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From Flavio Junqueira <...@apache.org>
Subject Re: quorum.cnxn.threads.size
Date Thu, 12 Dec 2019 15:14:59 GMT
If it is just logging the value of the property, then it is fine because the property is set,
but it is not used if SASL is disabled.

-Flavio

> On 12 Dec 2019, at 16:01, rammohan ganapavarapu <rammohanganap@gmail.com> wrote:
> 
> Flavio,
> 
> Thanks for clarification, I have a cluster with sasl disabled but in start
> up log I still see number of threads set to default 20.
> 
> Thanks,
> Ram
> On Thu, Dec 12, 2019, 6:43 AM Flavio Junqueira <fpj@apache.org> wrote:
> 
>> Hi Ram,
>> 
>> Yes, this parameter is only applicable when SASL is enabled, see in
>> QuorumCnxManager#initializeAuth how it doesn't have a chance to use the
>> parameter when SASL is disabled.
>> 
>> Your assessment is correct about it being based on the number of
>> participants, excluding observers. This parameter is used in
>> QuorumCnxManager, which manages connections for leader election, and
>> observers do not participate in the election.
>> 
>> -Flavio
>> 
>>> On 12 Dec 2019, at 14:41, rammohan ganapavarapu <rammohanganap@gmail.com>
>> wrote:
>>> 
>>> Any idea?
>>> 
>>> On Wed, Dec 11, 2019, 2:23 PM rammohan ganapavarapu <
>> rammohanganap@gmail.com>
>>> wrote:
>>> 
>>>> And to add more on the same property, the description says
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> *"For example, consider a 3-node cluster,# during quorum formation at
>>>> least 3 outgoing connection requests and 3 incoming connection# requests
>>>> will occur. So total 6 threads will be used. It is recommended to
>> configure
>>>> 2x# number of threads for smooth execution, where 'x' represents the
>>>> cluster size"*
>>>> 
>>>> Here* cluster size* is number of *followers* right not both followers
>> and
>>>> observers??
>>>> 
>>>> Ram
>>>> 
>>>> On Wed, Dec 11, 2019 at 2:19 PM rammohan ganapavarapu <
>>>> rammohanganap@gmail.com> wrote:
>>>> 
>>>>> Is this property only applicable in case of sasl auth enabled? or does
>> it
>>>>> work even when we turn off authentication?
>>>>> 
>>>>> 
>>>>> *quorum.cnxn.threads.size*
>>>>> 
>>>>> Thanks,
>>>>> Ram
>>>>> 
>>>> 
>> 
>> 


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