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From "Webster Homer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-11724) Cdcr Bootstrapping does not cause "index copying" to follower nodes on Target
Date Thu, 01 Feb 2018 15:41:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-11724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16348769#comment-16348769
] 

Webster Homer commented on SOLR-11724:
--------------------------------------

We are seeing this behavior in 7.2.0. Sometimes the data shows up in a search, but when I
look there are no index segments. It appears to be searching just tlogs.  

 

This looks like a critical issue to me. 

We observed the same behavior when we deleted all the data from a collection. On;y tlogs show
up and only half are searchable.  The configuration worked with Solr 6.1 but doesn't with
Solr 7.2. We don't see any errors. We see logs of calls to /cdcr LASTPROCESSEDVERSION in the
logs

 

We don't just see this as a bootstrap issue either, we only see about half the data get replicated.
I don't know if tlogs are present on the targets, as I don't have access to those file systems

> Cdcr Bootstrapping does not cause "index copying" to follower nodes on Target
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-11724
>                 URL: https://issues.apache.org/jira/browse/SOLR-11724
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: CDCR
>    Affects Versions: 7.1
>            Reporter: Amrit Sarkar
>            Priority: Major
>         Attachments: SOLR-11724.patch, SOLR-11724.patch
>
>
> Please find the discussion on:
> http://lucene.472066.n3.nabble.com/Issue-with-CDCR-bootstrapping-in-Solr-7-1-td4365258.html
> If we index significant documents in to Source, stop indexing and then start CDCR; bootstrapping
only copies the index to leader node of shards of the collection, and followers never receive
the documents / index until and unless atleast one document is inserted again on source; which
propels to target and target collection trigger index replication to followers.
> This behavior needs to be addressed in proper manner, either at target collection or
while bootstrapping.



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