Will Fluent bit truncate the log?

[liguangcheng]

I used Fluent Bit v2.0.8 in production environment, recently I found a strange phenomenon that fluent bit truncate the log.
I have a lot of files that all content are xml format, when I used the Fluent-bit to transfer these contents to Splunk server, some of these files will be truncated, there are some files where only part of a certain line is transferred, that is to say, a certain line is truncated.

I also have some files that content are json format, but I did not observe truncation, that means I only observer that xml format content truncated.

Has anyone encountered this problem?

[liguangcheng]

root cause is clear: fluent uses inode to compare the old and new file in DB, if new file use the same inode with old`s, then the offset of old file will be assigned to the new file, finally the new file content will be read from the offset instead of 0
the reference link is #4895