Description Samuel Leisering 2017-07-14 07:42:40 EDT

Sometimes it happens that the same key has more than one entries in an EMap that is stored in a database using CDO. As far as we can tell this is a problem of how cdo stores maps

unfortunately we did not find a way to consistently reproduce this, as this happens very sporadically

The entries are all put into the same way (using EMap.put(...)). Getting the entry  of a key with multiple entries always returns the oldest value, so it is not possible to overwrite entries.

A workaround would be to do something like this before putting the new value, which deletes all entries in turn:

while (emap.containsKey(key)) {
  emap.removeKey(key);
}