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https://issues.apache.org/jira/browse/SPARK-10104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009923#comment-15009923
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Russell Alexander Spitzer commented on SPARK-10104:
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Yep, see
https://github.com/datastax/spark-cassandra-connector/blob/master/spark-cassandra-connector/src/main/scala/org/apache/spark/sql/cassandra/CassandraCatalog.scala
This is for the use case where someone has two separate Cassandra Clusters.
This would allow an end user to join data between them. Having the extra
Strings would solve the problem for us. I'll let [~alexliu68] fill in any
details.
> Consolidate different forms of table identifiers
> ------------------------------------------------
>
> Key: SPARK-10104
> URL: https://issues.apache.org/jira/browse/SPARK-10104
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Yin Huai
> Assignee: Wenchen Fan
> Fix For: 1.6.0
>
>
> Right now, we have QualifiedTableName, TableIdentifier, and Seq[String] to
> represent table identifiers. We should only have one form and looks
> TableIdentifier is the best one because it provides methods to get table
> name, database name, return unquoted string, and return quoted string.
> There will be TODOs having "SPARK-10104" in it. Those places need to be
> updated.
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