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https://issues.apache.org/jira/browse/RATIS-624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17175026#comment-17175026
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Hanisha Koneru edited comment on RATIS-624 at 8/10/20, 7:48 PM:
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{quote}I have been reading Ratis code in the last several days. Right now my
thought is, we gonna need add pause/unpause (should be only one API though) to
RaftServerProtocol interface. So RaftServer that implements RaftServerProtocol
will implement pause/unpause.
{quote}
Yes that sounds about right.
{quote}After this is done. In Ozone, when a OM Ratis server is lagging behind,
I guess a person can use a client to pause that server, ask the server to
install snapshot, and unpause it.
{quote}
In Ozone, once an OM realizes that it is lagging behind, it would call this
RaftServer#pause and then install the snapshot. It should not need a client to
tell it to pause the Ratis server. Install snapshot in OM happens automatically
when required.
was (Author: hanishakoneru):
{quote}I have been reading Ratis code in the last several days. Right now my
thought is, we gonna need add pause/unpause (should be only one API though) to
RaftServerProtocol interface. So RaftServer that implements RaftServerProtocol
will implement pause/unpause.
{quote}
Yes that sounds about right.
{quote}After this is done. In Ozone, when a OM Ratis server is lagging behind,
I guess a person can use a client to pause that server, ask the server to
install snapshot, and unpause it.
{quote}
In Ozone, once an OM realizes that it is lagging behind, it would call this
RaftServer#pause and then install the snapshot. It should not need a client to
tell it to pause the server. Install snapshot in OM happens automatically when
required.
> RaftServer should support pause/ unpause in its LifeCycle state
> ---------------------------------------------------------------
>
> Key: RATIS-624
> URL: https://issues.apache.org/jira/browse/RATIS-624
> Project: Ratis
> Issue Type: Task
> Reporter: Hanisha Koneru
> Assignee: Rui Wang
> Priority: Major
> Labels: ozone
> Fix For: 1.1.0
>
>
> This Jira aims to add support to RaftServer to support pause and unpause to
> its state. When paused, the RaftServer should not accept any incoming append
> log entries.
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