Databases
StackOverflow2013
Postsdbo
POSpreadsheet::ParseExcel::Stream losing its parser
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POSpreadsheet::ParseExcel::Stream losing its parser
    primarykey
    data
    text
    <p>I have an 18M Excel spreadsheet to parse and <code>Spreadsheet::ParseExcel</code> was consuming so much memory that it I had to switch to <a href="https://metacpan.org/module/Spreadsheet::ParseExcel::Stream" rel="nofollow noreferrer">Spreadsheet::ParseExcel::Stream</a>. It works fine on my VM, it works fine on our staging server, but on our production server (configured the same way), I get this error:</p> <pre><code>Can't call method "transfer" on an undefined value at \ lib/Spreadsheet/ParseExcel/Stream/XLS.pm line 31. </code></pre> <p>That comes from the following bit of code:</p> <pre><code>my ($wb, $idx, $row, $col, $cell); my $tmp = my $handler = sub { ($wb, $idx, $row, $col, $cell) = @_; $parser-&gt;transfer($main); XXX here's where we die }; my $tmp_p = $parser = Coro::State-&gt;new(sub { $xls-&gt;Parse($file); # Flag the generator that we're done undef $xls; # If we don't transfer back when done parsing, # it's an implicit program exit (oops!) $parser-&gt;transfer($main) }); weaken($parser); </code></pre> <p>The <code>weaken</code> looked suspicious, so I tried not weakening unless the refcount was greater than 1, but the same problem happens. I instrumented the code to get a stacktrace and got this:</p> <pre><code>parser is undefined at lib/Spreadsheet/ParseExcel/Stream/XLS.pm line 29. Spreadsheet::ParseExcel::Stream::XLS::__ANON__ \ ('Spreadsheet::ParseExcel::Workbook=HASH(0x6cd4a08)', 0, 2, 1, \ 'Spreadsheet::ParseExcel::Cell=HASH(0x1387ce78)') called at \ /usr/share/perl5/Spreadsheet/ParseExcel.pm line 2152 Spreadsheet::ParseExcel::_NewCell( \ 'Spreadsheet::ParseExcel::Workbook=HASH(0x6cd4a08)', 2, 1, \ 'Kind', 'PackedIdx', 'Val', 'Dean', 'FormatNo', 25, ...) \ called at /usr/share/perl5/Spreadsheet/ParseExcel.pm line 896 Spreadsheet::ParseExcel::_subLabelSST( \ 'Spreadsheet::ParseExcel::Workbook=HASH(0x6cd4a08)', 253, 10, \ '\x{2}\x{0}\x{1}\x{0}\x{19}\x{0}2\x{0}\x{0}\x{0}') \ called at /usr/share/perl5/Spreadsheet/ParseExcel.pm line 292 Spreadsheet::ParseExcel::parse( \ 'Spreadsheet::ParseExcel=HASH(0x6cd1810)', '2013-09-13.xls') \ called at lib/Spreadsheet/ParseExcel/Stream/XLS.pm line 35 Spreadsheet::ParseExcel::Stream::XLS::__ANON__ \ called at new_importer.pl line 0 </code></pre> <p>That tells me that the parser read the first and second rows, but it dies on the third row for some reason.</p> <p>I've tried rebuilding <code>Spreadsheet::ParseExcel::Stream</code> and it doesn't appear to have any errors (all tests pass). I've also recompiled <code>Coro</code> (same result).</p> <p>I'm mystified. Anyone have any ideas?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USnwellnhof
    1. USOvid
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POSpreadsheet::ParseExcel::Stream losing its parser
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POSpreadsheet::ParseExcel::Stream losing its parser
      1. USBob
      1. VTFavorite
    3. VO
      singulars
      1. POSpreadsheet::ParseExcel::Stream losing its parser
      1. This table or related slice is empty.
      1. VTUpMod
    1. COhave you tried to make $parser show a msg when it goes out of scope? i.e. $parser->{__debug_destroy} = DestroyNote->new().
      singulars
      1. POSpreadsheet::ParseExcel::Stream losing its parser
      1. USShmuel Fomberg
    2. COcan you reduce it to a self-contained runnable example?
      singulars
      1. POSpreadsheet::ParseExcel::Stream losing its parser
      1. USysth
    3. COThe weaken is necessary because of the circular references in the anon subs and variables. You can see the memory leak if you comment out the weaken and then create S::PE::S objects in a loop. Assigning to $tmp_p makes sure the parser doesn't go away until it's supposed to.
      singulars
      1. POSpreadsheet::ParseExcel::Stream losing its parser
      1. USrunrig
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload