November 2017
Beginner to intermediate
290 pages
7h 34m
English
book
Learning Apache Apex
by Ananth Gundabattula, Thomas Weise, Munagala V. Ramanath, David Yan, Kenneth Knowles
Content preview from Learning Apache Apex
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Writing the integration test
The test covers the entire DAG and will run the application in embedded mode. In embedded mode, all operators and containers share the JUnit JVM. Containers are threads (instead of separate processes) but the data flow still behaves as if operators lived in separate processes. This means operators execute asynchronously as they would in a distributed cluster and data is transferred over the loopback interface (if that's how the streams are configured).
@Test
public void testApplication() throws Exception {
EmbeddedAppLauncher<?> launcher = Launcher.getLauncher(LaunchMode.EMBEDDED);
Attribute.AttributeMap launchAttributes = new Attribute.AttributeMap.DefaultAttributeMap(); launchAttributes.put(EmbeddedAppLauncher.RUN_ASYNC, ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.