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https://issues.apache.org/jira/browse/SOLR-6683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14708276#comment-14708276
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Shawn Heisey commented on SOLR-6683:
------------------------------------

I've been staring at this for an hour, and cannot translate this from the words 
to something my mind can grasp.  Can you explain it with a detailed scenario 
where it doesn't work as expected?


> Need a configurable parameter to control the doc number between peersync and 
> the snapshot pull recovery
> -------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-6683
>                 URL: https://issues.apache.org/jira/browse/SOLR-6683
>             Project: Solr
>          Issue Type: Bug
>          Components: replication (java)
>    Affects Versions: 4.7
>         Environment: Redhat Linux 64bit
>            Reporter: Forest Soup
>            Priority: Critical
>              Labels: performance
>
> If there are >100 docs gap between the recovering node and the good node, the 
> solr will do snap pull recovery instead of peersync.
> Can the 100 docs be configurable? For example, there can be 10000, 1000, or 
> 10 docs gap between the good node and the node to recover.
> For 100 doc, a regular restart of a solr node will trigger a full recovery, 
> which is a huge impact to the performance of the running systems
> Thanks!



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