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Posted to issues@ignite.apache.org by "Konstantin Orlov (Jira)" <ji...@apache.org> on 2022/11/22 10:44:00 UTC

[jira] [Created] (IGNITE-18224) Sql. Allow hash output distribution for SET relations

Konstantin Orlov created IGNITE-18224:
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             Summary: Sql. Allow hash output distribution for SET relations
                 Key: IGNITE-18224
                 URL: https://issues.apache.org/jira/browse/IGNITE-18224
             Project: Ignite
          Issue Type: Improvement
          Components: sql
            Reporter: Konstantin Orlov


Currently, we allow only single output distribution for SET operations, but looks like if we have hash input distribution and projected columns contains all of the distribution keys we can execute SET operator on remote nodes and produce hash output distribution with the same keys. This will reduce memory consumption on the initiator node and make some other optimizations possible.
Reference implementation can be found here: IGNITE-16396



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