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From Alain RODRIGUEZ <arodr...@gmail.com>
Subject Re: How long/how many days 'nodetool gossipinfo' will have decommissioned nodes info
Date Wed, 28 Sep 2016 11:44:19 GMT
>
> I've read from some <forbidden_doc_link> that the gossip info will stay
> around for 72h before being removed.
>

I've read this one too :-). It is 3 days indeed.

This might be of some interest:
https://issues.apache.org/jira/browse/CASSANDRA-10371 (Fix Version/s:
2.1.14, 2.2.6, 3.0.4, 3.4)

C*heers,
-----------------------
Alain Rodriguez - @arodream - alain@thelastpickle.com
France

The Last Pickle - Apache Cassandra Consulting
http://www.thelastpickle.com

2016-09-26 21:17 GMT+02:00 laxmikanth sadula <laxmikanth524@gmail.com>:

> Thank you @Jaoquin and @DuyHai
>
> On Mon, Sep 26, 2016 at 10:00 PM, DuyHai Doan <doanduyhai@gmail.com>
> wrote:
>
>> I've read from some <forbidden_doc_link> that the gossip info will stay
>> around for 72h before being removed.
>>
>> On Mon, Sep 26, 2016 at 6:19 PM, Joaquin Casares <
>> joaquin@thelastpickle.com> wrote:
>>
>>> Hello Techpyassa,
>>>
>>> Sometimes old gossip information tends to echo around for quite a bit
>>> longer than intended. I'm unsure how long the LEFT messages are supposed to
>>> be echoed for, but if you want to force the removal of a removed node from
>>> gossip, you can use the Assassinate Endpoint JMX command. On larger
>>> clusters, running this command synchronously across all machines may be
>>> required. Instructions on Assassinate Endpoint can be found here:
>>>
>>> https://gist.github.com/justenwalker/8338334
>>>
>>> If you're planning on recommissioning the same node, upon bootstrapping
>>> the gossiped message should change to a JOINING message overwriting the
>>> LEFT message.
>>>
>>> I've personally never checked `nodetool gossipinfo` before
>>> recommissioning a node and typically only ensure the node does not appear
>>> in `nodetool status`.
>>>
>>> Hope that helps,
>>>
>>> Joaquin Casares
>>> Consultant
>>> Austin, TX
>>>
>>> Apache Cassandra Consulting
>>> http://www.thelastpickle.com
>>>
>>> On Sun, Sep 25, 2016 at 2:17 PM, Laxmikanth S <techpyaasa@gmail.com>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> Recently we have decommissioned nodes from Cassandra cluster , but even
>>>> after nearly 48 hours 'nodetool gossipinfo' still shows the removed nodes(
>>>> as LEFT).
>>>>
>>>> I just wanted to recommission the same node again. So just wanted to
>>>> know , will it create a problem if I recommission the same node(same IP)
>>>>  again while its state is maintained as LEFT in 'nodetool gossipnfo'.
>>>>
>>>>
>>>> Thanks,
>>>> Techpyaasa
>>>>
>>>
>>>
>>
>
>
> --
> Regards,
> Laxmikanth
> 99621 38051
>
>

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