Examples of com.sleepycat.je.EnvironmentMutableConfig

com.sleepycat.je.EnvironmentMutableConfig
ify no-sync behavior for a given handle. EnvironmentMutableConfig mutableConfig = myEnvHandle.getMutableConfig(); mutableConfig.setTxnNoSync(true); myEnvHandle.setMutableConfig(mutableConfig);
The per-environment handle properties are listed below. These properties are accessed using the setter and getter methods listed, as shown in the example above.
- {@link #setDurability}, {@link #getDurability}
- {@link #setTxnNoSync}, {@link #getTxnNoSync} deprecated
- {@link #setTxnWriteNoSync}, {@link #getTxnWriteNoSync} deprecated
Environment-Wide Mutable Properties

Environment-wide mutable properties are those that can be changed for an environment as a whole, irrespective of which environment instance (for the same physical environment) is used. For example, to stop the cleaner daemon thread, do this:
```
 // Stop the cleaner daemon thread for the environment. EnvironmentMutableConfig mutableConfig = myEnvHandle.getMutableConfig(); mutableConfig.setConfigParam("je.env.runCleaner", "false"); myEnvHandle.setMutableConfig(mutableConfig); 
```
The environment-wide mutable properties are listed below. These properties are accessed using the {@link #setConfigParam} and {@link #getConfigParam} methods, as shown in the example above, using the propertynames listed below. In some cases setter and getter methods are also available.
- je.maxMemory ( {@link #setCacheSize}, {@link #getCacheSize})
- je.maxMemoryPercent ( {@link #setCachePercent}, {@link #getCachePercent})
- je.env.runINCompressor
- je.env.runEvictor
- je.env.runCheckpointer
- je.env.runCleaner
Getting the Current Environment Properties
To get the current "live" properties of an environment after constructing it or changing its properties, you must call {@link Environment#getConfig} or{@link Environment#getMutableConfig}. The original EnvironmentConfig or EnvironmentMutableConfig object used to set the properties is not kept up to date as properties are changed, and does not reflect property validation or properties that are computed. @see EnvironmentConfig

                    (((Boolean) value).booleanValue());
            } else {
                /* Set the specified attribute if the environment is open. */
                if (targetEnv != null) {


                    EnvironmentMutableConfig config =
                        targetEnv.getMutableConfig();


                    if (name.equals(ATT_CACHE_SIZE)) {
                        config.setCacheSize(((Long) value).longValue());
                        targetEnv.setMutableConfig(config);
                    } else if (name.equals(ATT_CACHE_PERCENT)) {
                        config.setCachePercent(((Integer) value).intValue());
                        targetEnv.setMutableConfig(config);
                    } else {
                        throw new AttributeNotFoundException
                            ("attribute " + name + " is not valid.");
                    }

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            throw new InvalidAttributeValueException
                ("Attribute value for attribute " + name + " can't be null");
        }


        try {
            EnvironmentMutableConfig mutableConfig = env.getMutableConfig();


            if (name.equals(ATT_CACHE_SIZE)) {
                mutableConfig.setCacheSize(((Long) value).longValue());
                env.setMutableConfig(mutableConfig);
            } else if (name.equals(ATT_CACHE_PERCENT)) {
                mutableConfig.setCachePercent(((Integer) value).intValue());
                env.setMutableConfig(mutableConfig);
            } else {
                throw new AttributeNotFoundException
                    ("Attribute " + name + " is not valid.");
            }

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        throws DatabaseException {
            
        /* Push the cache size down by half to force eviction. */
        EnvironmentImpl envImpl = DbInternal.getEnvironmentImpl(env);
        long cacheUsage = envImpl.getMemoryBudget().getCacheMemoryUsage();
        EnvironmentMutableConfig c = new EnvironmentMutableConfig();
        c.setCacheSize(cacheUsage/2);
        env.setMutableConfig(c);


        long start = System.currentTimeMillis();
        env.evictMemory();
        long end = System.currentTimeMillis();

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     */
    private void adjustCacheSizes() {
        long newSharedCacheSize = voldemortConfig.getBdbCacheSize() - this.reservedCacheSize;
        logger.info("Setting the shared cache size to " + newSharedCacheSize);
        for(Environment environment: unreservedStores) {
            EnvironmentMutableConfig mConfig = environment.getMutableConfig();
            mConfig.setCacheSize(newSharedCacheSize);
            environment.setMutableConfig(mConfig);
        }
    }

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        String storeName = storeDef.getName();
        Environment environment = environments.get(storeName);
        // change reservation amount of reserved store
        if(!unreservedStores.contains(environment) && storeDef.hasMemoryFootprint()) {
            EnvironmentMutableConfig mConfig = environment.getMutableConfig();
            long currentCacheSize = mConfig.getCacheSize();
            long newCacheSize = storeDef.getMemoryFootprintMB() * ByteUtils.BYTES_PER_MB;
            if(currentCacheSize != newCacheSize) {
                long newReservedCacheSize = this.reservedCacheSize - currentCacheSize
                                            + newCacheSize;


                // check that we leave a 'minimum' shared cache
                if((voldemortConfig.getBdbCacheSize() - newReservedCacheSize) < voldemortConfig.getBdbMinimumSharedCache()) {
                    throw new StorageInitializationException("Reservation of "
                                                             + storeDef.getMemoryFootprintMB()
                                                             + " MB for store "
                                                             + storeName
                                                             + " violates minimum shared cache size of "
                                                             + voldemortConfig.getBdbMinimumSharedCache());
                }


                this.reservedCacheSize = newReservedCacheSize;
                adjustCacheSizes();
                mConfig.setCacheSize(newCacheSize);
                environment.setMutableConfig(mConfig);
                logger.info("Setting private cache for store " + storeDef.getName() + " to "
                            + newCacheSize);
            }
        } else {

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            synchronized(this) {
                numOutstandingBatchWriteJobs++;
                // turn the checkpointer off for the first job
                if(numOutstandingBatchWriteJobs == 1) {
                    logger.info("Turning checkpointer off for batch writes");
                    EnvironmentMutableConfig mConfig = environment.getMutableConfig();
                    mConfig.setConfigParam(EnvironmentConfig.ENV_RUN_CHECKPOINTER,
                                           Boolean.toString(false));
                    environment.setMutableConfig(mConfig);
                    return true;
                }
            }

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            synchronized(this) {
                numOutstandingBatchWriteJobs--;
                // turn the checkpointer back on if the last job finishes
                if(numOutstandingBatchWriteJobs == 0) {
                    logger.info("Turning checkpointer on");
                    EnvironmentMutableConfig mConfig = environment.getMutableConfig();
                    mConfig.setConfigParam(EnvironmentConfig.ENV_RUN_CHECKPOINTER,
                                           Boolean.toString(true));
                    environment.setMutableConfig(mConfig);
                    return true;
                }
            }

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        EnvironmentConfig envConfig = new EnvironmentConfig();
        //envConfig.setTransactional(true);
        envConfig.setAllowCreate(true);
        dbEnv = new Environment(dbDir, envConfig);


        EnvironmentMutableConfig envMutableConfig = new EnvironmentMutableConfig();
        //envMutableConfig.setDurability(Durability.COMMIT_SYNC);
        //envMutableConfig.setDurability(Durability.COMMIT_NO_SYNC);
        envMutableConfig.setDurability(Durability.COMMIT_WRITE_NO_SYNC);
        dbEnv.setMutableConfig(envMutableConfig);


        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setAllowCreate(true);
        //dbConfig.setDeferredWrite(true);

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                                             ((Boolean) value).booleanValue());
            } else {
                /* Set the specified attribute if the environment is open. */
                if (targetEnv != null) {


                    EnvironmentMutableConfig config =
                        targetEnv.getMutableConfig();


                    if (name.equals(ATT_CACHE_SIZE)) {
                        config.setCacheSize(((Long) value).longValue());
                        targetEnv.setMutableConfig(config);
                    } else if (name.equals(ATT_CACHE_PERCENT)) {
                        config.setCachePercent(((Integer) value).intValue());
                        targetEnv.setMutableConfig(config);
                    } else {
                        throw new AttributeNotFoundException("attribute " +
                                                             name +
                                                             " is not valid.");

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        throws DatabaseException {
      
        /* push the cache size down by half to force eviction. */
        EnvironmentImpl envImpl = DbInternal.envGetEnvironmentImpl(env);
        long cacheUsage = envImpl.getMemoryBudget().getCacheMemoryUsage();
        EnvironmentMutableConfig c = new EnvironmentMutableConfig();
        c.setCacheSize(cacheUsage/2);
        env.setMutableConfig(c);


        long start = System.currentTimeMillis();
        env.evictMemory();
        long end = System.currentTimeMillis();

View Full Code Here

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Examples of com.sleepycat.je.EnvironmentMutableConfig

Environment-Wide Mutable Properties

Getting the Current Environment Properties

Related Classes of com.sleepycat.je.EnvironmentMutableConfig