void function ( ) { flush ( true ) ; }
flush data to persistent store . collect sync metrics . concode_field_sep long numSync concode_elem_sep long totalTimeSync concode_field_sep void flushAndSync concode_elem_sep long getNumSync concode_elem_sep void abort concode_elem_sep String generateReport concode_elem_sep void writeRaw concode_elem_sep void create concode_elem_sep void setReadyToFlush concode_elem_sep long getTotalSyncTime concode_elem_sep void write concode_elem_sep void close concode_elem_sep boolean shouldForceSync