find reports "No such file or directory"

[Armin Noll]

The below email is classified: Internal

Hello,

we use findutils version 4.4.2 on Red Hat Enterprise Linux 6.9.

Executing the following call to find

/usr/bin/find /data/sysprog/095/reports -maxdepth 1 -type f -regextype 
posix-egrep -regex 
"/data/sysprog/095/reports/95RPTAB001EUREX20190717[0-9]{8}_XETCASH.*[.]DAT"

results in following error message:

/usr/bin/find: 
`/data/sysprog/095/reports/01RPTTT127EUREX2019071720190717.XML.inc': No such 
file or directory

The mentioned file
/data/sysprog/095/reports/01RPTTT127EUREX2019071720190717.XML.inc
has been created in parallel by another process and has then be renamed 
afterwards to
/data/sysprog/095/reports/01RPTTT127EUREX2019071720190717.XML

According to log output we have, the find takes ca. 9 seconds before it reports 
the shown error message and terminates.

This has been observed just once.
We tried to reproduce this but were not successful.

How can this be explained?
Is this maybe a bug?

Regards
Armin Noll
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