Bugs item #2846126, was opened at 2009-08-28 11:07
Message generated for change (Comment added) made by stmane
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Category: PF/runtime
Group: Pathfinder CVS Head
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Henning Rode (hrode)
Assigned to: Nobody/Anonymous (nobody)
Summary: CMDmulti_merged_union: operation failed
Initial Comment:
running the following query:
let $doc1 :=
doc("/net/asbjorn/export/scratch0/henning/collections/trecvid09/mastershots/processed3/441.mp7.xml")
let $doc2 :=
doc("/net/asbjorn/export/scratch0/henning/collections/trecvid09/concepts_mixed/concepts_sorted.xml")
let $rsc := exactly-one($doc1//*:resource)
let $cc := zero-or-one($doc2//vid...@uri = $rsc/@uri])//c
return
<resource>
{for $seg in $rsc/segment
let $cc_shot := $...@shotid = $seg/@uri]
return
<segment>
{for $c in $cc_shot return
<descr>
<concept>{string($c/@name)}</concept>
<score>{string($c/@prob)}</score>
</descr>
}
</segment>
}
</resource>
i get the error message:
ERROR = !ERROR: merged_union: BAT/column 6 of table 5 must have a dense head.
!ERROR: CMDmulti_merged_union: operation failed.
unfortunately, the error only occurs when using the files specified in the
beginning of the query. when people outside CWI try to fix this bug, i can
provide the files on request.
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>Comment By: Stefan Manegold (stmane)
Date: 2009-09-04 14:45
Message:
Well, then we'll need to find which function fails to set the denseness
property on a BAT it creates, while merged_union as a ("transitive")
consumer of that BAT expects the denseness ...
----------------------------------------------------------------------
Comment By: Henning Rode (hrode)
Date: 2009-08-28 13:53
Message:
OK, good guess. It is working correctly when starting the Mserver with
-d10.
----------------------------------------------------------------------
Comment By: Stefan Manegold (stmane)
Date: 2009-08-28 13:42
Message:
Henning,
could you please check and report whether the problem also occurs with
property checking enabled, i.e., when starting Mserver with -d10 ?
If this prevent the error, the problem is most probably a not correctly
set denseness property "somewhere" in some code that creats a BAT ...
----------------------------------------------------------------------
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