Tick History Version 2 - Can you verify the uncompressed file size of a file for me?

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Question by noah.kauffman · Dec 08, 2017 at 09:57 AM · tickhistoryv2

Tick History Version 2 - Can you verify the uncompressed file size of a file for me?

I've downloaded the file NYQ-2017-12-05-NORMALIZEDMP-Data-1-of-1.csv.gz from the web services... I notice that the compressed file size is listed as 1,315,264 (e.g. 1.3 GB file) ... However, for some reason, when I uncompress this it uncompresses to 240 MB (specifically, 240,322). Can you tell me what the uncompressed file size of this file is supposed to be?

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Answer 1 · 2017-12-12T02:04:35Z

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Answer by veerapath.rungruengrayubkul · Dec 12, 2017 at 02:04 AM

The uncompressed file size of the file is supposed to be around 24 GB (24,002,128,910 Bytes). I am able to uncompress the file with 7-Zip app. According to gzip manual, the uncompressed size and compression ratio are listed incorrectly for uncompressed files 4 GB and larger. I am not sure if this can be related to the issue.

Which tool/programming did you use to uncompress the file?

Below is the screenshot of the manual.

gzip-manual.png (10.6 KiB)

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Answer 2 · 2017-12-12T09:11:17Z

Answer by noah.kauffman · Dec 12, 2017 at 09:11 AM

Thanks - also what is the compressed file size?

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veerapath.rungruengrayubkul ♦♦ · Dec 12, 2017 at 11:55 PM 0

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The compressed file size is 1,346,830,078 Bytes. It looks different from the file size you provided. Can you re-download the file?

Tick History Version 2 - Can you verify the uncompressed file size of a file for me?

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