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in_tail: Check detaching inode when follow_inodes #4191

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merged 2 commits into from
Jun 30, 2023
Merged

in_tail: Check detaching inode when follow_inodes #4191

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e9b36c1
Check inode expectation to detach correct watcher when follow_inodes
garyzjq May 31, 2023
bcd9a1a
only add warning log only when detect detaching a wrong watcher
garyzjq Jun 28, 2023
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4 changes: 4 additions & 0 deletions lib/fluent/plugin/in_tail.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -523,6 +523,10 @@ def update_watcher(target_info, pe)
# so adding close_io argument to avoid this problem.
# At shutdown, IOHandler's io will be released automatically after detached the event loop
def detach_watcher(tw, ino, close_io = true)
if @follow_inodes && tw.ino != ino
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log.warn("detach_watcher could be detaching an unexpected tail_watcher with a different ino.",
path: tw.path, actual_ino_in_tw: tw.ino, expect_ino_to_close: ino)
end
tw.watchers.each do |watcher|
event_loop_detach(watcher)
end
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