[jira] [Commented] (CASSANDRA-17380) Add support for EXPLAIN statements

["maxwellguo (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-17380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17636416#comment-17636416 ] 

maxwellguo commented on CASSANDRA-17380:
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after some these days of solving issues, I found out that it is very nessary to add this feature to c*. I think I should speed up.:)

> Add support for EXPLAIN statements
> ----------------------------------
>
>                 Key: CASSANDRA-17380
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17380
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Benjamin Lerer
>            Assignee: maxwellguo
>            Priority: Normal
>              Labels: gsoc, gsoc2022
>
> We should provide users a way to understand how their query will be executed and some information on the amount of work that will be performed.
> Explain statements are the most common way to do that.
> A CEP Draft has been open for that: [(DRAFT) CEP-4: Explain|https://docs.google.com/document/d/1s_gc4TDYdDbHnYHHVxxjqVVUn3MONUqG6W2JehnC11g/edit]. This draft propose to add support for {{EXPLAIN}} and {{EXPLAIN ANALYZE}} but I believe that we should split the work in 2 parts because a simple {{EXPLAIN}} would already provide relevant information.
> To complete this work I believe that the following steps will be required:
> * Rework and submit the CEP
> * Add missing statistics
> * Implements the logic behind the EXPLAIN statements    



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