Fluentd process never exits when blocking for full buffer queue

[tagomoris]

I confirmed this problem on Fluentd v0.12.29, but I know that v0.14.x has this problem too.

When we enable <buffer> overflow_action block </buffer> or buffer_queue_full_action block and the buffer queue is actually full, input threads will block, and never returns if output plugins doesn't go back to normal.

If users will try to stop Fluentd process under this situation, Fluentd don't stop these threads, and the process never stops.

[tagomoris]

@repeatedly will you fix this problem in v0.12 versions?

[repeatedly]

@tagomoris Okay, I will check it.

[tagomoris]

#1396 fixes this problem for v0.14 or later.

[kenhys]

Released as v0.14.12
https://github.com/fluent/fluentd/blob/master/CHANGELOG.md#release-v01412---20170130 v0.14.12

[cosmo0920]

Fixed in v0.14.12. And v0.12 is now EOL? (No activities until end of 2019 as described in https://www.fluentd.org/blog/drop-schedule-announcement-in-2019)

[kenhys]

v0.12 is not maintained anymore, I'll close it.