Github user ilooner commented on the pull request:
https://github.com/apache/drill/commit/a9f2a1c6ad59386828f41731b7415e18a9459cc6#commitcomment-25390975
In exec/java-exec/src/main/java/org/apache/drill/exec/work/WorkManager.java:
In exec/java-exec/src/main/java/org/apache/drill/exec/work/WorkManager.java
on line 188:
Your right the javadoc does say the lock is reacquired before returning in
all cases. Fixed---
