Examples of HConnectionPool


        // For each connection in a connection pool, assign an HTablePool max size of 25 references per table
        HConnectionPoolManager.setMaxPoolReferencesPerTablePerConnection(25);


        // Create connection pool with max of 25 connections and prime it with 5 initial connections
        HConnectionPool connectionPool = HConnectionPoolManager.newConnectionPool(5, 25);


        // Create Query Executor Pool named execPool if it doesn't already exist.
        if (!QueryExecutorPoolManager.queryExecutorPoolExists("execPool"))
            QueryExecutorPoolManager.newQueryExecutorPool("execPool", 5, 5, 10, Long.MAX_VALUE, true, 100);


        // Take a connection from the connection pool
        HConnection conn = connectionPool.takeConnection();


        // Assign the connection a query executor pool name to use for queries
        conn.setQueryExecutorPoolName("execPool");


        // Do something with the connection

    }


    @Test
    public void randomConcurrentTest() throws HBqlException, InterruptedException {


        final HConnectionPool connectionPool = HConnectionPoolManager.newConnectionPool(1, 4);


        final int queryPoolCnt = 5;
        for (int p = 1; p <= queryPoolCnt; p++) {
            final String poolName = "execPool" + p;
            System.out.println("Creating query executor pool: " + poolName);
            QueryExecutorPoolManager.newQueryExecutorPool(poolName,
                                                          Utils.getRandomPositiveInt(5),
                                                          Utils.getRandomPositiveInt(2),
                                                          Utils.getRandomPositiveInt(5),
                                                          Long.MAX_VALUE,
                                                          Utils.getRandomBoolean(),
                                                          Utils.getRandomPositiveInt(10));
        }


        final int poolSize = Utils.getRandomPositiveInt(10);
        final ExecutorService threadPool = Executors.newFixedThreadPool(poolSize);


        final int repeats = 10;


        for (int i = 0; i < repeats; i++) {
            final int totalJobs = Utils.getRandomPositiveInt(50);
            final int keyCount = Utils.getRandomPositiveInt(50);
            final CountDownLatch latch = new CountDownLatch(totalJobs);


            for (int tj = 0; tj < totalJobs; tj++) {
                final int jobNum = tj;
                threadPool.submit(
                        new Runnable() {
                            public void run() {


                                HConnection conn = null;
                                try {
                                    conn = connectionPool.takeConnection();


                                    conn.setQueryExecutorPoolName("execPool" + Utils.getRandomPositiveInt(queryPoolCnt));


                                    conn.execute("CREATE TEMP MAPPING tab3 FOR TABLE table20"
                                                 + "("

Examples of HConnectionPool

Examples of org.apache.hadoop.hbase.hbql.client.HConnectionPool

Examples of org.apache.hadoop.hbase.hbql.client.HConnectionPool