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Re: [EP-tech] Problems with view generation: EPrints System Error

What's in the 'person_view_name' field?  I'm guessing this is a an automatic value derived from eprint metadata.  Can you post the code that generates it?

 

Jisc

Adam Field
SHERPA services analyst developer

From: <eprints-tech-bounces@ecs.soton.ac.uk> on behalf of Verena Mattes <verena.mattes@ub.uni-bayreuth.de>
Reply-To: "eprints-tech@ecs.soton.ac.uk" <eprints-tech@ecs.soton.ac.uk>
Date: Wednesday, 27 April 2016 09:50
To: "eprints-tech@ecs.soton.ac.uk" <eprints-tech@ecs.soton.ac.uk>
Subject: Re: [EP-tech] Problems with view generation: EPrints System Error

Hi Adam,

For now, my colleagues in the IT service centre solved the problem by
raising the number of files permitted in one directory on our Netapp,
but that is only a temporary solution. Almost 340.000 files in one
directory are just too many, so I'll have to find a way to split the
person view into groups somehow.

Your suggestion of checking the number of variations should be a first
step in reducing the number of files. Here's our current view
configuration, which I'm going to change by taking away the DEFAULT
variation:

        {
                 id => "person",
                 hideempty => 0,
                 allow_null => 0,
                 menus => [
                         {
                                 fields => [ "person_view_name" ],
                                 mode => "sections",
                                 grouping_function => "EPrints::Update::Views::group_by_first_character",
                                 group_range_function => "EPrints::Update::Views::cluster_ranges_40",
                                 new_column_at => [40],
                                 open_first_section => 1,
                         },
                         ],
                 order => "-date;res=year/title/publication/book_title",
                 hideup => 0,
                 nocount => 0,
                 notimestamp => 0,
                 include => 1,
                 variations => [
                         "type",
                         "date;truncate=4,reverse",
                         "DEFAULT",
                 ],
                 citation => "view",            # Views mit Volltext-Hinweis!
         },

Thanks for all your help!

Verena


Message: 1
Date: Tue, 26 Apr 2016 08:35:49 +0000
From: Adam Field <Adam.Field@jisc.ac.uk>
Subject: Re: [EP-tech] Problems with view generation: EPrints System
Error
Content-Type: text/plain; charset="utf-8"

My previous suggestion wasn't right and won't work exactly as expected on reflection.

What happens when you run generate_views from the command line?
Just how many files do you have in the directory on the hard disk?

Can you paste in the browse view configuration?  It may be that turning of variations will solve this.


Adam Field
SHERPA services analyst developer


Date: Tuesday, 26 April 2016 07:48
Subject: Re: [EP-tech] Problems with view generation: EPrints System Error

Hi Alan and Adam,

Thanks for your suggestions. We are running EPrints 3.3.11 and the free
space on our hard disk is not a problem. I checked with a colleague and
he confirmed my guess that the problem is caused by the number of files
in the directory, obviously the maximum number was reached last week and
no further files can be created.
Does anybody have a quick idea on how to divide files for one view, the
person view, to different directories? Would it be possible to define
different views for groups of letters, e.g. A-D or something like that?

Thanks!

Verena



Date: Mon, 25 Apr 2016 10:58:47 +0000
Subject: Re: [EP-tech] Problems with view generation: EPrints System
Error
Content-Type: text/plain; charset="utf-8"

What specific version of EPrints are you running?  What is line 1550 of /usr/share/eprints3/perl_lib/EPrints/Update/Views.pm

Also, silly question, but how much free space do you have on your hard disk?


Adam Field
SHERPA services analyst developer


Date: Monday, 25 April 2016 09:51
Subject: [EP-tech] Problems with view generation: EPrints System Error

Hello,

since last week, we've had problems with the view generation for our
author/person view. These problems specifically concern the views for
new author names, which are not generated, while the views for already
existing author names are updated.

For each author name concerned, there is an entry in the apache error log:

Error writing to /usr/share/eprints3/archives/ubt_eref/html/de/view/person/Kaiser=3AMario=3A=3A.export: File too large
------------------------------------------------------------------
      at /usr/share/eprints3/perl_lib/EPrints/Update/Views.pm line 1550
             EPrints::Update::Views::output_files('EPrints::Repository=HASH(0x7fb0663688d0)', '/usr/share/eprints3/archives/ubt_eref/html/de/view/person/Kai...', 'XML::LibXML::DocumentFragment=SCALAR(0x7fb06a7e5938)', '/usr/share/eprints3/archives/ubt_eref/html/de/view/person/Kai...', 'XML::LibXML::Element=SCALAR(0x7fb06a45f160)', '/usr/share/eprints3/archives/ubt_eref/html/de/view/person/Kai...', 'XML::LibXML::DocumentFragment=SCALAR(0x7fb06a7e5938)', '/usr/share/eprints3/archives/ubt_eref/html/de/view/person/Kai...', 'XML::LibXML::DocumentFragment=SCALAR(0x7fb06a668aa8)', ...) called at /usr/share/eprints3/perl_lib/EPrints/Update/Views.pm line 935
             EPrints::Update::Views::update_view_list('EPrints::Repository=HASH(0x7fb0663688d0)', '/usr/share/eprints3/archives/ubt_eref/html/de/view/person/Kai...', 'de', 'EPrints::Update::Views=HASH(0x7fb06a6863f0)', 'ARRAY(0x7fb064b78c70)') called at /usr/share/eprints3/perl_lib/EPrints/Update/Views.pm line 259
             EPrints::Update::Views::update_view_file('EPrints::Repository=HASH(0x7fb0663688d0)', 'de', '/view/person/Kaiser=3AMario=3A=3A.html', '/view/person/Kaiser=3AMario=3A=3A.html') called at /usr/share/eprints3/perl_lib/EPrints/Apache/Rewrite.pm line 513
             EPrints::Apache::Rewrite::handler('Apache2::RequestRec=SCALAR(0x7fb06a471710)') called at -e line 0
             eval {...} called at -e line 0

In this specific case, the author's name is linked to only 2 EPrints
entries, so it is unlikely that this file would be particularly large.

Does anybody have an idea concerning this? I would appreciate any help.

Thanks!

Verena

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