[
https://issues.apache.org/jira/browse/SPARK-3212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Michael Armbrust reassigned SPARK-3212:
---------------------------------------
Assignee: Michael Armbrust
> Improve the clarity of caching semantics
> ----------------------------------------
>
> Key: SPARK-3212
> URL: https://issues.apache.org/jira/browse/SPARK-3212
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Michael Armbrust
> Assignee: Michael Armbrust
> Priority: Blocker
>
> Right now there are a bunch of different ways to cache tables in Spark SQL.
> For example:
> - tweets.cache()
> - sql("SELECT * FROM tweets").cache()
> - table("tweets").cache()
> - tweets.cache().registerTempTable(tweets)
> - sql("CACHE TABLE tweets")
> - cacheTable("tweets")
> Each of the above commands has subtly different semantics, leading to a very
> confusing user experience. Ideally, we would stop doing caching based on
> simple tables names and instead have a phase of optimization that does
> intelligent matching of query plans with available cached data.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
