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Posted to issues@spark.apache.org by "Adrian Wang (JIRA)" <ji...@apache.org> on 2019/01/29 09:01:00 UTC

[jira] [Created] (SPARK-26764) [SPIP] Spark Relational Cache

Adrian Wang created SPARK-26764:
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             Summary: [SPIP] Spark Relational Cache
                 Key: SPARK-26764
                 URL: https://issues.apache.org/jira/browse/SPARK-26764
             Project: Spark
          Issue Type: New Feature
          Components: SQL
    Affects Versions: 2.4.0
            Reporter: Adrian Wang
         Attachments: Relational+Cache+SPIP.pdf

In modern database systems, relational cache is a common technology to boost ad-hoc queries. While Spark provides cache natively, Spark SQL should be able to utilize the relationship between relations to boost all possible queries. In this SPIP, we will make Spark be able to utilize all defined cached relations if possible, without explicit substitution in user query, as well as keep some user defined cache available in different sessions. Materialized views in many database systems provide similar function.



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