Could someone please help me understand why this might have happened?
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mcasandra wrote:
>
> I am still getting the following:
>
> On node 1:
> ERROR 16:57:31,365 Fatal error: Bootstraping to existing token 0 is not
> allowed (decommission/removetoken the old node first).
>
> On node 2:
> ERROR 16:57:42,300 Fatal error: Bootstraping to existing token
> 56713727820
I am still getting the following:
On node 1:
ERROR 16:57:31,365 Fatal error: Bootstraping to existing token 0 is not
allowed (decommission/removetoken the old node first).
On node 2:
ERROR 16:57:42,300 Fatal error: Bootstraping to existing token
56713727820156410577229101238628035242 is not allo
If you know you will have 3 nodes, you should set the initial token inside
the cassandra.yaml for each node.
Then you won't need to run nodetool move.
Regards,
Chen
www.evidentsoftware.com
On Fri, Feb 18, 2011 at 5:24 PM, mcasandra wrote:
>
> Thanks! I feel so horrible after realizing what m
Thanks! I feel so horrible after realizing what mistaked I made :)
After I bring up the new node I just need to run the following on old nodes?
1) New node set the initial token to 56713727820156410577229101238628035242
2) start new node
3) On second node run nodetool move 1134274556403128211544
try this
BigInteger bi = new BigInteger("2");
BigInteger or = new BigInteger("2");
for (int i=1;i<127;i++) {
or = or.multiply(bi);
}
or = or.divide(new BigInteger("3"));
for (int i=0;i<3;i++) {
System.out.println(or.multiply(new BigInteger(""+i)));
}
which generate
0
56713727820156410577229101
Also, ^ means xor in Java, not exponentiation.
Just use the Python Eric linked. :)
On Fri, Feb 18, 2011 at 3:24 PM, Ching-Cheng Chen
wrote:
> 41
> 82
> 123
> These certainly not correct. Can't just use 2 ^ 127, will overflow
> You can't use Java's primitive type to do this calculation. long o
I'm not sure I can say exactly why, but I'm sure those numbers can't be
correct. One node should be zero and the other values should be very long
numbers like 85070591730234615865843651857942052863.
We need another Java expert's opinion here, but it looks like your snippet
may have "integer
overf
41
82
123
These certainly not correct. Can't just use 2 ^ 127, will overflow
You can't use Java's primitive type to do this calculation. long only use
64 bit.
You'd need to use BigInteger class to do this calculation.
Regards,
Chen
www.evidentsoftware.com
On Fri, Feb 18, 2011 at 4:04 PM,
Thanks! This is what I got. Is this right?
public class TokenCalc{
public static void main(String ...args){
int nodes=3;
for(int i = 1 ; i <= nodes; i++) {
System.out.println( (2 ^ 127) / nodes * i);
}
}
}
41
82
123
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A Java program should work fine. The Wiki and the DataStax documentation
use a python program for the same purpose:
http://www.datastax.com/docs/0.7/operations/clustering#calculating-tokens
On Fri, Feb 18, 2011 at 12:45 PM, mcasandra wrote:
>
> Yes I had set the first node to token 0. I think
Yes I had set the first node to token 0. I think I read somewhere in the
docs. What should I do. Should I write a java program to calculate the hash
for 3 nodes and distribute it accross 3 nodes?
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It sounds like one of your existing nodes already has the initial token
zero. Did you set the intial token of the first node you brought online to
zero?
On Fri, Feb 18, 2011 at 12:35 PM, mcasandra wrote:
>
> I see following error. Is it because I have initial token defined? What
> token
> shoul
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