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From "Kurt Young (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (FLINK-12018) Add support for generating optimized logical plan for Sort and Rank
Date Mon, 01 Apr 2019 08:29:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-12018?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kurt Young closed FLINK-12018.
------------------------------
       Resolution: Fixed
    Fix Version/s: 1.9.0

fixed in 3dabd68d18212acba9b25925f698ee344672bd56

> Add support for generating optimized logical plan for Sort and Rank
> -------------------------------------------------------------------
>
>                 Key: FLINK-12018
>                 URL: https://issues.apache.org/jira/browse/FLINK-12018
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Planner
>            Reporter: godfrey he
>            Assignee: godfrey he
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.9.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Add support for generating optimized logical plan for Sort and Rank.
> There is a summary of Sort and Rank converters:
> for batch, 
> 1. Sort without sort fields, fetch and offset will be converted to BatchExecLimit
> 2. Sort with sort fields, null-fetch and null-offset will be converted to BatchExecSort
> 3. otherwise, Sort will be converted to BatchExecSortLimit
> 4. RANK function on over with filter will be converted to BatchExecRank
> for stream,
> 1. Sort with time-ascending-order and non-limit will be converted to StreamExecTemporalSort
> 2. Sort with limit will be converted to StreamExecRank
> 3. Sort which is sorted on proc-time attribute and fetches only one record start from
0 will be converted to StreamExecFirstLastRow
> 4. otherwise, Sort will be converted to StreamExecSort
> 5.  RANK function on over with filter will be converted to StreamExecRank
> 6. Rank with ROW_NUMBER function which is sorted on proc-time attribute and fetches only
one record start from 0 will be converted to StreamExecFirstLastRow



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