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Can't import RDF/XML Data #154

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
I am trying to import a 48.6 MB RDF file but when I do so the page is blank. It 
does not give any error either.
What could be the problem?

Original issue reported on code.google.com by amrapali...@gmail.com on 12 Oct 2010 at 4:25

GoogleCodeExporter commented 8 years ago 
Which version are you running? 1.1? Is it an RDF/XML file? Have you had success 
importing other (smaller) RDF/XML files before? Is this file publicly available 
so we can try it ourselves?

Original comment by dfhu...@gmail.com on 12 Oct 2010 at 5:40

GoogleCodeExporter commented 8 years ago 
Yes, I am using the Refine-1.1-r878.dmg version for MAC.
It is an RDF/XML file. 
I have not tried importing a smaller file earlier.
This file is not publicly available though..is it because of the size?

Original comment by amrapali...@gmail.com on 12 Oct 2010 at 6:47

GoogleCodeExporter commented 8 years ago 
There was certainly a bug in the XML importer in version 1.1. Could you wait 
until version 2.0 (due in a couple of weeks), or otherwise check out the trunk/ 
version? Instructions: 
http://code.google.com/p/google-refine/wiki/GetDevelopmentVersion

Original comment by dfhu...@google.com on 13 Oct 2010 at 4:52

GoogleCodeExporter commented 8 years ago 
Ok, Thanks.

Original comment by amrapali...@gmail.com on 13 Oct 2010 at 6:59

GoogleCodeExporter commented 8 years ago

Original comment by iainsproat on 14 Oct 2010 at 4:57

GoogleCodeExporter commented 8 years ago 
Hi,
I updated to the new version and tried upload the RDF/XML file but it still did 
not load the data.
Please could you look into it.
Thanks.

Original comment by amrapali...@gmail.com on 12 Nov 2010 at 3:10

GoogleCodeExporter commented 8 years ago 
I think the size of the file is indeed leading to the problem with the blank 
screen.  Tom Morris is trying to work on a notification to warn users that you 
might not have enough memory allocated or that the file size might be to large 
to handle with your current configuration.

  Amrapali, I would like to see if you could allocate more memory to Refine with the instructions here in our FAQ http://code.google.com/p/google-refine/wiki/FaqAllocateMoreMemory and then let us know if it changes anything ?  Also what is your current machine configuration and RAM capability ?  (David, to bad we can't capture that stuff automatically when users open an issue!)

Original comment by thadguidry on 12 Nov 2010 at 3:27

GoogleCodeExporter commented 8 years ago 
Hi, I followed the instructions for allocating more memory to Refine but my VM 
Options was already set to -Xms256M -Xmx1024M -Drefine.version=r1836, which is 
similar to what is expected to be changed. I am using a MAC with Intel Core 2 
Duo (64 bit) with 2 GB RAM.
Thanks.

Original comment by amrapali...@gmail.com on 13 Nov 2010 at 3:34

GoogleCodeExporter commented 8 years ago 
Hi, 
 I'm using the 2.5 version of refine and I'm having the same problem also with file of 4 Mb (rdf/XML) or 400kb (RDF/N3).
In both cases I get a empty preview and nothing seems to be imported.

Did you now know what is the couse?
Thanks.

Original comment by matteo.b...@gmail.com on 26 Jul 2012 at 3:19

GoogleCodeExporter commented 8 years ago 
Hi,
The size of the file is indeed the cause of the problem of getting an empty 
preview. 
Maybe you need to split the file and then upload in batches.
Hope that helps !

Original comment by amrapali...@gmail.com on 1 Aug 2012 at 2:50

GoogleCodeExporter commented 8 years ago 
I don't think it could be only a metter of file size because (as I said in the 
last post) I also tried with a 400K n3 file and the result seems to be the same.

Any other idea?

Original comment by matteo.b...@gmail.com on 1 Aug 2012 at 3:09

GoogleCodeExporter commented 8 years ago 
Matteo - please use the mailing list for question.  If you're pretty sure it's 
a bug, please create a new issue and, if possible, attach your file.  A 400 KB 
N3 file, when compressed, should be small enough to attach to your bug report.

Amrapali - Did you successfully resolve your original problem from 2010?  If 
not, could you retest with the current version of Refine (2.5).  I'd like to 
close this issue if possible.

Original comment by tfmorris on 1 Aug 2012 at 4:23

GoogleCodeExporter commented 8 years ago 
Yes, I tried with the latest version of google refine and now it works.
Thanks.

Original comment by amrapali...@gmail.com on 2 Aug 2012 at 1:31

GoogleCodeExporter commented 8 years ago 
As far as I can tell we never implement an RDF/XML importer, only NTriples 
support.  There was an additional issue with the way the UI was wired up (issue 
599), but even without that, things wouldn't have worked.

I've added support for RDF/XML and N3 formats and will check it in after a 
little more testing.

Original comment by tfmorris on 4 Aug 2012 at 11:40

GoogleCodeExporter commented 8 years ago 
I've added RDF/XML support in r2526.  All the plumbing is there for RDF N3 
support too, but there is no UI for it currently.  RDF/XML and RDF Ntriples are 
the two supported RDF formats currently.

Sorry about the confusion.  The developer who did the initial RDF support isn't 
currently active and none of the rest of us really use RDF at all, so we 
weren't aware of the state it was in.

Note also that the XML importer is able to import RDF/XML files as well and in 
some cases may be preferable.  It's worth previewing both importers to see 
which one best suits your needs.

Original comment by tfmorris on 5 Aug 2012 at 4:39

GoogleCodeExporter commented 8 years ago

Original comment by tfmorris on 18 Sep 2012 at 3:05