Issue #2305: merger missing in log

we have the following entries in our objectdb log (system continues to work normally, database was repaired before switching to version 2.7.5):

[2018-05-14 15:00:48 #1 store] 
Database 'F:\Hummingbird\Objectdb\db\coresystemdb.odb' has been recovered (tr. 68624050-68626451)

[2018-05-14 15:00:52 #2 store] 
Database 'F:\Hummingbird\Objectdb\db\coresystemdb.odb' is opened by 476@wzbhb101

[2018-05-14 15:00:52 #3 store] 
Configuration path: F:\Hummingbird\Objectdb\db\objectdb.conf

[2018-05-14 15:00:52 #4 server] 
Server on port 3333 has started by 476@wzbhb101

[2018-05-16 08:50:02 #5 store] 
SectionClassifier: SectionClassifier{800->merger[14841963]-missing:3831}

[2018-05-16 08:50:03 #6 store] 
SectionClassifier: SectionClassifier{800->merger[14841963]-missing:3831}

[2018-05-16 08:50:03 #7 store] 
SectionClassifier: SectionClassifier{800->merger[14841963]-missing:3831}

[2018-05-16 08:50:03 #8 store] 
SectionClassifier: SectionClassifier{800->merger[14841963]-missing:3831}

This log entry indicates an unexpected condition during retrieval of a large object, but the exact cause is unclear.

If possible please check the database using the Doctor and report any errors.