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From "Pushkar Raste (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-9906) Use better check to validate if node recovered via PeerSync or Replication
Date Thu, 29 Dec 2016 18:20:58 GMT

     [ https://issues.apache.org/jira/browse/SOLR-9906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pushkar Raste updated SOLR-9906:
--------------------------------
    Attachment: SOLR-PeerSyncVsReplicationTest.diff

Here is a patch. 

I have also fixed bugs in the tests I came across.

> Use better check to validate if node recovered via PeerSync or Replication
> --------------------------------------------------------------------------
>
>                 Key: SOLR-9906
>                 URL: https://issues.apache.org/jira/browse/SOLR-9906
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Pushkar Raste
>            Priority: Minor
>         Attachments: SOLR-PeerSyncVsReplicationTest.diff
>
>
> Tests {{LeaderFailureAfterFreshStartTest}} and {{PeerSyncReplicationTest}} currently
rely on number of requests made to the leader's replication handler to check if node recovered
via PeerSync or replication. This check is not very reliable and we have seen failures in
the past. 
> While tinkering with different way to write a better test I found [SOLR-9859|SOLR-9859].
Now that SOLR-9859 is fixed, here is idea for better way to distinguish recovery via PeerSync
vs Replication. 
> * For {{PeerSyncReplicationTest}}, if node successfully recovers via PeerSync, then file
{{replication.properties}} should not exist
> For {{LeaderFailureAfterFreshStartTest}}, if the freshly replicated node does not go
into replication recovery after the leader failure, contents {{replication.properties}} should
not change 



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