[HIVE-15779] LLAP: WaitQueue comparators should return 0 when tasks of the same DAG are of same priority

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.2.0
• Component/s: llap
• Hadoop Flags: Reviewed
• Assignee: Rajesh Balamohan
• Reporter: Rajesh Balamohan
• Created: 01/Feb/17 09:48
• Updated: 25/Jul/17 20:05
• Resolved: 03/Feb/17 03:14

Description

Observed cases, where in tasks within same vertex were competing with each and getting killed

[IPC Server handler 3 on 44598 (1484282558103_4855_1_00_003877_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003179_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003877_7 because of lower priority
[IPC Server handler 1 on 44598 (1484282558103_4855_1_00_002959_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003832_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_002959_7 because of lower priority
[IPC Server handler 0 on 44598 (1484282558103_4855_1_00_003723_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003254_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003723_7 because of lower priority
[IPC Server handler 4 on 44598 (1484282558103_4855_1_00_003560_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003076_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003560_7 because of lower priority
[IPC Server handler 2 on 44598 (1484282558103_4855_1_00_003775_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_004011_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003775_7 because of lower priority
[IPC Server handler 3 on 44598 (1484282558103_4855_1_00_003842_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_004045_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003842_7 because of lower priority
[IPC Server handler 1 on 44598 (1484282558103_4855_1_00_003953_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003915_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003953_7 because of lower priority
[IPC Server handler 0 on 44598 (1484282558103_4855_1_00_003819_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003919_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003819_7 because of lower priority
[IPC Server handler 4 on 44598 (1484282558103_4855_1_00_002074_8)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003790_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_002074_8 because of lower priority
[IPC Server handler 2 on 44598 (1484282558103_4855_1_00_003670_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003736_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003670_7 because of lower priority
[IPC Server handler 1 on 44598 (1484282558103_4855_1_00_003153_8)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003877_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003153_8 because of lower priority
[IPC Server handler 0 on 44598 (1484282558103_4855_1_00_003328_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003775_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003328_7 because of lower priority
[IPC Server handler 4 on 44598 (1484282558103_4855_1_00_003817_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003842_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003817_7 because of lower priority
[IPC Server handler 2 on 44598 (1484282558103_4855_1_00_004065_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003723_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_004065_7 because of lower priority
[IPC Server handler 3 on 44598 (1484282558103_4855_1_00_003902_7)] impl.TaskExecutorService: attempt_1484282558103_4855_1_00_003560_7 evicted from wait queue in favor of attempt_1484282558103_4855_1_00_003902_7 because of lower priority