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https://issues.apache.org/jira/browse/SOLR-11003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16240498#comment-16240498
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ASF subversion and git services commented on SOLR-11003:
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Commit a0163232edfaa3068c6240a352781e0637f53b1c in lucene-solr's branch
refs/heads/branch_7x from [~varunthacker]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=a016323 ]
SOLR-11003: Improve description of the feature in the CHANGES file
> Enabling bi-directional CDCR on cluster for better failover
> -----------------------------------------------------------
>
> Key: SOLR-11003
> URL: https://issues.apache.org/jira/browse/SOLR-11003
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: CDCR
> Reporter: Amrit Sarkar
> Assignee: Varun Thacker
> Attachments: SOLR-11003-tlogutils.patch, SOLR-11003.patch,
> SOLR-11003.patch, SOLR-11003.patch, SOLR-11003.patch, SOLR-11003.patch,
> SOLR-11003.patch, SOLR-11003.patch, SOLR-11003.patch, SOLR-11003.patch,
> SOLR-11003.patch, SOLR-11003.patch, SOLR-11003.patch, SOLR-11003.patch,
> sample-configs.zip
>
>
> The latest version of Solr CDCR across collections / clusters is in
> active-passive format, where we can index into source collection and the
> updates gets forwarded to the passive one and vice-versa is not supported.
> https://lucene.apache.org/solr/guide/6_6/cross-data-center-replication-cdcr.html
> https://issues.apache.org/jira/browse/SOLR-6273
> We are try to get a design ready to index in both collections and the
> updates gets reflected across the collections in real-time (given the backlog
> of replicating updates to other data center). ClusterACollectionA =>
> ClusterBCollectionB | ClusterBCollectionB => ClusterACollectionA.
> The STRONG RECOMMENDED way to keep indexing in ClusterACollectionA which
> forwards the updates to ClusterBCollectionB. If ClusterACollectionA gets
> down, we point the indexer and searcher application to ClusterBCollectionB.
> Once ClusterACollectionA is up, depending on updates count, they will be
> bootstrapped or forwarded to ClusterACollectionA from ClusterBCollectionB and
> keep indexing on the ClusterBCollectionB.
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