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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Running the application
Package the example application by running mvn package -DskipTests in the wordcount subdirectory of the apex-samples directory. This will create the .apa application package in the target directory:
/workspace/apex-samples/wordcount/target/wordcount-1.0-SNAPSHOT.apa
Prepare some input data:
apex@7bd66492cedc:~$ wget https://raw.githubusercontent.com/apache/apex-core/master/LICENSE apex@7bd66492cedc:~$ hdfs dfs -mkdir /tmp/wordcount apex@7bd66492cedc:~$ hdfs dfs -put LICENSE /tmp/wordcount/LICENCE
Set up configuration for input and output (src/test/resources/properties-sandbox.xml):
<?xml version="1.0"?> <configuration> <property> <name>apex.application.*.operator.*.attr.MEMORY_MB</name> <value>256</value> </property> ...
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