Oozie之JavaAction测试实例

Java Acon

目录

1.官网解释..................................................................................................................................... 1

2.JavaAcon 使用........................................................................................................................... 4

2.1 编写自定义功能的 main 函数.......................................................................................... 4

2.2 编写 workow.xml 文件.................................................................................................... 6

2.3 编写 job.properes 文件.................................................................................................. 7

2.4 部署.................................................................................................................................. 7

action.

Thejavaaction has to be congured with the job-tracker, name-node, main Java class, JVM options and

arguments.

To indicate anokaction transition, the main Java class must complete gracefully themainmethod

invocation.

To indicate anerroraction transition, the main Java class must throw an exception.

The main Java class must not callSystem.exit(int n)as this will make thejavaaction to do

anerrortransition regardless of the used exit code.

Ajavaaction can be congured to perform HDFS les/directories cleanup before starting the Java

application. This capability enables Oozie to retry a Java application in the situation of a transient or non-