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Posted to issues@ignite.apache.org by "Taras Ledkov (Jira)" <ji...@apache.org> on 2020/11/23 10:16:00 UTC

[jira] [Updated] (IGNITE-13744) Use TableSpool for IgniteNestedLoopJoin

     [ https://issues.apache.org/jira/browse/IGNITE-13744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Taras Ledkov updated IGNITE-13744:
----------------------------------
    Summary: Use TableSpool for IgniteNestedLoopJoin  (was: Use Table spool for IgniteNestedLoopJoin)

> Use TableSpool 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
>            Priority: Major
>
> 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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