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https://issues.apache.org/jira/browse/SOLR-11003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16143935#comment-16143935
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Amrit Sarkar commented on SOLR-11003:
-------------------------------------
Though the tests which are constantly failing I mentioned above, do *Solr Core
reload every second when it waits for target to sync*. It can very well be
variant of SOLR-11034 and/or SOLR-11035, as we can see occasional NPE at
IndexFetcher.java:753.
> Enabling bi-directional CDCR active-active clusters
> ---------------------------------------------------
>
> 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: sample-configs.zip, SOLR-11003.patch, SOLR-11003.patch,
> SOLR-11003.patch, SOLR-11003.patch, SOLR-11003.patch,
> SOLR-11003-tlogutils.patch
>
>
> 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.
> ClusterACollectionA => ClusterBCollectionB | ClusterBCollectionB =>
> ClusterACollectionA.
> The best use-case would be to we 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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