Merge branch 'AthenaIO_SharedWriterIncidentFix2' from 'master' to '21.2'
Fix needed as shared memory segments may have names "SHM" + client number.
See merge request !24314 (merged)
(cherry picked from commit 6682b9f7)
71c0630b Fix needed as shared memory segments may have names "SHM" + client number.
Edited by Peter Van Gemmeren