On Oct 21 2016, jingjie li <[email protected]> wrote:
> I test the time of block A(size is 2G)transferred is about 3
> minutes. The time is more than 10 seconds. So I think Block B should
> be uploaded to backend. But it didn't. Does it has any other reasons
> for this?
S3QL doesn't upload blocks of pure zeros if it knows about them. If
extend the file length by more than a block, S3QL knows there's nothing
but zeros there.
But I don't think this discussion is going anywhere useful. If you want
to know what is happening, you need to look at the application that
writes the data. Once you know what exactly that application does, it'll
be easy to say why S3QL does what it does. But as long as you only look
at the final result, the best we can do is speculate.
Also, why don't you use compression, smaller block size, or a different
program to copy the file into S3QL?
Best,
-Nikolaus
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