AWS-如何在当前步骤中添加EMR步骤

Question

I have an EMR cluster that runs a single step - custom JAR. I need to create a second step from the first step at runtime, how can I do it? I know I can do it using the CLI but how can I accomplish it using java?

Thanks

Answer 1

For this you need to use AWS SDK for Java http://docs.aws.amazon.com/ElasticMapReduce/latest/DeveloperGuide/calling-emr-with-java-sdk.html

Please refer to this API reference - especially the addJobFlowSteps method http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/elasticmapreduce/AmazonElasticMapReduce.html