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WARNING: geqo : setting is ignored because it is defunct

Environment

Product Version
Pivotal HDB  1.3.x, 2.x
Pivotal Greenplum (GPDB)  4.x
OS  RHEL6 

Symptom

Master's pg_log displays following messages -

"WARNING","01000","""geqo"": setting is ignored because it is defunct",,,,,,,0,,"guc.c",9564,

Cause

This is a simple warning message indicating that the specified parameter "geqo" has been deprecated and thus ignored. GUC "geqo" was used in the past to control the old style optimizer called 'Genetic Query Optimizer' but the feature has been removed long time ago. It is very rare to see a user trying to use this feature; however, some client connectivity packages still try to set this param during connection initialization.

Resolution

There is no harm in seeing this warning messages at all. Users can safely ignore this messages.

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