The WDQS Updater fails if it sees more than 6 (?) errors in a row. Please make that parameter configurable, e.g. "Number of failures before quiting", and it should allow -1 or infinite, so that it keeps trying until success. The delay between retries should be progressive, e.g. 0s, 10s, 30s, 1m, 10min (max, don't raise above this).
Right now it's hardcoded in RdfRepository class:
private int maxRetries = 6; private int delay = 1000;
Probably not very hard to make configurable. Note this is for communication with Blazegraph, for Wikibase it's in WikibaseRepository class.