batch range sort support

Posted by Benchao Li on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/batch-range-sort-support-tp34600.html

Hi,

Currently the sort operator in blink planner is global, which has bottleneck if we sort a lot of data.

And I found 'table.exec.range-sort.enabled' config in BatchExecSortRule, which makes me very exciting. 

After enabling this config, I found that it's not implemented completely now. This config changes the distribution

 from SINGLETON to range for sort operator, however in BatchExecExchange we do not deal with range 

distribution, and will throw UnsupportedOperationException.

My question is,

1. Is this config just a mistake when we merge blink into flink, and we actually didn't plan to implement this?

2. If this is in the plan, then which version may we expect it to be ready?

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