Not sure I am following this. Did Google release this because PG backups are not 100% reliable or the data corruption can occur due to hardware failure.
http://www.eweek.com/cloud/google-releases-open-source-tool-that-checks-postgres-backup-integrity?utm_medium=email&utm_campaign=EWK_NL_EP_20180713_STR5L2&dni=450493554&rni=24844166
