I was finally able to recreate this in the repl (as opposed to seeing it
in my error logs), so here is a trace:
The slot DB-BDB::INDICES-CACHE is unbound in the object
#<BDB-INDEXED-BTREE oid:2>.
[Condition of type UNBOUND-SLOT]
Backtrace:
0: ((SB-PCL::FAST-METHOD SLOT-UNBOUND (T T T)) #<unavailable
argument> #<unavailable argument> #<unavailable argument>
#<BDB-INDEXED-BTREE oid:2> DB-BDB::INDICES-CACHE)
1: (SB-PCL::SLOT-UNBOUND-INTERNAL #<BDB-INDEXED-BTREE oid:2> 2)
2: ((SB-PCL::FAST-METHOD (SETF GET-VALUE) (T T
DB-BDB::BDB-INDEXED-BTREE)) #<unavailable lambda list>)
3: ((LAMBDA (WORD)) "34766")
4: (SB-IMPL::MAP1 #<CLOSURE (LAMBDA #) {1003CA4ED9}> (("" "asa"
"106007" "deny" "inbound" "udp" ...)) :LIST T)
5: (MAPCAR #<CLOSURE (LAMBDA #) {1003CA4ED9}> ("" "asa" "106007"
"deny" "inbound" "udp" ...))[:EXTERNAL]
6: ((SB-PCL::FAST-METHOD INDEX-LOG-ENTRY (LOG-ENTRY)) #<unavailable
argument> #<unavailable argument> #<LOG-ENTRY oid:6373>)
7: ((LAMBDA ()))
8: ((SB-PCL::FAST-METHOD ELEPHANT::EXECUTE-TRANSACTION
(DB-BDB::BDB-STORE-CONTROLLER T)) #<unavailable argument> #<unavailable
argument> #<unavailable argument> #<unavailable argument>)[:EXTERNAL]
9: (ADD-LOG-ENTRY ..)
10: (SB-INT:SIMPLE-EVAL-IN-LEXENV ..)
And here is the code that sometimes causes the issue:
(defmethod index-log-entry ((log-entry log-entry))
(let ((*store-controller* *syslog-controller*))
(let ((btree (get-from-root "log-entry-index" :sc
*syslog-controller*)))
(map-words #'(lambda (word)
(unless (or (member word *superfluous-words* :test
#'string-equal)
(< (length word) 2))
(unless (existsp word btree)
(setf (get-value word btree) (make-pset :sc
*syslog-controller*)))
(insert-item log-entry
(get-value word btree))))
(text log-entry)))))
If I drop and recreate the btree, everything runs smoothly (no errors)
for a few hours and then the above error message starts showing up about
half to three quarters of the time.
Thanks again,
Kevin
Kevin Raison wrote:
> I am seeing an intermittent error with 1.0 alpha when trying to write to
> an indexed btree (using BerkeleyDB 4.7 as provided by Ubuntu's package
> repositories):
>
> The slot DB-BDB::INDICES-CACHE is unbound in the object
> #<BDB-INDEXED-BTREE oid:2>
>
> Within the same thread, sometimes this happens and sometimes I am able
> to read and write to the btree. I am using sbcl 1.0.24 on 32 bit intel
> linux. Is there something obvious that might help alleviate this or
> should I provide more context?
>
> Thanks!
> Kevin
>
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> elephant-devel@common-lisp.net
> http://common-lisp.net/mailman/listinfo/elephant-devel
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