Examples of com.sleepycat.je.log.LogEntryType

com.sleepycat.je.log.LogEntryType
LogEntryType is an enumeration of all log entry types.
Log entries are versioned. When changing the persistent form of a log entry in any way that is incompatible with prior releases, make sure the LogEntry instance is capable of reading in older versions from the log and be sure to increment LOG_VERSION. The LogEntry.readEntry and Loggable.readFromLog methods should check the actual version of the entry. If it is less than LOG_VERSION, the old version should be converted to the current version.
Prior to LOG_VERSION 6, each log entry type had a separate version number that was incremented only when that log version changed. From LOG_VERSION 6 onward, all types use the same version, the LOG_VERSION constant. For versions prior to 6, the readEntry and readFromLog methods will be checking the old per-type version. There is no overlap between the old per-type versions and the LOG_VERSION values, because the per-type values are all below 6. [#15365]

The LogEntry instance must be sure that older versions are converted in memory into a correct instance of the newest version, so when that LogEntry object is written again as the result of migration, eviction, the resulting new log entry conforms to the requirements of the new version. If context objects are required for data conversion, the conversion can be done in the Node.postFetchInit method.

        final void maybeSpray(Message entry, OutputWireRecord record)
            throws IOException {


            if (--sprayAfterNMessagesCount == 0) {
                /* Ensure only txnal LNs get sprayed. */
                LogEntryType entryType =
                    LogEntryType.findType(record.getEntryType());
                if (!entryType.isUserLNType() ||
                    !entryType.isTransactional()) {
                    sprayAfterNMessagesCount++;
                    return;
                }
                LoggerUtils.info(logger, threadRepImpl,
                                 "Initiating message spray: " + entry);

View Full Code Here


    protected LogEntry instantiateEntry(EnvironmentImpl envImpl,
                                        ByteBuffer buffer)
        throws DatabaseException {


        LogEntryType type = LogEntryType.findType(header.getType());
        if (type == null) {
            throw EnvironmentFailureException.unexpectedState
                ("Unknown header type:" + header.getType());
        }
        LogEntry entry = type.getNewLogEntry();
        buffer.mark();
        entry.readEntry(envImpl, header, buffer);
        buffer.reset();
        return entry;
    }

View Full Code Here

                (new DatabaseEntry()) :
                null;
            lnEntry.getUserKeyData(key, data);


            /* Make sure the entry type is valid. */
            LogEntryType entryType =
                LogEntryType.findType(reader.getLogEntryType());
            assert entryType.isUserLNType() && entryType.isTransactional();


            /* Figure out the correct change type. */
            ChangeType type = ChangeType.DELETE;
            if (entryType == LogEntryType.LOG_INS_LN_TRANSACTIONAL) {
                type = ChangeType.INSERT;

View Full Code Here

         * the first CkptStart with no following CkptEnd.
         */
        while (reader.readNextEntry()) {
            counter.incNumRead();
            counter.incNumProcessed();
            LogEntryType type = reader.getEntryType();
            if (LogEntryType.LOG_CKPT_END.equals(type)) {
                info.checkpointEndLsn = reader.getLastLsn();
                info.partialCheckpointStartLsn = DbLsn.NULL_LSN;
            } else if (LogEntryType.LOG_CKPT_START.equals(type)) {
                if (info.partialCheckpointStartLsn == DbLsn.NULL_LSN) {

View Full Code Here

            /* Returning a NULL_LSN will not allow locking. */
            throw EnvironmentFailureException.unexpectedState
                ("Cannot log LNs in read-only env.");
        }


        LogEntryType entryType;
        long logAbortLsn;
        boolean logAbortKnownDeleted;
        Txn logTxn;
        LogContext context = new LogContext();

View Full Code Here

             * dup key is the one that navigates us in the main tree. The "key"
             * is the one that navigates us in the duplicate tree. Also, we
             * must check if this is a transactional entry that must be rolled
             * back or one done on the behalf of a null txn.
             */
            LogEntryType entryType;
            long logAbortLsn;
            boolean logAbortKnownDeleted;
            Txn logTxn;
            if (locker.isTransactional()) {
                entryType = LogEntryType.LOG_DEL_DUPLN_TRANSACTIONAL;

View Full Code Here

         long oldLsn,
         Locker locker,
         boolean isProvisional)
        throws DatabaseException {


        LogEntryType entryType;
        long logAbortLsn;
  boolean logAbortKnownDeleted;
        Txn logTxn;
        if (locker != null && locker.isTransactional()) {
            entryType = getTransactionalLogType();

View Full Code Here

         * of the log or an invalid entry.
         * Remember the last seen CkptEnd, and the first CkptStart with no
         * following CkptEnd.
         */
        while (reader.readNextEntry()) {
            LogEntryType type = reader.getEntryType();
            if (LogEntryType.LOG_CKPT_END.equals(type)) {
                info.checkpointEndLsn = reader.getLastLsn();
                info.partialCheckpointStartLsn = DbLsn.NULL_LSN;
            } else if (LogEntryType.LOG_CKPT_START.equals(type)) {
                if (info.partialCheckpointStartLsn == DbLsn.NULL_LSN) {

View Full Code Here

            new LNFileReader(env, readBufferSize, lastUsedLsn, 
                             false, endOfFileLsn, firstActiveLsn, null);


        Iterator iter = lnTypes.iterator();
        while (iter.hasNext()) {
            LogEntryType lnType = (LogEntryType) iter.next();
            reader.addTargetType(lnType);
        }


        Map countedFileSummaries = new HashMap(); // TxnNodeId -> file number
        Set countedAbortLsnNodes = new HashSet(); // set of TxnNodeId

View Full Code Here

            new LNFileReader(env, readBufferSize, rollForwardLsn,
                             true, DbLsn.NULL_LSN, endOfFileLsn, null);


        Iterator iter = lnTypes.iterator();
        while (iter.hasNext()) {
            LogEntryType lnType = (LogEntryType) iter.next();
            reader.addTargetType(lnType);
        }


        Set countedAbortLsnNodes = new HashSet(); // set of TxnNodeId

View Full Code Here

0 1 2

TOP

Related Classes of com.sleepycat.je.log.LogEntryType

com.sleepycat.je.log.entry.LNLogEntry

com.sleepycat.je.logversion.MakeLogEntryVersionData

com.sleepycat.je.recovery.RecoveryManager

com.sleepycat.je.rep.impl.node.Feeder$OutputThread

com.sleepycat.je.rep.stream.WireRecord

com.sleepycat.je.sync.impl.LogChangeReader$LogChangeIterator

com.sleepycat.je.tree.LN

com.sleepycat.je.DatabaseException

java.util.HashSet

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.