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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-8075) Leader Initiated Recovery should not stop a leader that participated in an election with all of it's replicas from becoming a valid leader.
Date Thu, 24 Sep 2015 20:35:04 GMT

    [ https://issues.apache.org/jira/browse/SOLR-8075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14906959#comment-14906959
] 

Mike Drob commented on SOLR-8075:
---------------------------------

Patch LGTM.

On commit, can you add a comment to {{waitForReplicasToComeUp}} explaining what the return
value means? It makes sense now, but in six months I'm pretty sure I won't have a clue.

> Leader Initiated Recovery should not stop a leader that participated in an election with
all of it's replicas from becoming a valid leader.
> -------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-8075
>                 URL: https://issues.apache.org/jira/browse/SOLR-8075
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Mark Miller
>            Assignee: Mark Miller
>         Attachments: SOLR-8075.patch, SOLR-8075.patch, SOLR-8075.patch, SOLR-8075.patch
>
>
> Currently, because of SOLR-8069, all the replicas in a shard can be put into LIR.
> If you restart such a shard, the valid leader will will win the election and sync with
the shard and then be blocked from registering as ACTIVE because it is in LIR.
> I think that is a little wonky because I don't think it even tries another candidate
because the leader that cannot publish ACTIVE does not have it's election canceled.
> While SOLR-8069 should prevent this situation, we should add logic to allow a leader
that can sync with it's full shard to become leader and publish ACTIVE regardless of LIR.



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