Example usage for java.util.concurrent Executors newCachedThreadPool

List of usage examples for java.util.concurrent Executors newCachedThreadPool

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Introduction

In this page you can find the example usage for java.util.concurrent Executors newCachedThreadPool.

Prototype

public static ExecutorService newCachedThreadPool(ThreadFactory threadFactory)

Source Link

Document

Creates a thread pool that creates new threads as needed, but will reuse previously constructed threads when they are available, and uses the provided ThreadFactory to create new threads when needed.

Usage

From source file:com.sds.acube.ndisc.mts.xserver.XNDiscServer.java

/**
 *    //from w ww .  j  a  v a2s  .c o m
 * 
 * @throws Exception
 *              ?
 */
private void init() throws Exception {

    /* xsocket  - FINE ???     ?  ? ?  ? */
    if (XSOCKET_DEBUG) {
        xsocket_log.setLevel(Level.ALL);
    } else {
        xsocket_log.setLevel(Level.INFO);
    }
    ConsoleHandler console = new ConsoleHandler();
    if (XSOCKET_DEBUG) {
        console.setLevel(Level.ALL);
    } else {
        console.setLevel(Level.INFO);
    }
    xsocket_log.addHandler(console);
    /* xsocket  - FINE ???     ?  ? ?  ? */

    initLogger();

    initFilter();

    initStorage();

    InetAddress ia = InetAddress.getByName(HOST);
    if (ia == null) {
        ia = InetAddress.getLocalHost();
    }

    /*  ?   ( ) - Receive Buffer Size  ? */
    Map<String, Object> options = new HashMap<String, Object>();

    // - 2014.04.29 - ?   - START - Multiplexing?   .
    // options.put(IConnection.SO_REUSEADDR, true);
    // options.put(IConnection.SO_LINGER, "5"); // ?  ??     (? ? ?  )
    // options.put(IConnection.SO_KEEPALIVE, true);
    // options.put(IConnection.TCP_NODELAY, true);
    // options.put(IConnection.SO_RCVBUF, XNDiscConfig.INIT_BUFFER_SIZE);
    // options.put(IConnection.SO_SNDBUF, XNDiscConfig.INIT_BUFFER_SIZE);
    // - 2014.04.29 - ?   - END - Multiplexing?   .

    /* SERVER? ?  ?  */

    /*  workerpool (?? ?  ? )?    ?. */
    /* ? ? workerpool? ? ?    workerpool ? ?. ? 100. */
    System.setProperty(XNDiscUtils.XSOCKET_WORKER_POOL_MIN_SIZE, SIZE_WORKER_POOL);
    /*  workerpool?    ?. ? 4 */
    System.setProperty(XNDiscUtils.XSOCKET_WORKER_POOL_MIN_SIZE, MIN_SIZE_WORKER_POOL);
    /* ? ? (NIO Selectors)? . ? 2 ?  ?. */
    System.setProperty(XNDiscUtils.XSOKET_DISPATCHER_INIT_COUNT, DISPATCHER_INIT_COUNT);
    /*  ?? ? ??   */
    /*  , ??  ?? ?. ? ??  . */
    System.setProperty(XNDiscUtils.XSOCKET_DISPATCHER_MAX_HANDLE, DISPATCHER_MAX_HANDLES);
    /* ?  ? ?    ?? ?? ? . ? false. */
    System.setProperty(XNDiscUtils.XSOCKET_SERVER_READ_BUFFER_USEDIRECT, READ_BUFFER_USEDIRECT);

    // - 2014.04.25 - ByteBuffer Direct   - START
    System.setProperty(XNDiscUtils.XSOCKET_CLIENT_READ_BUFFER_USEDIRECT, READ_BUFFER_USEDIRECT);
    System.setProperty(XNDiscUtils.XSOCKET_WRITE_BUFFER_USEDIRECT, READ_BUFFER_USEDIRECT);
    // - 2014.04.25 - ByteBuffer Direct   - END

    // - 2014.04.29 -    - START
    System.setProperty(XNDiscUtils.XSOCKET_SUPPRESS_SYNC_FLUSH_WARNING, "true");
    System.setProperty(XNDiscUtils.XSOCKET_SUPPRESS_REUSE_BUFFER_WARNING, "true"); // or FlushMode.SYNC (GET ? )
    System.setProperty(XNDiscUtils.XSOCKET_SUPPRESS_SYNC_FLUSH_COMPLETION_HANDLER_WARNING, "true");
    System.setProperty(XNDiscUtils.XSOCKET_DISPATCHER_BYPASSING_WRITE_ALLOWED, "true");
    // - 2014.04.29 -    - END

    /* (NIO SelectionKey)?  ? true ? ?? detach?. ?? ???  .  false. */
    System.setProperty(XNDiscUtils.XSOCKET_DISPATCHER_DETACH_HANDLE_ON_NO_OPS, DETACH_HANDLE_NO_OPERATION);
    /* ? ??  ? ??   ? ?   (1024 * 16) */
    Integer mapped_bytebuffer_maxsize = 1024
            * XNDiscConfig.getInt(XNDiscConfig.TRANSFER_MAPPED_BYTE_BUFFER_MAXSIZE, 16);
    System.setProperty(XNDiscUtils.XSOCKET_TRANFER_MAPPED_BYTEBUFFER_MAX_SIZE,
            mapped_bytebuffer_maxsize.toString());

    /* ? Sever  - SSL ?   ?    Connection? ?  ?! */
    if (USE_SSL) {
        this.server = new Server(ia, PORT, options,
                new MultiplexedProtocolAdapter(new XNDiscHandler(storage, logger)),
                XNDiscSSLContextFactory.getSSLContext(), true);
        // this.server = new Server(ia, PORT, options, new XNDiscHandler(storage, logger), XNDiscSSLContextFactory.getSSLContext(), true);
    } else {
        this.server = new Server(ia, PORT, options,
                new MultiplexedProtocolAdapter(new XNDiscHandler(storage, logger)), null, false);
        // this.server = new Server(ia, PORT, options, new XNDiscHandler(storage, logger), null, false);
    }

    /*  ThreadPool? ? , Cached ?   ? ??? ?  ? ?  ?. */
    /* SERVER? ?  ? (? Fixed) */
    /*   ?  :  ? ?  ?? Runtime.availableProcessors() ? ? ?? ???   */
    /* newFixedThreadPool ?  ?  ? corePoolSize, maximumPoolSize  .  ?  */
    /* newCachedThreadPool ?  corePoolSize = 0, maximumPoolSize  Integer.MAX_VALUE  .  ? 1 */

    if (WORKER_POOL_TYPE.equals("C")) {
        this.server.setWorkerpool(Executors.newCachedThreadPool(new XNDiscThreadFactory(true)));
    } else {
        if (XNDiscConfig.getBoolean(XNDiscConfig.MULTIPLICATION_THREAD_AVAILABLE_PROCESSORS)) {
            WORKER_THREAD_POOL = Runtime.getRuntime().availableProcessors() * WORKER_THREAD_POOL;
        }
        this.server
                .setWorkerpool(Executors.newFixedThreadPool(WORKER_THREAD_POOL, new XNDiscThreadFactory(true)));
    }
    this.server.setFlushmode(FlushMode.ASYNC);
}

From source file:com.linkedin.pinot.query.selection.SelectionQueriesForMultiValueColumnTest.java

@Test
public void testInterSegmentSelectionPlanMakerAndRun() throws Exception {
    final int numSegments = 20;
    setupSegmentList(numSegments);/*from w  ww  . j  a  v  a  2s . com*/
    final PlanMaker instancePlanMaker = new InstancePlanMakerImplV2();
    final BrokerRequest brokerRequest = getSelectionNoFilterBrokerRequest();
    final ExecutorService executorService = Executors
            .newCachedThreadPool(new NamedThreadFactory("test-plan-maker"));
    final Plan globalPlan = instancePlanMaker.makeInterSegmentPlan(_indexSegmentList, brokerRequest,
            executorService, 150000);
    globalPlan.print();
    globalPlan.execute();
    final DataTable instanceResponse = globalPlan.getInstanceResponse();
    System.out.println("instanceResponse : " + instanceResponse);

    final BrokerReduceService reduceService = new BrokerReduceService();
    final Map<ServerInstance, DataTable> instanceResponseMap = new HashMap<ServerInstance, DataTable>();
    instanceResponseMap.put(new ServerInstance("localhost:0000"), instanceResponse);
    final BrokerResponseNative brokerResponse = reduceService.reduceOnDataTable(brokerRequest,
            instanceResponseMap);

    SelectionResults selectionResults = brokerResponse.getSelectionResults();
    List<String> columns = selectionResults.getColumns();
    Assert.assertEquals(columns.get(0), "column2");
    Assert.assertEquals(columns.get(1), "column1");
    Assert.assertEquals(columns.get(2), "column5");
    Assert.assertEquals(columns.get(3), "column6");
    Assert.assertEquals(columns.get(4), "column7");
    Assert.assertEquals(columns.get(5), "count");

    List<Serializable[]> rows = selectionResults.getRows();
    for (int i = 0; i < rows.size(); ++i) {
        Serializable[] row = rows.get(i);
        Assert.assertEquals(row[0], "2147434110");
    }
}