Hi we are getting duplicates on log events
Events are :
- multiline
- large (to very large)
- also the files can grow to very large
- open for long time
symptoms:
- when oneshotting the file > no duplicates
- duplicates may arrive on different indexers, or same indexer
- duplicates may arrive in short time span or even up to an hour
- we get them both from Solaris and Redhat hosts
we have played with useAck, increasing filedescriptors, use of parallel mode, increasing bandwidth to try and rule out it being the flow towards the HF.
From logs we do see files being read entirely up to 3 times, but this is not the case for all, so there may be several root causes.
I am now thinking in the direction of writebuffers, but am not sure because I do also see smaller events being duplicated.
we are using these settings for props
UF:
EVENT_BREAKER_ENABLE = true
EVENT_BREAKER = ([\r\n]+)(?:\w+\s+\w+\s+\d{1})
HF:
TRUNCATE = 99999 # because of large messages
TIME_PREFIX = ^(?:[^\t]+?\t){4} # Format is 2021-01-18 16:03:27.118885 so 26 characters
MAX_TIMESTAMP_LOOKAHEAD = 26
TIME_FORMAT = %Y-%m-%d %H:%M:%S.%6N
LINE_BREAKER = ([\r\n]+)(?:\w+\s+\w+\s+\d{1}) # newline characters can be part of the message
SHOULD_LINEMERGE = false
any pointers from your experience on how to further troubleshoot, or just extra pair of eyes/brain is more than appreciated.
thanks
