Hi All,
We recently upgraded from .65 to .66 after which we tried adding a new node to
our cluster. We left it bootstrapping and after 3 days, it still refused to
join the ring. The strange thing is that nodetool info shows 50GB of load
and nodetool ring shows that it sees the rest of ring,
I would be happy to submit a patch but is it a bit more trickier than simply
calling JMXConenctor.close(). NodeProbe's use of the JMXConnector is not
exposed in its API The JMX connection is created in NodeProbe's
constructor. Without changing the API, the only place to call close() would
be in
Depending on finalize() is really not want you want todo, so I think
the API change would be preferable.
Bye,
Norman
2010/10/26 Bill Au :
> I would be happy to submit a patch but is it a bit more trickier than simply
> calling JMXConenctor.close(). NodeProbe's use of the JMXConnector is not
> e
No, if you're using the JSON export tools, you'll have to convert those
hex strings into whatever type the binary value represents.
Be sure to send any follow-ups to the user list
(user@cassandra.apache.org), it's a better place to get answers to
questions like this.
--
Eric Evans
eev...@racksp
Hi,
I have a question regarding the best practices for adding new nodes to an
existing cluster. From reading the following wiki:
http://wiki.apache.org/cassandra/Operations -- I understand that when creating
a brand new cluster -- we can use the following to calculate the initial token
for e
While the "adding virtual tokens/nodes to Cassandra" discussion is a good one,
there are a few factors that might delay (or remove?) the necessity of adding
that complexity:
* In Cassandra 0.7, removing load from a node is fairly cheap: a bounded number
of reads are used to determine which port
Is anyone out there using 10G Ethernet or Infiniband with Cassandra in a
cluster where there is a noticeable increase in performance or reduced
latency to warrant the cost of the faster network connections?
Any experience or even rationale would help. We are considering Infiniband
but are on the f
> I may have been unclear about the meaning of timestamp in Cassandra. I was
> under the impression that any given data with the same key value and two
> different timestamps would result in two 'rows'. From what you say, it does
> not seem to be the case. Do you confirm? (In other words, whoever h
On Tue, Oct 26, 2010 at 2:17 PM, Peter Schuller wrote:
>
> > ii) If case of timestamp ties, value breaks ties.
>
> If this is indeed intended to be a guarantee and not an artifact of
> the current implementation (anyone want to comment - jbellis?).
>
>
https://issues.apache.org/jira/browse/CASSAN
On Tue, Oct 26, 2010 at 1:45 PM, Stu Hood wrote:
> While the "adding virtual tokens/nodes to Cassandra" discussion is a good
> one, there are a few factors that might delay (or remove?) the necessity of
> adding that complexity:
>
> * In Cassandra 0.7, removing load from a node is fairly cheap:
On Tue, Oct 26, 2010 at 14:56, Edward Capriolo wrote:
> On Tue, Oct 26, 2010 at 1:45 PM, Stu Hood wrote:
>> While the "adding virtual tokens/nodes to Cassandra" discussion is a good
>> one, there are a few factors that might delay (or remove?) the necessity of
>> adding that complexity:
>>
>> *
Dimitry, Did you get anywhere with this ? Was it the .18 or the .17 node you tried to add ? How did you start the bootstrap for the .18 node ? Does it have a token in the config or did you use nodetool move to set it? I had a quick look at the code AKAIK the message about removing the fat client i
Hi,
I have Cassandra 0.6.6 running on 4 nodes with RF=2. I have around 2
million rows for a simple test.
Can somebody tell me why does the size keep increasing after running
"loadbalance"
Address Status Load Range
Ring
127384081359183520765545698844531833520
10.210.
Hi,
I have Cassandra 0.6.6 running on 4 nodes with RF=2. I have inserted
around 2 million rows for a simple test.
Can somebody tell me why does the size keep increasing after running
"loadbalance"
Address Status Load Range
Ring
1273840813591835207655456988445318335
Do you perform nodetool cleanup after you loadbalance?
From: "Joe Alex"
To: cassandra-u...@incubator.apache.org
Sent: Tuesday, October 26, 2010 2:06:58 PM
Subject: After loadbalance why does the size increase
Hi,
I have Cassandra 0.6.6 running on 4 nodes with RF=2. I have around 2
milli
I did not. I did try "cleanup" and here is after that.
Was expecting an even distribution and total load to be approximately
same as before
also was reading this https://issues.apache.org/jira/browse/CASSANDRA-1418
Address Status Load Range
Ring
1273145522635523171
With the sample Keyspace1 can somebody explain why the column names
does not print in the Standard2 case, is it because of UTF8Type?
cassandra> set Keyspace1.Standard1['100']['first'] = 'John'
Value inserted.
cassandra> set Keyspace1.Standard1['100']['last'] = 'Doe'
Value inserted
Since CompareWith is BytesType, the cli will print the names as (hex) bytes.
Example: "6d6964646c65" => "\x6d\x69\x64\x64\x6c\x65" => "middle"
/d
On Tue, Oct 26, 2010 at 11:42 PM, Joe Alex wrote:
> With the sample Keyspace1 can somebody explain why the column names
> does not print in the Stand
Hi,
I have Cassandra 0.6.6 running on 4 nodes with RF=2.
Let say nodes A, B, C, D
If I have clients A1, B1, C1, D1 connected to respective nodes what
happens when A1 requests A for a key "100" for which D is responsible
as per the Token. C has the second copy.
As per the logs A1 requests A which
You won't get even distribution. All it does is decommission and
auto-bootstrap. http://wiki.apache.org/cassandra/Operations . However, you will
get closer to even distribution if you double the size of your cluster, meaning
if you had 3 nodes, you add 3 more nodes. In that case, each new node w
In 0.7rc1 you can do
get Keyspace1.Standard1['100'] as utf8
if you know that a column defined as bytes has a certain type of data.
On Tue, Oct 26, 2010 at 4:50 PM, Daniel Lundin wrote:
> Since CompareWith is BytesType, the cli will print the names as (hex) bytes.
>
> Example: "6d6964646c65" =>
That is neat. Will switch to .7 as soon as it is out.
On Tue, Oct 26, 2010 at 7:15 PM, Jonathan Ellis wrote:
> In 0.7rc1 you can do
>
> get Keyspace1.Standard1['100'] as utf8
>
> if you know that a column defined as bytes has a certain type of data.
>
> On Tue, Oct 26, 2010 at 4:50 PM, Daniel Lu
http://www.riptano.com/docs/0.6.5/getting_started/index
On Tue, Oct 26, 2010 at 9:35 AM, wrote:
> I thought of using cassandra, but all the installation guides that i found
> online through google search are not helping out...I get too many errors when
> i'm following them..I guess the source
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Rather than use nodetool load balance, assign the tokens manually. See the section on load balancing here http://wiki.apache.org/cassandra/Operationsuse nodetool move or set the tokens in the yaml. I'm may be wrong here, but after the move run repair to make sure each node has all the data it shoul
Lets start with the simple case, all nodes have the same proximity to each other.The client connects to a random node, called the coordinator. When a request is made the coordinator asynchronously sends it to all nodes that are a replica for the requested key. It waits for the response, and in the
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The disks in cassandra node will most probably be your bottleneck. I'd
suggest (haven't tried, this is just based on my intuition) to invest
in SSD disks first and only after that think about going 10Gbps.
- Garo
On Tue, Oct 26, 2010 at 10:11 PM, Wayne wrote:
> Is anyone out there using 10G Eth
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