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Use async reader for parsing Apache Arrow responses (#2788) (#2790)

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This commit is contained in:
Josh Mock
2025-04-24 14:25:21 -05:00
committed by GitHub
parent 95cd9b1378
commit 553c41936c
3 changed files with 39 additions and 24 deletions
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4
docs/reference/client-helpers.md
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@ -475,7 +475,7 @@ Added in `v8.16.0`
ES|QL can return results in multiple binary formats, including [Apache Arrow](https://arrow.apache.org/)'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 [`RecordBatchStreamReader`](https://arrow.apache.org/docs/js/classes/Arrow_dom.RecordBatchReader.md).
`toArrowReader` returns an [`AsyncRecordBatchStreamReader`](https://github.com/apache/arrow/blob/520ae44272d491bbb52eb3c9b84864ed7088f11a/js/src/ipc/reader.ts#L216).
```ts
const reader = await client.helpers
@ -483,7 +483,7 @@ 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())
}