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https://issues.apache.org/jira/browse/CALCITE-418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14227501#comment-14227501
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Vladimir Sitnikov commented on CALCITE-418:
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It would be nice if interpreter could work in streaming mode.
Currently it buffers all the data, so it might run out of memory if the data
set is big.
> Finish implementation of Interpreter
> ------------------------------------
>
> Key: CALCITE-418
> URL: https://issues.apache.org/jira/browse/CALCITE-418
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
>
> In OPTIQ-416, we added the Interpreter class. It is able to handle RelNode
> types scan (over array-table at least), filter, project, values, sort; and
> RexNode types literal, inputRef, and calls to < and >.
> This task is to complete implementation of the interpreter. This includes
> implementations of aggregate, join, union, minus, intersect, correlator
> RelNodes and of the set of built-in operators.
> To prove that the interpreter is working, add a test that executes several
> complex queries over small data sets. (Maybe run the foodmart queries
> manually?) Also add a sub-class of SqlOperatorTest that interprets rather
> than generating code.
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