Since moving our db's to to an AOAG in SQL 2017 CU16 Enterprise, the error log repeatedly fills with the following;
Error: 30089, Severity: 17, State: 1.
The fulltext filter daemon host (FDHost) process has stopped abnormally. This can occur if an incorrectly configured or malfunctioning linguistic component, such as a wordbreaker, stemmer or filter has caused an irrecoverable error during full-text indexing or query processing. The process will be restarted automatically.
A new instance of the full-text filter daemon host process has been successfully started.
The FDLAUNCHERRORLOG has the following while the fulltext index is being populated (repeatedly for each guid);
MSSQLFDLauncher service received control message.
MSSQLFDLauncher service successfully launched FDHost.exe Process(process id = 7688). command line = "E:\Program Files\Microsoft SQL Server\MSSQL14.MSSQLSERVER\MSSQL\Binn\fdhost.exe" "MSSQL14.MSSQLSERVERA3d1ffb55f4d5bf4bbff94e0f53e57895f6861i9mk0" "MSSQL14.MSSQLSERVER" "MSSQL14.MSSQLSERVER" "8" "" "16384" "M" "0" "" "" ""
We have tried changing the SQL Full-Text Filter Daemon Launcher service account to the same domain service account as the SQL Server Service account but still the same errors.
The only things I can find about this issue seems to be SQL 2008 and R2 and nothing since? Any ideas would be appreciated.