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https://issues.apache.org/jira/browse/SPARK-17767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15543319#comment-15543319
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Dongjoon Hyun commented on SPARK-17767:
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It seems that custom external catalog supporting becomes simpler in Spark 2.1.0
after SPARK-17190.
For the external catalog based on Hive classes, we can override easily by
parameterizing some private string variable into SQLConf. I'll make a PR for a
first attempt.
> Spark SQL ExternalCatalog API custom implementation support
> -----------------------------------------------------------
>
> Key: SPARK-17767
> URL: https://issues.apache.org/jira/browse/SPARK-17767
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Alex Liu
>
> There is no way/easy way to configure Spark to use customized
> ExternalCatalog. Internal source code is hardcoded to use either hive or
> in-memory metastore. Spark SQL thriftserver is hardcoded to use
> HiveExternalCatalog. We should be able to create a custom external catalog
> and thriftserver should be able to use it. Potentially Spark SQL thriftserver
> shouldn't depend on Hive thriftserer.
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