question: private boolean shouldRenameSpecificColumn ( String schema , String table ) { Hashtable < String , Hashtable < String , RenameRequest > > lookupTableCol = lookupSchemaTableCol . get ( schema ) ; if ( lookupTableCol != null ) { Hashtable < String , RenameRequest > lookupCol = lookupTableCol . get ( table ) ; if ( lookupCol != null ) { if ( lookupCol . containsKey ( "*" ) ) { if ( lookupCol . size ( ) > 1 ) return true ; } else { if ( lookupCol . size ( ) > 0 ) return true ; } } } return false ; }
target:  Check whether specific schema and table has requests to rename columns. Doesn't check asterisk matches.