Github user adeneche commented on a diff in the pull request:
https://github.com/apache/drill/pull/503#discussion_r63430234
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/work/foreman/Foreman.java ---
@@ -1221,6 +1223,12 @@ public void interrupted(final InterruptedException
e) {
* to the user
*/
public void moveToState(final QueryState newState, final Exception ex)
{
+ // if the current thread is the foreman thread, throw an exception
+ // otherwise the foreman will be blocked forever on
acceptExternalEvents
+ if (myThreadRef == Thread.currentThread()) {
--- End diff --
This won't work when submitting remote fragments as the moveToState method
can be called either by the foreman thread or by an rpc thread.
Anyway, I'm working on a better fix that would remove the latch completely.
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