[ARROW-13270] [JS] DataFrame Filter-Scan Count - TypeError: df.filter is not a function

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Duplicate
• Component/s: JavaScript
• External issue URL: https://github.com/apache/arrow/issues/28951
• Assignee: Diana Clarke
• Reporter: Diana Clarke
• Created: 06/Jul/21 22:44
• Updated: 11/Jan/23 08:32
• Resolved: 07/Jul/21 01:45

Description

The following benchmark fails with TypeError: df.filter is not a function.

    b.suite(
        `DataFrame Filter-Scan Count`,

        ...counts.map(({ column, test, value }: {column: string; test: 'gt' | 'eq'; value: number | string}) => b.add(
            `dataset: ${name}, column: ${column}, length: ${formatNumber(df.length)}, type: ${df.schema.fields.find((c)=> c.name === column)!.type}, test: ${test}, value: ${value}`,
            () => {
                let filteredDf: Arrow.FilteredDataFrame;
                if (test == 'gt') {
                    filteredDf = df.filter(col(column).gt(value));
                } else if (test == 'eq') {
                    filteredDf = df.filter(col(column).eq(value));
                } else {
                    throw new Error(`Unrecognized test "${test}"`);
                }

                return () => filteredDf.count();
            }
        )),

        b.cycle(cycle)
    );