张华 created IO-526:
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Summary: The problem of log acquisition
Key: IO-526
URL: https://issues.apache.org/jira/browse/IO-526
Project: Commons IO
Issue Type: Bug
Components: Streams/Writers
Affects Versions: 2.5
Reporter: 张华
Fix For: 2.5
Problem Description:
Recently a problem appeared in the use of commons io 2.5 when Tailer
class is in the process of monitoring and reading log files: there is lost logs
and repeatedly collected logs for the collection of log files continuously
split by time .
Scene reproduction:
We use log4j-1.2.17 in our project to generate the log file and split it
up once every hour. If the current file name is system.log, the file name after
splitting is system1.log.The Tailer class in commons io 2.5 monitors changes to
the file every 500 milliseconds.
1. The current system.log length is 10, position is also 10, after cutting
the new system.log length is 20, then this.length is greater than position and
position is set to 0, the old file collection then repeats (ie, system1. Log).
New log is missing.
2. The current system.log length is 10,position is 10, after cutting new
system.log length is 10, then this.length is equal to position, no log
information is read. New file logs is missing.
I hope commons io team can solve this problem, thank you!
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