Comments (3)
If it can help you, I managed to do it by using pure stream, but I don't know if appendRow
is compatible with stream mode:
- I receive my stream from a request, here I will name it
sourceStream
(you need to create your ownReadable
stream I guess) - I create a
ParquetTransformer
, here I will name itparquetStream
and pipe it tosourceStream
- I create an AWS S3
putObjectRequest
with the stream asBody
, using the official AWS SDK
// say we already have sourceStream and `parquetStream`
s3Bucket.upload({
Bucket: 'bucketName',
Key: 'path/of/the/file',
Body: sourceStream.pipe(parquetStream)
}); // here I do a .promise() but this is for my usage
Using stream can have the advantage of saving RAM.
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@sambonbonne, my friend!
Can you put a more complete example, please!
I don't understand anything about stream.
Thank you very much!
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@eliasrosa I'm sorry, I don't know how to make a more complete example. I can add some variables or something but I'm not sure it will help:
const parquetStream = new ParquetTransformer({ /* your parquet and transform parameters */ });
// saying you already have a Readable source stream as sourceStream
const conversionStream = sourceStream.pipe(parquetStream);
s3Bucket.upload({
Bucket: 'bucketName',
Key: 'path/of/the/file',
Body: conversionStream
});
I don't want to discourage you but I think you should not try to use streams without understanding those. Streams are important in NodeJS and have multiple advantages, maybe learning more about streams would be useful for you if you use NodeJS.
(I hope you won't take this answer as an attack, I just don't know how I can help better)
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Related Issues (20)
- Unable to mock module using Jest HOT 1
- ParquetTransformer stream doesn't emit error HOT 1
- Cannot write a parquet file having a comma in one of its headers HOT 1
- Parquet file parsing error HOT 2
- Any way to Read parquet records before appending to file HOT 2
- os.close is not a function HOT 3
- parquet write to s3 is not queryable by Athena HOT 4
- Streaming new records into an existing parquet file in S3 HOT 5
- Issue with decodeRunRepeated
- is it a unmaintained Package? HOT 2
- invalid parquet version - parquet-cpp
- How to read the latest value?
- Streaming read HOT 1
- How to preview/read head of a compressed parquet file?
- Write multiple rows in bulk
- React native HOT 1
- Cannot use 'in' operator to search error HOT 1
- [NodeJS] RangeError [ERR_OUT_OF_RANGE] when reading a parquet file HOT 4
- invalid parquet version error for parquet files generated via python script HOT 3
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