buffer: Avoid to process discarded chunks in write_step_by_step (for v1.16) #4363
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It fixes following error when many `chunk bytes limit exceeds` errors are occurred: ``` 2020-07-28 14:59:26 +0000 [warn]: #0 emit transaction failed: error_class=IOError error="closed stream" location="/fluentd/vendor/bundle/ruby/2.6.0/gems/fluentd-1.11.1/lib/fluent/plugin/buffer/file_chunk.rb:82:in `pos'" tag="cafiscode-eks-cluster.default" 2020-07-28 14:59:26 +0000 [warn]: #0 /fluentd/vendor/bundle/ruby/2.6.0/gems/fluentd-1.11.1/lib/fluent/plugin/buffer/file_chunk.rb:82:in `pos' 2020-07-28 14:59:26 +0000 [warn]: #0 /fluentd/vendor/bundle/ruby/2.6.0/gems/fluentd-1.11.1/lib/fluent/plugin/buffer/file_chunk.rb:82:in `rollback' 2020-07-28 14:59:26 +0000 [warn]: #0 /fluentd/vendor/bundle/ruby/2.6.0/gems/fluentd-1.11.1/lib/fluent/plugin/buffer.rb:339:in `rescue in block in write' 2020-07-28 14:59:26 +0000 [warn]: #0 /fluentd/vendor/bundle/ruby/2.6.0/gems/fluentd-1.11.1/lib/fluent/plugin/buffer.rb:332:in `block in write' 2020-07-28 14:59:26 +0000 [warn]: #0 /fluentd/vendor/bundle/ruby/2.6.0/gems/fluentd-1.11.1/lib/fluent/plugin/buffer.rb:331:in `each' ... ``` Fix #3089 Signed-off-by: Takuro Ashie <ashie@clear-code.com>
#3089 Signed-off-by: Takuro Ashie <ashie@clear-code.com>
Signed-off-by: Takuro Ashie <ashie@clear-code.com>
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Which issue(s) this PR fixes:
Fix #3089
What this PR does / why we need it:
Backport #4342 to v1.16 branch
Docs Changes:
N/A
Release Note:
Same with the title