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Call cat_ranges in blockcache for async filesystems #1336
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Sorry I let this one slide - I still think it's useful. I have just the one comment above. |
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Can you please solve the conflict, and I can have another look? |
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@martindurant sorry that I abandoned this for so long. I fixed the merge conflicts and updated the tests. Please let me know if you still deem this valuable. |
@@ -37,6 +37,7 @@ | |||
logger = logging.getLogger("fsspec") | |||
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Fetcher = Callable[[int, int], bytes] # Maps (start, end) to bytes | |||
MultiFetcher = Callable[list[[int, int]], bytes] # Maps [(start, end)] to bytes |
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Hi @monken @martindurant,
Unfortunately, this change breaks the usage of this library in Python 3.8. It's simple to reproduce:
from typing import Callable
X = Callable[list[[int, int]], bytes]
Would it be possible to yank 2025.3.1
(at least while support for 3.8 is still being maintained)? Thanks!
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I will yank, but I 2025.3.1 will henceforth only support >=3.9; it should have probably been done before now.
The CachingFileSystem can benefit from calling
cat_ranges
for asynchronous filesystems to concurrently download blocks. This speeds up filling the cache significantly for filesystems like HTTP and S3FS.