Query install failed after Upgrade from 3.2.1 to 3.2.2 in production Symptoms After upgrading from 3.2.1 to 3.2.2, query installation failed. Error Messages Warning: comparison between signed integer expression java.lang.NullPointException Cause System bug. INT size= Source.size(); Resolution The issue was fixed in 3.8.0 Workaround To workaround this issue, please use the following steps: As the INT can’t assign the value to size, so we just need to divide this statement into two parts. INT size; size = Source.size();