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From "Mike Drob (JIRA)" <>
Subject [jira] [Created] (SOLR-7734) MapReduce Indexer can error when using collection
Date Mon, 29 Jun 2015 20:03:06 GMT
Mike Drob created SOLR-7734:

             Summary: MapReduce Indexer can error when using collection
                 Key: SOLR-7734
             Project: Solr
          Issue Type: Bug
          Components: contrib - MapReduce
    Affects Versions: 5.2.1
            Reporter: Mike Drob
             Fix For: 5.3, Trunk

When running the MapReduceIndexerTool, it will usually pull a {{solrconfig.xml}} from ZK for
the collection that it is running against. This can be problematic for several reasons:

* Performance: The configuration in ZK will likely have several query handlers, and lots of
other components that don't make sense in an indexing-only use of EmbeddedSolrServer (ESS).
* Classpath Resources: If the Solr services are using some kind of additional service (such
as Sentry for auth) then the indexer will not have access to the necessary configurations
without the user jumping through several hoops.
* Distinct Configuration Needs: Enabling Soft Commits on the ESS doesn't make sense. There's
other configurations that 
* Update Chain Behaviours: I'm under the impression that UpdateChains may behave differently
in ESS than a SolrCloud cluster. Is it safe to depend on consistent behaviour here?

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