DROP TABLE not working

[lordpretzel]

The DROP TABLE command is not working currently.

Reproduce bug

Start up the demo 3-node-deployment and run

CREATE TABLE emp (ename VARCHAR(40), salary INTEGER, PRIMARY KEY(ename)) NONE ALL,HASH,{ename} ALL,HASH,{salary}
COMMIT
INSERT INTO emp VALUES ('Peter', 30000)
COMMIT
DROP TABLE emp

Log output on nodes

coordinator.txt
worker_1.txt
worker_2.txt

[jasonar81]

The problem is at line 475 in DeleteOperator. There's several things that could be null here. Suggest adding try/catch and then logging the exception. Best guess is that row is null which means that the child operator is returning a null row (which shouldn't happen). Logging here can catch what the child operator is, and we could then catch any case where the child attempts to return a null row.