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https://issues.apache.org/jira/browse/SOLR-15286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17418712#comment-17418712
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ASF subversion and git services commented on SOLR-15286:
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Commit 3cd71244d23704a7addf34eeac9f728862518f48 in solr's branch
refs/heads/main from Pushkar Raste
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=3cd7124 ]
SOLR-15286: A brand new follower in the legacy mode should wait to replicate
index before reporting healthy (#238)
* https://issues.apache.org/jira/browse/SOLR-15286
Added log to the HealthCheckHandler for legacy mode to report followers healthy
based on the index generation diff
Co-authored-by: Pushkar Raste <pra...@apple.com>
> A brand new replica in the legacy setup reports healthy before replicating
> index from its leader
> ------------------------------------------------------------------------------------------------
>
> Key: SOLR-15286
> URL: https://issues.apache.org/jira/browse/SOLR-15286
> Project: Solr
> Issue Type: Bug
> Components: replication (java)
> Affects Versions: 8.8.1
> Reporter: Pushkar Raste
> Assignee: Anshum Gupta
> Priority: Major
> Attachments: SOLR-15286.patch
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> In the legacy mode when you add a brand new replica it immediately starts
> reporting healthy even if it hasn't fully replicated index from its leader.
> This issue is also exhibited when you shut down a replica and start it after
> a lot of data is indexed on the leader.
> If the replica reports healthy LB would continue to forward incoming requests
> to it and this would result in inconsistent data being retuned to the caller.
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