If you are using replication factor 1 and 3 cassandra nodes, 256 virtual
nodes should be evenly distributed on 3 nodes. So there are totally 256
virtual nodes. But in your experiment, you saw 3*257 mapper. Is that
because of the setting cassandra.input.split.size=3? It is nothing with
node
=1, and using default number of
tokens. You will have 3*256 mappers... In that case, you will be soon out
of mappers or reach the limit.
On Tue, Jan 27, 2015 at 10:59 PM, Huiliang Zhang zhl...@gmail.com wrote:
Hi Shenghua, as I understand, each range is assigned to a mapper. Mapper
.
On Tue, Jun 24, 2014 at 10:01 PM, Huiliang Zhang zhl...@gmail.com wrote:
Thanks. Is there a way to configure Cassandra to use elastic ip instead
of private ip?
On Tue, Jun 24, 2014 at 9:29 PM, Andrey Ilinykh ailin...@gmail.com
wrote:
Cassandra knows nothing about elastic ip. You have to use
firewall.
It is similar to your web router. You can forward your external port to
local one, but application running on your local node doesn't know anything
about it.
On Wed, Jun 25, 2014 at 1:25 PM, Huiliang Zhang zhl...@gmail.com wrote:
Thanks. In fact, it is Cassandra that returns private ip
.
On Wed, Jun 25, 2014 at 6:49 PM, Michael Shuler mich...@pbandjelly.org
wrote:
On 06/25/2014 08:31 PM, Huiliang Zhang wrote:
Thanks, get it. It is working after I translate the private ip to
elastic ip.
This sounds like a nice way to work around a known networking limitation
when using
It should be good to use broadcast_address for my purpose. The only problem
is coming from opscenter now because it cannot recognize the datacenter
from the ip range.
On Wed, Jun 25, 2014 at 7:13 PM, Michael Shuler mich...@pbandjelly.org
wrote:
On 06/25/2014 09:05 PM, Huiliang Zhang wrote
Hi,
I am using Cassandra on EC2 instances. My cassandra always returns private
ips of the instances to the thrift program. Then the program cannot connect
to the private ips.
I already changed the
rpc_address: elastic ip
rpc_address: elastic ip
Then I restarted the cassandra cluster. But the
On Tue, Jun 24, 2014 at 8:55 PM, Huiliang Zhang zhl...@gmail.com wrote:
Hi,
I am using Cassandra on EC2 instances. My cassandra always returns
private ips of the instances to the thrift program. Then the program cannot
connect to the private ips.
I already changed the
rpc_address: elastic ip
--
*From:* Huiliang Zhang zhl...@gmail.com
*Sent:* Friday, June 20, 2014 10:10 PM
*To:* user@cassandra.apache.org
*Subject:* Use Cassnadra thrift API with collection type
Hi,
I have a problem when insert data of the map type into a cassandra
table. I tried all kinds
Hi,
I have a problem when insert data of the map type into a cassandra table. I
tried all kinds of MapSerializer to serialize the Map data and did not
succeed.
My code is like this:
Column column = new Column();
column.name=columnSerializer.toByteBuffer(colname); // the
Hi,
I have a very strange problem with Cassandra bulk loader. Appreciated for
explanations.
I am using a local cassandra server 2.0.5 with default setting.
1. I created a table A and load 108 rows into it by using a hadoop program
with org.apache.cassandra.hadoop.BulkOutputFormat.
2. I run
, Huiliang Zhang zhl...@gmail.com wrote:
Hi,
Cassandra returns ips of the nodes in the cassandra cluster for further
communication between hadoop program and the casandra cluster. Is there a
way to configure the cassandra cluster to return hostnames instead of ips?
My cassandra cluster is on AWS
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