feat: adding s3fileio vector reader#14352
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What am I doing
Implementing vectored reading capabilities for S3FileIO, enabling efficient batch reading of multiple file ranges with automatic coalescing to minimize S3 requests.
How am I doing it
Using the Iceberg task manager and a executor thread pool to send requests to s3 concurrently.
Range coalescing works by using a hashmap to link ranges that, it then sends one request and uses one stream to populate the buffers for the linked ranges.
Testing:
• Added some integration tests, will try add a few more, or will try read some more data.
• Ran a benchmark and was happy with the result, will see what I can share later.