Marten,
When an mfc is finished and dead objects are found (like yours)
all of the running gems are basically asked if they have a
reference to any of the dead objects (this is a vote) if a gem
does have a reference (the object does not have to be connected to
anything) the gem will vote down the object and it will be kept in
the db until the next mfc cycle ...
This is done because if an object is still referenced by a gem it
is impossible to know whether it will be reconnected to a
persistent object so to be on the safe side, the object is not
declared dead until there are no persistent references _and_ not
gems with an in internal reference to the object ...
If you want to make sure that a particular object is counted as
dead, then it is necessary to shut down all gems and start a fresh
gem (topaz) where you take care not to reference the object before
running the mfc, run a reclaimall and repeat the mfc/reclaimall
sequence until no dead objects are found ..
Keep in mind that it is possible that your find references gem is
the gem that was keeping the object alive ..... so logging out of
that gem _before_ doing an MFC is required ...
If you are running mfcs regularly it is likely that the gems will
eventually forget the object and it will be collected sooner or
later ... as you have discovered it can be a painful process to
actually wait until you see with your own eyes that a particular
object has been garbage collected --- but your life would be much
worse if we allowed objects that are still alive to be garbage
collected ...
Dale
On 1/25/19 10:09 AM, Marten Feldtmann
via Glass wrote:
Thanks,
I did this, but with no success.
Then I shut down the database (and with it several topaz
processes waiting for HTTP requests,, several other Topaz
processes, statmonitor) ... and started just the stone ... and
did garbage collection and they went away ...
Hmm, thats another playground to waste time ... :-(
Bill Erickson
[hidden email] hat am 25. Januar 2019
um 18:44 geschrieben:
Marten,
If you're doing any analysis using #listInstances* and
#findReferences* to locate the likely dead objects, make sure
to logout this session before doing the MFC/reclaim.
Otherwise, this session will retain local references to the
"possible dead" and will vote them down during the reclaim
sequence.
------------------------------------------------------------------------
Bill Erickson
GemTalk Systems Engineering
15220 NW Greenbrier Parkway #240, Beaverton OR 97006
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