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From "Joel Bernstein (JIRA)" <>
Subject [jira] [Commented] (SOLR-6266) Couchbase plug-in for Solr
Date Tue, 23 Sep 2014 16:41:45 GMT


Joel Bernstein commented on SOLR-6266:

Just did a quick review of:

It appears the documents are not forwarded to other CAPIServers automatically. They are just
processed locally, so it is the responsibility of the bulkDocs implementation to handle intra-cluster

So this appears to be the basic flow:

1) Couchbase sets up the initial replication and discovers the available CAPIServers through
the couchbase behavior api.
2) Couchbase replicates each document once across datacenter to one of the available CAPIServers.
(Still needs to be confirmed).
3) The local CAPIServer only forwards the docs to the bulkDocs implementation

If this scenario is correct, then we control the intra-cluster replication ourselves, and
we can run a CAPIServer on each replica without any issues.

> Couchbase plug-in for Solr
> --------------------------
>                 Key: SOLR-6266
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Varun
>            Assignee: Joel Bernstein
>         Attachments: solr-couchbase-plugin.tar.gz, solr-couchbase-plugin.tar.gz
> It would be great if users could connect Couchbase and Solr so that updates to Couchbase
can automatically flow to Solr. Couchbase provides some very nice API's which allow applications
to mimic the behavior of a Couchbase server so that it can receive updates via Couchbase's
normal cross data center replication (XDCR).
> One possible design for this is to create a CouchbaseLoader that extends ContentStreamLoader.
This new loader would embed the couchbase api's that listen for incoming updates from couchbase,
then marshal the couchbase updates into the normal Solr update process. 
> Instead of marshaling couchbase updates into the normal Solr update process, we could
also embed a SolrJ client to relay the request through the http interfaces. This may be necessary
if we have to handle mapping couchbase "buckets" to Solr collections on the Solr side. 

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