Examples of com.sleepycat.je.Durability

com.sleepycat.je.Durability
Durability defines the overall durability characteristics associated with a transaction. When operating on a local environment the durability of a transaction is completely determined by the local {@link SyncPolicy} that isin effect. When using replication, the overall durability is a function of the local {@link SyncPolicy} plus the {@link ReplicaAckPolicy} used by themaster and the {@link SyncPolicy} in effect at each Replica.

                       int commitMasterNodeId)
        throws DatabaseException {


        LoggerUtils.fine(logger, envImpl, "commit called for " + getId());
        setRepContext(clientRepContext);
        Durability durability = null;
        if (syncPolicy == SyncPolicy.SYNC) {
            durability = Durability.COMMIT_SYNC;
        } else if (syncPolicy == SyncPolicy.NO_SYNC) {
            durability = Durability.COMMIT_NO_SYNC;
        } else if (syncPolicy == SyncPolicy.WRITE_NO_SYNC) {

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     *
     * @see DbResetRepGroup
     */
     public void reset() {


        Durability durability =
            new Durability(Durability.SyncPolicy.SYNC,
                           Durability.SyncPolicy.SYNC,
                           Durability.ReplicaAckPolicy.NONE);


        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setAllowCreate(true);

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               DatabaseException,
               InterruptedException,
               ChecksumException {


        /* Create a single replicator */
        Durability durability = new Durability(SyncPolicy.NO_SYNC,
                                               SyncPolicy.NO_SYNC,
                                               ReplicaAckPolicy.NONE);


        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setAllowCreate(false);

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        /* 
         * Set the ReplicaAckPolicy to ALL, so that all the replicas can get 
         * into a same sync point.
         */ 
        Durability durability =
            new Durability(Durability.SyncPolicy.WRITE_NO_SYNC,
                           Durability.SyncPolicy.WRITE_NO_SYNC,
                           Durability.ReplicaAckPolicy.ALL);


        envConfig.setDurability(durability);
        repConfig.setHelperHosts(helperHost);

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            DatabaseImpl newDbImpl = null;
            Txn txn = null;
            try {
                TransactionConfig txnConfig = new TransactionConfig();
                txnConfig.setDurability(new Durability(SyncPolicy.SYNC,
                                                       SyncPolicy.SYNC,
                                                       ReplicaAckPolicy.NONE));
                txnConfig.setConsistencyPolicy(NO_CONSISTENCY);
                txn = new MasterTxn(this,
                                    txnConfig,

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        autoCommitTxnConfig = new TransactionConfig();
        autoCommitNoWaitTxnConfig = new TransactionConfig();
        autoCommitNoWaitTxnConfig.setNoWait(true);
        /* <!-- begin JE only --> */
        if (!storeConfig.getReplicated()) {
            final Durability envDurability = env.getConfig().getDurability();
            configForNonRepDb(autoCommitTxnConfig, envDurability);
            configForNonRepDb(autoCommitNoWaitTxnConfig, envDurability);
        }
        /* <!-- end JE only --> */

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     * - ReplicaAckPolicy.NONE to avoid consistency checks on the Master
     * - Consistency.NONE to avoid consistency checks on the Replica
     */
    private static void configForNonRepDb(TransactionConfig config,
                                          Durability envDurability) {
        config.setDurability(new Durability
            (envDurability.getLocalSync(), envDurability.getReplicaSync(), 
             Durability.ReplicaAckPolicy.NONE));
        config.setConsistencyPolicy
            (NoConsistencyRequiredPolicy.NO_CONSISTENCY);
    }

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     * Modify the log files in the environment directory to add a modicum of
     * replication required metadata.
     */
     public void convert() {


        Durability durability =
            new Durability(Durability.SyncPolicy.WRITE_NO_SYNC,
                           Durability.SyncPolicy.WRITE_NO_SYNC,
                           Durability.ReplicaAckPolicy.SIMPLE_MAJORITY);


        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setAllowCreate(true);

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     * Modify the log files in the environment directory to add a modicum of
     * replication required metadata.
     */
     public void convert() {


        Durability durability =
            new Durability(Durability.SyncPolicy.WRITE_NO_SYNC,
                           Durability.SyncPolicy.WRITE_NO_SYNC,
                           Durability.ReplicaAckPolicy.SIMPLE_MAJORITY);


        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setAllowCreate(true);

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    public void testSetMessageStoreDurability() throws Exception
    {
        ReplicatedEnvironmentFacade master = createMaster();
        assertEquals("Unexpected message store durability",
                new Durability(Durability.SyncPolicy.NO_SYNC, Durability.SyncPolicy.NO_SYNC, Durability.ReplicaAckPolicy.SIMPLE_MAJORITY),
                master.getRealMessageStoreDurability());
        assertEquals("Unexpected durability", TEST_DURABILITY, master.getMessageStoreDurability());
        assertTrue("Unexpected coalescing sync", master.isCoalescingSync());


        master.setMessageStoreDurability(Durability.SyncPolicy.WRITE_NO_SYNC, Durability.SyncPolicy.SYNC, Durability.ReplicaAckPolicy.ALL);
        assertEquals("Unexpected message store durability",
                new Durability(Durability.SyncPolicy.WRITE_NO_SYNC, Durability.SyncPolicy.SYNC, Durability.ReplicaAckPolicy.ALL),
                master.getRealMessageStoreDurability());
        assertFalse("Coalescing sync committer is still running", master.isCoalescingSync());
    }

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