Received ban for the parent

Elastic Stack Elasticsearch
1

Hi guys,

Periodically in debug logs we can see:

[2019-10-20T18:07:48,342][DEBUG][o.e.a.a.c.n.t.c.TransportCancelTasksAction] [node-00] Received ban for the parent [s8jcicF9TDy_iIzFgH07zw:10741071] on the node [A9AdXLb5QA-ZMcicCn26OQ], reason: [by user request]
[2019-10-20T18:07:59,983][DEBUG][o.e.a.a.c.n.t.c.TransportCancelTasksAction] [node-00] Received ban for the parent [s8jcicF9TDy_iIzFgH07zw:10741223] on the node [A9AdXLb5QA-ZMcicCn26OQ], reason: [by user request]
[2019-10-20T18:08:06,033][DEBUG][o.e.a.a.c.n.t.c.TransportCancelTasksAction] [node-00] Removing ban for the parent [s8jcicF9TDy_iIzFgH07zw:10741071] on the node [A9AdXLb5QA-ZMcicCn26OQ]
[2019-10-20T18:08:06,126][DEBUG][o.e.a.a.c.n.t.c.TransportCancelTasksAction] [node-00] Removing ban for the parent [s8jcicF9TDy_iIzFgH07zw:10741223] on the node [A9AdXLb5QA-ZMcicCn26OQ]

In this time network traffic temporary is decreased

image
image.png812×277 34.2 KB

What does it mean?

Thanks

P.S. In logs UTC, on chart UTC+3

2

Hi @Denis_Lamanov

Those logs mean that the node received cancellations for the given tasks.
Since the task had child tasks, a ban for the task was set on the node, which is basically just a flag that prevents any of the tasks children from executing. (see code in the TaskManager class for details if you're interested)

1 Like
3

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.