Examples with NoopMaster alluxio.master.NoopMaster used on opensource projects

Example 21 with NoopMaster

use of alluxio.master.NoopMaster in project SSM by Intel-bigdata.

the class AlluxioJournalUtil method getJournalReaderFromSn.

/**
 * @param conf smart configuration
 * @param startSn journal entry sequence number
 * @return journal reader
 */
public static JournalReader getJournalReaderFromSn(SmartConf conf, Long startSn) {
    UfsJournal journal = new UfsJournalSystem(getJournalLocation(conf), 0).createJournal(new NoopMaster(sMaster));
    JournalReader reader = new UfsJournalReader(journal, startSn, true);
    return reader;
}

Example 22 with NoopMaster

use of alluxio.master.NoopMaster in project SSM by Intel-bigdata.

the class AlluxioJournalUtil method getCurrentSeqNum.

/**
 * @param conf smart configuration
 * @return the current entry sequence number
 */
public static Long getCurrentSeqNum(SmartConf conf) {
    UfsJournal journal = new UfsJournalSystem(getJournalLocation(conf), 0).createJournal(new NoopMaster(sMaster));
    UfsJournalFile currentLog;
    try {
        currentLog = UfsJournalSnapshot.getCurrentLog(journal);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    long sn = -1L;
    if (currentLog != null) {
        try (JournalReader reader = new UfsJournalReader(journal, currentLog.getStart(), true)) {
            Journal.JournalEntry entry;
            while ((entry = reader.read()) != null) {
                sn = entry.getSequenceNumber();
                if (sn >= Long.MAX_VALUE) {
                    break;
                }
            }
        } catch (Exception e) {
            LOG.error("Failed to read next journal entry.", e);
        }
    }
    return sn;
}