Bugs item #2586088, was opened at 2009-02-10 19:47
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Category: PF/runtime
Group: MonetDB4 "stable"
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Wouter Alink (vzzzbx)
Assigned to: Nobody/Anonymous (nobody)
Summary: XQ: large text nodes
Initial Comment:
(monetdb nov2008 sp2 on Linux)
The following occurred:
wal...@ldc:~/tmp> xmlwf tmp.xml # content is well-formed
wal...@ldc:~/tmp> cat tmp.xml | mclient -lxq -I oops5.xml
MAPI = mone...@localhost:50000
ACTION= mapi_stream_into
ERROR = !ERROR: Detected an entity reference loop
!ERROR: shredder_parse: XML input not well-formed.
!ERROR: CMDshred_stream: operation failed.
wal...@ldc:~/tmp>
What happened is that there is a text-node in tmp.xml which contains more than
8M characters.
In shred_characters() in shredder.mx the maximum text content buffer size is
set at 8M (1<<23). It ignores everything after the 8Mth character. If the 8Mth
character is in the middle of an entity (like """), then the error above
is returned.
I was able to reproduce a document with the features described above using the
following python script:
wal...@ldc:~/tmp> cat createLargeTextField.py
i=0
print "<aap>"
while i < 10000000:
print '"'
i+=1
print "</aap>"
wal...@ldc:~/tmp> python createLargeTextField.py > tmp.xml
p.s. another issue, not really a bug, is that for each (small) portion after
the 8Mth character of a text-node a warning is issued. I would expect only 1
warning to be issued for each text-node that is too large. different bug-report?
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