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https://issues.apache.org/jira/browse/CALCITE-7731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ruben Q L reassigned CALCITE-7731:
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Assignee: Ruben Q L
> Bound plain-notation expansion of DECIMAL literals to prevent parse-time
> OutOfMemoryError
> -----------------------------------------------------------------------------------------
>
> Key: CALCITE-7731
> URL: https://issues.apache.org/jira/browse/CALCITE-7731
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Ruben Q L
> Assignee: Ruben Q L
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.43.0
>
>
> BigDecimal accepts any int exponent, so a DECIMAL literal such as {{DECIMAL
> '1E2147483647'}} (~30 characters) parses to a BigDecimal whose plain-notation
> form would be one character per digit: a multi-gigabyte allocation
> (potentially an OOM error).
> Three places call BigDecimal.toPlainString() on a value derived from
> user-supplied input and would attempt that allocation:
> - SqlParserUtil.parseDecimalLiteral
> - SqlNumericLiteral.toValue
> - RexBuilder.makeLiteral
> It would be required to add a check in there to prevent an OOM error.
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