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Large NDPI files fail to open with java.lang.ClassCastException #3725

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sbesson opened this issue Sep 7, 2021 · 0 comments · Fixed by #3852
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Large NDPI files fail to open with java.lang.ClassCastException #3725

sbesson opened this issue Sep 7, 2021 · 0 comments · Fixed by #3852
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bug Something isn't working reader:NDPI

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sbesson commented Sep 7, 2021

Reported via QA 30384, some large NDPI files (>4GB) fail to open with the following stack trace

java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Number
	at loci.formats.in.NDPIReader.initStandardMetadata(NDPIReader.java:381)
	at loci.formats.in.BaseTiffReader.initMetadata(BaseTiffReader.java:97)
	at loci.formats.in.BaseTiffReader.initFile(BaseTiffReader.java:586)
	at loci.formats.in.NDPIReader.initFile(NDPIReader.java:311)

Two representative NDPI samples have been uploaded (as multi-part) as https://doi.org/10.5281/zenodo.5337013.

Support for large NDPI files (>4GB) had been improved in #3505 but the latest released version of Bio-Formats (6.7.0) still fails against these files. tiffinfo sanity checks also fail against these files. However the files themselves load without problem into Hamamatsu NDP.View2.
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NDPI: fix non-number tag handling for files > 4GB melissalinkert/bioformats
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