List of changeInstances() Examples

Examples of changeInstances()

org.apache.twill.api.TwillController.changeInstances()
Changes the number of running instances of a given runnable. @param runnable The name of the runnable. @param newCount Number of instances for the given runnable. @return A {@link ListenableFuture} that will be completed when the number running instances has beensuccessfully changed. The future will carry the new count as the result. If there is any error while changing instances, it'll be reflected in the future.

Examples of org.apache.twill.api.TwillController.changeInstances()

        socket.close();
      }
    }


    // Increase number of instances
    controller.changeInstances("EchoServer", 3);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 3, 60));


    echoServices = controller.discoverService("echo2");


    // Decrease number of instances

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Examples of org.apache.twill.api.TwillController.changeInstances()

    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 3, 60));


    echoServices = controller.discoverService("echo2");


    // Decrease number of instances
    controller.changeInstances("EchoServer", 1);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 1, 60));


    // Increase number of instances again
    controller.changeInstances("EchoServer", 2);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 2, 60));

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Examples of org.apache.twill.api.TwillController.changeInstances()

    // Decrease number of instances
    controller.changeInstances("EchoServer", 1);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 1, 60));


    // Increase number of instances again
    controller.changeInstances("EchoServer", 2);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 2, 60));


    // Make sure still only one app is running
    Iterable<TwillRunner.LiveInfo> apps = runner.lookupLive();
    Assert.assertTrue(YarnTestUtils.waitForSize(apps, 1, 60));

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Examples of org.apache.twill.api.TwillController.changeInstances()

    for (TwillRunResources resources : echo2Resources) {
      Assert.assertEquals(256, resources.getMemoryMB());
    }


    // Decrease number of instances of echo1 from 2 to 1
    controller.changeInstances("echo1", 1);
    echoServices = controller.discoverService("echo1");
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 1, 60));
    report = controller.getResourceReport();


    // make sure resources for echo1 and echo2 are there

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Examples of org.apache.twill.api.TwillController.changeInstances()

    // Decrease number of instances
    controller.changeInstances("EchoServer", 1);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 1, 60));


    // Increase number of instances again
    controller.changeInstances("EchoServer", 2);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 2, 60));


    // Make sure still only one app is running
    Iterable<TwillRunner.LiveInfo> apps = runner.lookupLive();
    Assert.assertTrue(YarnTestUtils.waitForSize(apps, 1, 60));

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Examples of org.apache.twill.api.TwillController.changeInstances()

        socket.close();
      }
    }


    // Increase number of instances
    controller.changeInstances("EchoServer", 3);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 3, 60));


    echoServices = controller.discoverService("echo2");


    // Decrease number of instances

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Examples of org.apache.twill.api.TwillController.changeInstances()

    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 3, 60));


    echoServices = controller.discoverService("echo2");


    // Decrease number of instances
    controller.changeInstances("EchoServer", 1);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 1, 60));


    // Increase number of instances again
    controller.changeInstances("EchoServer", 2);
    Assert.assertTrue(YarnTestUtils.waitForSize(echoServices, 2, 60));

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