Is there a limit on json arrays?

Hi, I import a json-file with a json-object that contains an array with another 50 json-objects. It looks like, that the (multiline) event is not read in till to the end, but my truncate and max_events are big enough. I have SHOULD_LINEMERGE = true, truncate=0 and max_events=10000. Is there perhaps another (hidden) parameter to control event-length or json-objects?

best regards Marco