[jira] [Updated] (SOLR-4674) repeaters must be configured to replicate on startup in order to work properly when replicating config files

["Cassandra Targett (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-4674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Cassandra Targett updated SOLR-4674:
------------------------------------
    Component/s: replication (java)

> repeaters must be configured to replicate on startup in order to work properly when replicating config files
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-4674
>                 URL: https://issues.apache.org/jira/browse/SOLR-4674
>             Project: Solr
>          Issue Type: Bug
>          Components: replication (java)
>            Reporter: Mark Miller
>
> Filing on Mark's behalf based on a mailing list thread about replication tests related to automatic core reloads...
> {quote}
> Let's say you have 3 nodes, a master, a repeater, and a slave.
> When you do updates and commit on the master, things will replicate to the repeater. You now need to make the repeaters most replicatable commit the latest commit, even though a normal trigger for this (startup, commit) has not occurred. If you don't, the right stuff won't happen between the repeater and the slave.
> In the non core reload case, we currently reach right in the ReplicationHandler and update the last replicatable commit point on the repeater as part of installing the new index. This is somewhat new, there used to be a commit that would push the slave gen past the leader by one. 
> In the Core reload case, it's a little trickier. If you are replicating on startup, you should be fine - the right most replicatable commit will be set when the core reloads. But if you don't, and just have replicate on commit, the repeater won't be ready to replicate the right commit point to the slave.
> I guess the best workaround for that at the moment is to be sure to have replicate on startup set on your repeater.
> {quote}



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