Merged into b1.2. The problem was that the second attempt to fix this ticket was merged only to b1.3 and master, so b1.2 had only the first incomplete solution.
Jacek July 20, 2015 at 5:38 AM
it looks like it has been wrongly merged for b1.2 since it doesn't include the essential part of your patch.
Piotr Kołaczkowski June 26, 2015 at 4:17 PM
Reopening because the problem still exists on b1.3. Maybe Spark does have a thread leak here?