clintropolis commented on PR #15058:
URL: https://github.com/apache/druid/pull/15058#issuecomment-1754139548

   added log messages to log.warn on cluster startup if non-recommended 
configurations are used:
   ```
   2023-10-10T00:35:53,140 WARN [main] 
org.apache.druid.common.config.NullValueHandlingConfig - 
druid.generic.useDefaultValueForNull set to 'true', we recommend using 'false' 
if using SQL to query Druid for the most SQL compliant behavior, see 
https://druid.apache.org/docs/latest/querying/sql-data-types#null-values for 
details
   2023-10-10T00:35:53,140 WARN [main] 
org.apache.druid.common.config.NullValueHandlingConfig - 
druid.generic.useThreeValueLogic set to 'false', we recommend using 'true' if 
using SQL to query Druid for the most SQL compliant behavior, see 
https://druid.apache.org/docs/latest/querying/sql-data-types#boolean-logic for 
details
   2023-10-10T00:35:53,156 WARN [main] 
org.apache.druid.math.expr.ExpressionProcessingConfig - 
druid.expressions.useStrictBooleans set to 'false', we recommend using 'true' 
if using SQL to query Druid for the most SQL compliant behavior, see 
https://druid.apache.org/docs/latest/querying/sql-data-types#boolean-logic for 
details
   ```


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