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Use async reader for parsing Apache Arrow responses (#2788) (#2791)

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This commit is contained in:
Josh Mock
2025-04-24 14:25:10 -05:00
committed by GitHub
parent 955113e51f
commit 3c2f0723d5
3 changed files with 39 additions and 23 deletions
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4
docs/helpers.asciidoc
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@ -715,7 +715,7 @@ const result = await client.helpers
ES|QL can return results in multiple binary formats, including https://arrow.apache.org/[Apache Arrow]'s streaming format. Because it is a very efficient format to read, it can be valuable for performing high-performance in-memory analytics. And, because the response is streamed as batches of records, it can be used to produce aggregations and other calculations on larger-than-memory data sets.
`toArrowReader` returns a https://arrow.apache.org/docs/js/classes/Arrow_dom.RecordBatchReader.html[`RecordBatchStreamReader`].
`toArrowReader` returns a https://github.com/apache/arrow/blob/520ae44272d491bbb52eb3c9b84864ed7088f11a/js/src/ipc/reader.ts#L216[`AsyncRecordBatchStreamReader`].
[source,ts]
----
@ -724,7 +724,7 @@ const reader = await client.helpers
.toArrowReader()
// print each record as JSON
for (const recordBatch of reader) {
for await (const recordBatch of reader) {
for (const record of recordBatch) {
console.log(record.toJSON())
}