question: private void handleReadLastConfirmedError ( int rc ) { if ( BKException . Code . NoSuchLedgerExistsException == rc ) { if ( bkcNoLedgerExceptionsOnReadLAC . incrementAndGet ( ) > noLedgerExceptionOnReadLACThreshold ) { LOG . info ( "{} No entries published to ledger {} yet for {} millis." , new Object [ ] { fullyQualifiedName , currentLH , conf . getReadAheadNoSuchLedgerExceptionOnReadLACErrorThresholdMillis ( ) } ) ; bkcNoLedgerExceptionsOnReadLAC . set ( 0 ) ; if ( closeCurrentLedgerHandle ( ) ) { next . process ( BKException . Code . OK ) ; } return ; } else { if ( LOG . isTraceEnabled ( ) ) { LOG . info ( "{} No entries published to ledger {} yet. Backoff reading ahead for {} ms." , new Object [ ] { fullyQualifiedName , currentLH , conf . getReadAheadWaitTime ( ) } ) ; } schedule ( ReadAheadWorker . this , conf . getReadAheadWaitTime ( ) ) ; return ; } } else if ( BKException . Code . OK != rc ) { handleException ( ReadAheadPhase . READ_LAST_CONFIRMED , rc ) ; return ; } }
target:  Handle the result of reading last add confirmed.