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https://issues.apache.org/jira/browse/HBASE-25032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17248303#comment-17248303
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Anoop Sam John commented on HBASE-25032:
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What is the approach here?
bq.What else other than this repliction setup? Can you put all? We can think
anything else which might be time consuming. That can really help to decide
whether we should really need yet another step of informing HM from RS that its
ready for taking up regions load.
Can u pls ans above Q?
> Wait for region server to become online before adding it to online servers in
> Master
> ------------------------------------------------------------------------------------
>
> Key: HBASE-25032
> URL: https://issues.apache.org/jira/browse/HBASE-25032
> Project: HBase
> Issue Type: Bug
> Reporter: Sandeep Guggilam
> Assignee: Caroline
> Priority: Major
>
> As part of RS start up, RS reports for duty to Master . Master acknowledges
> the request and adds it to the onlineServers list for further assigning any
> regions to the RS
> Once Master acknowledges the reportForDuty and sends back the response, RS
> does a bunch of stuff like initializing replication sources etc before
> becoming online. However, sometimes there could be an issue with initializing
> replication sources when it is unable to connect to peer clusters because of
> some kerberos configuration and there would be a delay of around 20 mins in
> becoming online.
>
> Since master considers it online, it tries to assign regions and which fails
> with ServerNotRunningYet exception, then the master tries to unassign which
> again fails with the same exception leading the region to FAILED_CLOSE state.
>
> It would be good to have a check to see if the RS is ready to accept the
> assignment requests before adding it to online servers list which would
> account for any such delays as described above
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