[
https://issues.apache.org/jira/browse/HIVE-11394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Matt McCline updated HIVE-11394:
--------------------------------
Status: In Progress (was: Patch Available)
> Enhance EXPLAIN display for vectorization
> -----------------------------------------
>
> Key: HIVE-11394
> URL: https://issues.apache.org/jira/browse/HIVE-11394
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-11394.01.patch, HIVE-11394.02.patch,
> HIVE-11394.03.patch, HIVE-11394.04.patch, HIVE-11394.05.patch,
> HIVE-11394.06.patch, HIVE-11394.07.patch, HIVE-11394.08.patch,
> HIVE-11394.09.patch
>
>
> Add detail to the EXPLAIN output showing why a Map and Reduce work is not
> vectorized.
> New syntax is: EXPLAIN VECTORIZATION \[ONLY\]
> \[SUMMARY|OPERATOR|EXPRESSION|DETAIL\]
> The ONLY option suppresses most non-vectorization elements.
> SUMMARY shows vectorization information for the PLAN (is vectorization
> enabled) and a summary of Map and Reduce work.
> OPERATOR shows vectorization information for operators. E.g. Filter
> Vectorization. It includes all information of SUMMARY, too.
> EXPRESSION shows vectorization information for expressions. E.g.
> predicateExpression. It includes all information of SUMMARY and OPERATOR,
> too.
> DETAIL shows very vectorization information.
> It includes all information of SUMMARY, OPERATOR, and EXPRESSION too.
> The optional clause defaults are not ONLY and SUMMARY.
> Here are some examples:
> EXPLAIN VECTORIZATION example:
> (Note the PLAN VECTORIZATION, Map Vectorization, Reduce Vectorization
> sections)
> Since SUMMARY is the default, it is the output of EXPLAIN VECTORIZATION
> SUMMARY.
> {code}
> coming soon…
> {code}
> EXPLAIN VECTORIZATION OPERATOR
> Notice the added Select Vectorization, Group By Vectorization, Reduce Sink
> Vectorization sections in this example.
> {code}
> coming soon…
> {code}
> EXPLAIN VECTORIZATION EXPRESSION
> Notice the aaaaa in this example.
> {code}
> coming soon…
> {code}
> EXPLAIN VECTORIZATION DETAIL
> Notice the aaaaa in this example.
> {code}
> coming soon…
> {code}
> EXPLAIN VECTORIZATION ONLY example:
> {code}
> coming soon…
> {code}
> EXPLAIN VECTORIZATION ONLY OPERATOR example:
> {code}
> coming soon…
> {code}
> EXPLAIN VECTORIZATION ONLY EXPRESSION example:
> {code}
> {code}
> EXPLAIN VECTORIZATION ONLY DETAIL example:
> {code}
> coming soon…
> {code}
> The standard @Explain Annotation Type is used. A new 'vectorization'
> annotation marks each new class and method.
> Works for FORMATTED, like other non-vectorization EXPLAIN variations.
> EXPLAIN VECTORIZATION FORMATTED example:
> {code}
> coming soon…
> {code}
> or pretty printed:
> {code}
> coming soon…
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
