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From "Taras Ledkov (Jira)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-13744) Use Table spool for IgniteNestedLoopJoin
Date Mon, 23 Nov 2020 10:15:00 GMT
Taras Ledkov created IGNITE-13744:
-------------------------------------

             Summary: Use Table spool for IgniteNestedLoopJoin
                 Key: IGNITE-13744
                 URL: https://issues.apache.org/jira/browse/IGNITE-13744
             Project: Ignite
          Issue Type: Bug
          Components: sql
            Reporter: Taras Ledkov
            Assignee: Taras Ledkov


Now {{NestedLoopJoinNode}} uses internal buffer to save all rows of the right input.
We have to do refactoring {{IgniteNestedLoopJoin}} to use rewind of the right input and use
TableSpool for not rewindable inputs.

This refactoring separates implementation the join logic from materialization of the right
input if it is needed. In the future we can use disk offload for TableSpool etc.



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