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https://issues.apache.org/jira/browse/CALCITE-2106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhen wang updated CALCITE-2106:
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Comment: was deleted
(was: [~vladimir.dolzhenko] what's your expected behavior here? more
friendly/specific error message ?)
> Where IN clause performs in memory filtration with > 20 values
> --------------------------------------------------------------
>
> Key: CALCITE-2106
> URL: https://issues.apache.org/jira/browse/CALCITE-2106
> Project: Calcite
> Issue Type: Bug
> Reporter: Vladimir Dolzhenko
> Assignee: Julian Hyde
> Priority: Major
>
> Let's say we have a query
> {code}
> select id, name, somevalue from table where name in (...)
> {code}
> SqlToRelConverter has the limitation of 20 items for IN-clause - and
> therefore query plans looks like TableScan with further EnumerableValues
> (that implies entire table load into the memory).
> In case with Mongo (and I think many other cases that contains huge amount of
> data) it could
> lead to OOM while native (for data source) IN is available .
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