Hi, This is with RelStorage 1.5.0-b1, with blob-dir enabled, shared-blob-dir false and a low blob-cache-size, say 100000 bytes. Using Plone 3.3.5, plone.app.blob 1.3, plone.app.imaging 1.0.1, but the same is probably true for non-Plone setups.
Create two images that are stored as blobs. Each should fit within the blob-cache-size, but the two of them together should be larger. Create a page that shows both images. Because the cache gets cleared halfway, one of the images does not get loaded, at least not always; in my testing only once every two requests does this image fail to load. The page shows up, but you get a traceback in the logs: 2011-02-28 15:50:35 ERROR ZODB.Connection Couldn't load state for 0x6c6a Traceback (most recent call last): File "/Users/mauritsvanrees/shared-eggs/ZODB3-3.8.6_polling-py2.4-macosx-10.6-i386.egg/ZODB/Connection.py", line 851, in setstate self._setstate(obj) File "/Users/mauritsvanrees/shared-eggs/ZODB3-3.8.6_polling-py2.4-macosx-10.6-i386.egg/ZODB/Connection.py", line 916, in _setstate obj._p_blob_committed = self._storage.loadBlob(obj._p_oid, serial) File "/Users/mauritsvanrees/shared-eggs/RelStorage-1.5.0b1-py2.4.egg/relstorage/storage.py", line 1245, in loadBlob return self.blobhelper.loadBlob(cursor, oid, serial) File "/Users/mauritsvanrees/shared-eggs/RelStorage-1.5.0b1-py2.4.egg/relstorage/blobhelper.py", line 178, in loadBlob raise POSException.POSKeyError("No blob file", oid, serial) POSKeyError: 'No blob file' I wonder if there is some code that mistakenly throws away the wrong blob; it should throw away the oldest one I'd think, and not the one that it just loaded. The workaround is probably just to not set the blob-cache-size this low. But I tried this low setting to work around a different problem, which I will report in a different post. -- Maurits van Rees Web App Programmer at Zest Software: http://zestsoftware.nl Personal website: http://maurits.vanrees.org/ _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev