s3 open seek operation try read rest of file into buffer, which makes following read has timeout risk

Here makes API call to fetch rest of file into buffer when calling seek, which makes seek very slow. The API call may be put in read method instead.

[vuryleo]

I will try that and come back with more detailed info, thanks for helping so far 😃

[mpenkov]

OK, thank you for investigating.

I think your proposal is OK. We can delay this block until read.

Are you able to make a PR? We can probably make a pre-read callback or something to call that code just before reading happens.