[
https://issues.apache.org/jira/browse/HDDS-1836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16890636#comment-16890636
]
Shashikant Banerjee edited comment on HDDS-1836 at 7/23/19 3:01 AM:
--------------------------------------------------------------------
[~arp], in test environment, with a limited set of dns, let's say one dn
instance could not connect to its peers. In such cases as well, the leader
election will take much longer time to fail/timeout and hence dns will not be
freed up to be part of different/new pipeline and hence we can run into a
situation where pipeline creation is not possible/delayed in such setups.
Also, we have a client request timeout of by 3s by default. If the leader
election min timeout is considerably larger than the request timeout, we can
see multiple request timeout with a simgle leader election window.
was (Author: shashikant):
[~arp], in test environment, with a limited set of dns, let's say one dn
instance could not connect to its peers. In such cases as well, the leader
election will take much longer time to fail and hence dns will not be freed up
to be part of different/new pipeline and hence we can run into a situation
where pipeline creation is not possible/delayed in such setups.
> Change the default value of ratis leader election min timeout to a lower value
> ------------------------------------------------------------------------------
>
> Key: HDDS-1836
> URL: https://issues.apache.org/jira/browse/HDDS-1836
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode
> Affects Versions: 0.5.0
> Reporter: Shashikant Banerjee
> Assignee: Shashikant Banerjee
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.5.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> The default value of min leader election timeout currently is 5s(done with
> HDDS-1718) by default which is leading to leader election taking much longer
> time to timeout in case of network failures and leading to delayed creation
> of pipelines in the system. The idea is to change the default value to a
> lower value of "2s" for now.
--
This message was sent by Atlassian JIRA
(v7.6.14#76016)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
