Bugs item #1771532, was opened at 2007-08-10 12:35
Message generated for change (Comment added) made by stmane
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Category: PF/compiler
Group: Pathfinder CVS Head
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Maurice van Keulen (mvankeulen)
Assigned to: Nobody/Anonymous (nobody)
Summary: MIL-optimizer fails sometimes for big queries
Initial Comment:
When running big queries, i.e., queries with many lines of XQuery code
(possibly due to import of modules), you sometimes run into MonetDB error
messages like
ERROR = !ERROR: BATfetchjoin(tmp_5102,tmp_5122) does not hit always (|bn|=2 !=
4=|l|) => can't use fetchjoin.
!ERROR: CMDleftfetchjoin: operation failed.
The problem is not in the mps generating faulty code, but in the MIL-optimizer
(mil_opt.c) running out of bounds. Switching off the MIL-optimizer by changing
line 697 of mil_opt.c from "* if (!(o->optimize)) {" into "if (1) {" avoids the
bug.
The attached query runs into the bug. Switching off the MIL-optimizer results
in it running into another bug:
ERROR = !ERROR: interpret: no matching MIL operator to 'append(BAT[oid,oid],
BAT[oid,void])'.
!MAYBE YOU MEAN:
! append(BAT[any::1,BAT], any) : BAT[any::1,BAT]
! append(BAT[void,any::1], any::1, bit) : BAT[void,any::1]
! append(BAT[void,any::1], any::1) : BAT[void,any::1]
! append(BAT[oid,any::1], any::1, bit) : BAT[oid,any::1]
! append(BAT[oid,any::1], any::1) : BAT[oid,any::1]
! append(BAT[void,any::1], BAT[oid,any::1], bit) :
BAT[void,any::1]
! append(BAT[void,any::1], BAT[oid,any::1]) : BAT[void,any::1]
! append(BAT[void,any::1], BAT[void,any::1], bit) :
BAT[void,any::1]
! append(BAT[void,any::1], BAT[void,any::1]) : BAT[void,any::1]
! append(BAT[oid,any::1], BAT[oid,any::1], bit) : BAT[oid,any::1]
! append(BAT[oid,any::1], BAT[oid,any::1]) : BAT[oid,any::1]
Apparently, there is a missing assignment to "pos" somewhere in mps, because if
I add "pos:[EMAIL PROTECTED];" to line 11641 in milprint_summer.c (function
PFudfMIL), the code runs fine.
Sorry to report two bugs in one bug-report.
----------------------------------------------------------------------
>Comment By: Stefan Manegold (stmane)
Date: 2007-08-10 12:44
Message:
Logged In: YES
user_id=572415
Originator: NO
$ pf /tmp/bug12.xq
bad usage of XML namespaces: at (46,53-46,78): unknown namespace in
qualified function name pxmlsup:deep-equal
# halted in
/ufs/manegold/_/scratch0/Monet/Testing/Current/source/pathfinder/compiler/semantics/ns.c
(ns_resolve), line 851
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