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From "Karol Abramczyk (JIRA)" <>
Subject [jira] [Commented] (SOLR-6266) Couchbase plug-in for Solr
Date Mon, 22 Sep 2014 10:21:34 GMT


Karol Abramczyk commented on SOLR-6266:


My plan was to collect Couchbase data with a single Solr shard leader (to start with) and
let Solr replicate the data to the other replicas. I think that running CAPIServer on all
replicas is pointless, as at the end they will send all received documents to the shard leader
to index it. And this would cause increased network load because of the communication between
Couchase servers and all the CAPIServers on replicas and also between the Solr replicas and
Solr shards. I also wasn't sure if running CAPIServer on multiple replicas would result in
indexing one document multiple times with different IDs. However, it could be useful to run
CAPIServer on all shard leaders, but it would require the shard leader to calculate if the
received document should be indexed in it. 

> 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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