[ARROW-13271] [JS] DataFrame Count By - TypeError: df.countBy is not a function

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Duplicate
• Component/s: JavaScript
• External issue URL: https://github.com/apache/arrow/issues/28952
• Assignee: Diana Clarke
• Reporter: Diana Clarke
• Created: 06/Jul/21 22:46
• Updated: 11/Jan/23 08:32
• Resolved: 07/Jul/21 01:45

Description

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

    b.suite(
        `DataFrame Count By`,

        ...countBys.map((column: string) => b.add(
            `dataset: ${name}, column: ${column}, length: ${formatNumber(df.length)}, type: ${df.schema.fields.find((c)=> c.name === column)!.type}`,
            () => df.countBy(column)
        )),

        b.cycle(cycle)
    );