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Fixes #1541: HTTPFilesystem has a race condition on data size between the open and read class, if content changes at server between the 2 class #1542

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Fixes #1541: HTTPFilesystem has a race condition on data size between the open and read class, if content changes at server between the 2 class #1542

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8 changes: 2 additions & 6 deletions fsspec/implementations/http.py
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Original file line number Diff line number Diff line change
Expand Up @@ -332,7 +332,6 @@ def _open(
autocommit=None, # XXX: This differs from the base class.
cache_type=None,
cache_options=None,
size=None,
**kwargs,
):
"""Make a file-like object
Expand All @@ -355,16 +354,14 @@ def _open(
kw = self.kwargs.copy()
kw["asynchronous"] = self.asynchronous
kw.update(kwargs)
size = size or self.info(path, **kwargs)["size"]
session = sync(self.loop, self.set_session)
if block_size and size:
if block_size:
return HTTPFile(
self,
path,
session=session,
block_size=block_size,
mode=mode,
size=size,
cache_type=cache_type or self.cache_type,
cache_options=cache_options or self.cache_options,
loop=self.loop,
Expand Down Expand Up @@ -549,7 +546,6 @@ def __init__(
mode="rb",
cache_type="bytes",
cache_options=None,
size=None,
loop=None,
asynchronous=False,
**kwargs,
Expand All @@ -559,7 +555,7 @@ def __init__(
self.asynchronous = asynchronous
self.url = url
self.session = session
self.details = {"name": url, "size": size, "type": "file"}
self.details = {"name": url, "size": None, "type": "file"}
super().__init__(
fs=fs,
path=url,
Expand Down
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