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https://issues.apache.org/jira/browse/SOLR-6819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Renaud Delbru updated SOLR-6819:
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Attachment: SOLR-6819.patch
A new patch that reverts the original behavior of the update handler regarding
the hdfs update log instantiation, in order to avoid back compatibility problem.
> Being able to configure the updates log implementation from solrconfig.xml
> --------------------------------------------------------------------------
>
> Key: SOLR-6819
> URL: https://issues.apache.org/jira/browse/SOLR-6819
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud, update
> Affects Versions: Trunk
> Reporter: Renaud Delbru
> Attachments: SOLR-6819.patch, SOLR-6819.patch
>
>
> CDCR requires its own implementation of the updates log. At the moment, there
> is no way to configure the class to use when instantiating the updates log.
> The UpdateHandler is deciding to instantiate the base class UpdateLog or its
> hdfs version HdfsUpdateLog based on the directory path prefix.
> We can extend the UpdateHandler to allow for a class parameter to be defined
> for the updateLog section of the solrconfig.xml. For example, the relevant
> part of the solrconfig,xml will look like:
> {code:xml}
> <updateHandler class="solr.DirectUpdateHandler2">
> <updateLog class="solr.CdcrUpdateLog">
> <str name="dir">${solr.ulog.dir:}</str>
> </updateLog>
> </updateHandler>
> {code}
> where the updateLog entry has a parameter class that indicates that the
> CdcrUpdateLog implementation must be used.
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