Hi Cassandra Users,
I am considering Cassandra as the main data store. Just a quick description of
the entity structure that we are looking at to store/design schema for. So we
have 3 entities A,B and C. A has one to many relationship with B and similar is
true for B and C. Hence this gives us
I have a CF defined like this in CLI syntax:
create column family Test
with key_validation_class = UTF8Type
and comparator = 'CompositeType(AsciiType, UTF8Type)'
and default_validation_class = UTF8Type
and column_metadata = [
{ column_name : 'deleted:',
Never mind; the issue with addressing composite column names with empty
components was fixed in the latest pycassa, which is why I was even
able to create them in the Test3 schema below. I get an error in 1.2.1
which I used to be running, but it all seems to work in 1.4.0.
-Bryce
On Wed, 8 Feb
In case anyone else is curious about what is going on here:
https://github.com/pycassa/pycassa/issues/112
The links to the Cassandra JIRA are instructive.
-Bryce
On Wed, 8 Feb 2012 10:59:37 -0600
Bryce Allen bal...@ci.uchicago.edu wrote:
Never mind; the issue with addressing composite column
Hi I fixed the issue. I used ConnectionPools with one server each, with
send and recv timeout to 20Sec. Catching Cassandra Exception. This worked
for me. Thanks for the response
Regards,
Tamil
On Mon, Feb 6, 2012 at 5:38 PM, Sasha Dolgy sdo...@gmail.com wrote:
Tamil, what is the underlying
That's good to hear because it does present a problem for
a strictly manages and firewalled campus environment.
Maxim
On 2/6/2012 11:57 AM, Nick Bailey wrote:
JMX is not very firewall friendly. The problem is that JMX is a two
connection process. The first connection happens on port 7199 and
truncate will throw Unavailable when it times out waiting for one of the nodes
to return.
The full error for the UnavailableException should include some text saying how
many messages it received.
You can also check the logs on the other machines to see if they are erroring.
Finally turn
1. Are the indexes local? i.e if node 1 holds say 10 keys that will
only have indexes for theses 10 keys. In short – interested in knowing how is
the index partitioned?
Yes, nodes only hold the secondary indexes for the rows they are a replica for.
This means it's token range and the
Hi,
I have 3 Cassandra nodes in one data center all on the same local network,
which needs to replicate from an off site data center. Only 1 of the 3 nodes,
called dw01, is externally accessible. dw01 has 2 network interfaces, one
externally accessible and one internal. All 3 nodes talk to
Hi All
I have 2 Cassandra data center (DC1=1 node, DC2=2 nodes).
XXX.XXX.XXX.XXX DC2 RAC1Up Normal 44.3 KB
33.33% 0
YYY.YYY.YY.YYY DC1 RAC1Up Normal 48.71 KB
33.33%
I have create the Keyspace like below, but the result is same. All the data
getting replicated to all over the cluster instead of DC1.
create keyspace WSDC
with placement_strategy =
'org.apache.cassandra.locator.NetworkTopologyStrategy' and strategy_options
= {DC1:1,DC2:0};
--
View this
It is expected that the schema is replicated everywhere, but *data*
won't be in the DC with 0 replicas.
--
/ Peter Schuller (@scode, http://worldmodscode.wordpress.com)
Thanks for the reply. But I can see the data setting inserted in DC1 in DC2.
So that means data also getting replicated to DC2.
Want to know how to restrict this?
--
View this message in context:
Thanks for the reply. But I can see the data setting inserted in DC1 in DC2.
So that means data also getting replicated to DC2.
data setting inserted?
You should not be seeing data in the DC with 0 replicas. What does
data setting inserted mean?
Do you have sstables on disk with data for the
Again the *schema* gets propagated and the keyspace will exist
everywhere. You should just have exactly zero amount of data for the
keyspace in the DC w/o replicas.
--
/ Peter Schuller (@scode, http://worldmodscode.wordpress.com)
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