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https://issues.apache.org/jira/browse/SOLR-7336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14392910#comment-14392910
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Mark Miller commented on SOLR-7336:
-----------------------------------
{quote}
+ /**
+ * A replica can be in that state in two cases:
+ * <ul>
+ * <li>It is truly down, i.e. hosted on a node that is no longer live.</li>
+ * <li>It failed to acknowledge an update request from the leader and is
+ * catching up with the leader's transaction log.</li>
+ * </ul>
{quote}
Neither of those statements are really currently correct though. It's as I say
above:
"DOWN is the first state before RECOVERING. A node in DOWN should be actively
trying to move to RECOVERING."
The main reason for DOWN is so that leaders can see a replicas state change to
RECOVERING.
It doesn't mean it's truly down or hosted on a node that is no longer live, nor
does it necessarily imply an update failed from the leader.
> Add State enum to Replica
> -------------------------
>
> Key: SOLR-7336
> URL: https://issues.apache.org/jira/browse/SOLR-7336
> Project: Solr
> Issue Type: Improvement
> Components: SolrJ
> Reporter: Shai Erera
> Assignee: Shai Erera
> Attachments: SOLR-7336.patch, SOLR-7336.patch
>
>
> Following SOLR-7325, this issue adds a State enum to Replica.
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