can
not memtable.
Memtable is memory representation of data, which is on flush to create
SSTable on disk.
This is the location where SSTable is stored
https://github.com/apache/cassandra/blob/trunk/conf/cassandra.yaml#L71
Where as Commitlog which is back up (log) for memtable replaying store in
https
these memtables are coming into picture
Commitlog is append only file which record write sequentially, more[2], can
be thought as check sum file, which to used to recalculate data for
memtables in case of crash.
A write first hits the *CommitLog*, then Cassandra stores/writes values to
in-memory data
Thanks Aaron and samal for your quick response. Its going to be helpful
On Thu, Jul 21, 2011 at 4:15 PM, aaron morton aa...@thelastpickle.comwrote:
Try the project wiki here
http://wiki.apache.org/cassandra/ArchitectureOverview or the my own blog
here
http://thelastpickle.com/2011/04/28
Hi Guys,
Can you please give me the best example of creating index on a column
family. As I am completely new to this, Can you please give me a simple and
good example.
where can i get that. Can you please help me out
On Wed, Jul 20, 2011 at 3:39 PM, Sasha Dolgy sdo...@gmail.com wrote:
Examples exist in the conf directory of the distribution...
On Jul 20, 2011 11:48 AM, CASSANDRA learner cassandralear...@gmail.com
wrote:
Hi Guys,
Can you please give me
Hi Guys,
When we talk about cassandra, any how we connect it to cloud. I dont
understand how it is connected to cloud. Whats this Cassandra Cloud.
Hi community,
during my tests i had several OOM crashes.
Getting some hints to find the problem would be nice.
First cassandra crashes after about 45 min insert test script.
During the following tests time to OOM was shorter until it started to crash
even in idle mode.
Here the facts
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