FileTailingAdaptors track the rotation of the log file by having to compare the most recent read offset, and file size. If the file size is smaller than most recent read offset, adaptor detects this as file rotation. The adaptor read to the end of the first file, and send all remaining data to collector. Next, the adaptor discovers the similar pattern file name and track the creation date of the rotated log files. Base on creation date, and file pointer offset tracking, data are sent to collectors in the ordered sequence.
regards, Eric On Thu, Mar 8, 2012 at 10:18 PM, IvyTang <[email protected]> wrote: > I want to use chuwka to collect the log generated by java log4j. > > The log file has the size limition ,when the size reaches to 200M , the > log4j will rename this file to .1 and renew a log file. > > If chukwa is tailing the current log , and the log size reaches to 200M but > the chukwa just collect < 200M . And the the log is renamed , a new log file > is generated. > > I thought this log will miss , the chukwa will read the new log .But i found > the chukwa adaptor file offset doesn't change to 0 . > > How chukwa handle this situation? > > thx > > -- > Best regards, > > Ivy Tang > > >
