From 531bf38c4334a986fc77f126ce39fd98b32a0049 Mon Sep 17 00:00:00 2001
From: Martin Durant <martin.durant@utoronto.ca>
Date: Fri, 25 Jun 2021 12:24:42 -0400
Subject: [PATCH] Allow datasets with fletcher32 checksum

---
 fsspec_reference_maker/hdf.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fsspec_reference_maker/hdf.py b/fsspec_reference_maker/hdf.py
index cc60820a..cf7534e1 100644
--- a/fsspec_reference_maker/hdf.py
+++ b/fsspec_reference_maker/hdf.py
@@ -154,8 +154,7 @@ def _translator(self, name: str, h5obj: Union[h5py.Dataset, h5py.Group]):
                     f'{h5obj.shape} {h5obj.dtype} {h5obj.nbytes} bytes>')
                 return
 
-            if (h5obj.scaleoffset or h5obj.fletcher32 or
-                    h5obj.compression in ('szip', 'lzf')):
+            if (h5obj.scaleoffset or h5obj.compression in ('szip', 'lzf')):
                 raise RuntimeError(
                     f'{h5obj.name} uses unsupported HDF5 filters')
             if h5obj.compression == 'gzip':
@@ -191,6 +190,8 @@ def _translator(self, name: str, h5obj: Union[h5py.Dataset, h5py.Group]):
             # Store chunk location metadata...
             if cinfo:
                 for k, v in cinfo.items():
+                    if h5obj.fletcher32:
+                        v['size'] -= 4
                     self.store[za._chunk_key(k)] = [self._uri, v['offset'], v['size']]
 
         elif isinstance(h5obj, h5py.Group):