Hi @pavanbmishra,
you have to insert in each input stanza the following option ignoreOlderThan:
ignoreOlderThan = <non-negative integer>[s|m|h|d]
* The monitor input compares the modification time on files it encounters
with the current time. If the time elapsed since the modification time
is greater than the value in this setting, Splunk software puts the file
on the ignore list.
* Files on the ignore list are not checked again until the Splunk
platform restarts, or the file monitoring subsystem is reconfigured. This
is true even if the file becomes newer again at a later time.
* Reconfigurations occur when changes are made to monitor or batch
inputs through Splunk Web or the command line.
* Use 'ignoreOlderThan' to increase file monitoring performance when
monitoring a directory hierarchy that contains many older, unchanging
files, and when removing or adding a file to the deny list from the
monitoring location is not a reasonable option.
* Do NOT select a time that files you want to read could reach in
age, even temporarily. Take potential downtime into consideration!
* Suggested value: 14d, which means 2 weeks
* For example, a time window in significant numbers of days or small
numbers of weeks are probably reasonable choices.
* If you need a time window in small numbers of days or hours,
there are other approaches to consider for performant monitoring
beyond the scope of this setting.
* NOTE: Most modern Windows file access APIs do not update file
modification time while the file is open and being actively written to.
Windows delays updating modification time until the file is closed.
Therefore you might have to choose a larger time window on Windows
hosts where files may be open for long time periods.
* Value must be: <number><unit>. For example, "7d" indicates one week.
* Valid units are "d" (days), "h" (hours), "m" (minutes), and "s"
(seconds).
* No default, meaning there is no threshold and no files are
ignored for modification time reasons
as you can read at https://docs.splunk.com/Documentation/Splunk/8.2.6/Admin/Inputsconf
Ciao.
Giuseppe
