Thanks for looking into this Nicklas. I'll go with your suggestion
and split into smaller files.
/Adam
On Nov 23, 2007, at 8:11 PM, Nicklas Nordborg wrote:
I did some test by inserting some debug statements the first thing in
the upload script. I tested this on Windows with Firefox 2.0.0.9 and
Microsoft IE 7.0 by uploading a 5.74GB (6 169 509 888 bytes) file.
With Firefox it seems like the upload script never gets called at all.
Nothing happens and no debug output is seen.
With IE the file starts to upload but the file is reported as 1.7
GB (1
874 544 014 bytes). The upload stops when that number is reached and
appears as a file in BASE (with the size 1.7 GB). In my debug output I
can see that IE is actually setting the content-length header to
1874544014, which is approximately what you get if you just chop of
the
last 4 bytes of the actual file size.
I found a page with some information of the problem:
http://www.motobit.com/help/scptutl/pa98.htm
So, I guess it is a browser-related problem or maybe a limitation
of the
HTTP specification. You have to split the file into smaller chunks
before uploading them.
/Nicklas
Nicklas Nordborg wrote:
Adam Ameur wrote:
Hi,
I encountered a problem when trying to upload a 3.6 GB zip file
containing raw data from about 100 high density Affymetrix arrays in
BASE2.4.6. In Firefox the data transfer doesn't seem to start at
all.
Using Safari the upload got started but the file never showed up in
BASE. Are there any limitations in file size when uploading to
BASE, or
is this only a browser specific problem? I know this data set is
extremely big but I hope that it's anyway possible to upload and
store
it in BASE.
I really don't know if it is a browser specific problem, a BASE
problem
or a limitation in the underlying operating system of the server. I
guess most operating systems support larger files so the last not
likely. In any case, do you see any error messages in Tomcat's log
file
that seem related to this?
The only thing I can think of on the BASE side is that the content
size
is only available as an integer in the Servlet API, which can hold
a max
value around 2GB. I don't know what happens if the content size is
larger, but I think the progress bar may get confused if it gets a
negative value or no value at all.
/Nicklas
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Adam Ameur, PhD student
The Linnaeus Centre for Bioinformatics
Uppsala University
BMC, Box 598, SE-751 24 Uppsala, Sweden
phone: +46 18 471 66 86 (admin: 66 90)
fax: +46 18 471 66 98
office: BMC, C6:315a
email:[EMAIL PROTECTED]
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