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From "mingleizhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-7118) Remove hadoop1.x code in HadoopUtils
Date Sat, 22 Jul 2017 14:11:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-7118?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

mingleizhang updated FLINK-7118:
--------------------------------
    Fix Version/s: 1.3.2

> Remove hadoop1.x code in HadoopUtils
> ------------------------------------
>
>                 Key: FLINK-7118
>                 URL: https://issues.apache.org/jira/browse/FLINK-7118
>             Project: Flink
>          Issue Type: Improvement
>          Components: Java API
>            Reporter: mingleizhang
>            Assignee: mingleizhang
>             Fix For: 1.3.2
>
>
> Since flink no longer support hadoop 1.x version, we should remove it. Below code reside
in {{org.apache.flink.api.java.hadoop.mapred.utils.HadoopUtils}}
> 	
> {code:java}
> public static JobContext instantiateJobContext(Configuration configuration, JobID jobId)
throws Exception {
> 		try {
> 			Class<?> clazz;
> 			// for Hadoop 1.xx
> 			if(JobContext.class.isInterface()) {
> 				clazz = Class.forName("org.apache.hadoop.mapreduce.task.JobContextImpl", true, Thread.currentThread().getContextClassLoader());
> 			}
> 			// for Hadoop 2.xx
> 			else {
> 				clazz = Class.forName("org.apache.hadoop.mapreduce.JobContext", true, Thread.currentThread().getContextClassLoader());
> 			}
> 			Constructor<?> constructor = clazz.getConstructor(Configuration.class, JobID.class);
> 			JobContext context = (JobContext) constructor.newInstance(configuration, jobId);
> 			
> 			return context;
> 		} catch(Exception e) {
> 			throw new Exception("Could not create instance of JobContext.");
> 		}
> 	}
> {code}
> And 
> {code:java}
> 	public static TaskAttemptContext instantiateTaskAttemptContext(Configuration configuration,
 TaskAttemptID taskAttemptID) throws Exception {
> 		try {
> 			Class<?> clazz;
> 			// for Hadoop 1.xx
> 			if(JobContext.class.isInterface()) {
> 				clazz = Class.forName("org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl");
> 			}
> 			// for Hadoop 2.xx
> 			else {
> 				clazz = Class.forName("org.apache.hadoop.mapreduce.TaskAttemptContext");
> 			}
> 			Constructor<?> constructor = clazz.getConstructor(Configuration.class, TaskAttemptID.class);
> 			TaskAttemptContext context = (TaskAttemptContext) constructor.newInstance(configuration,
taskAttemptID);
> 			
> 			return context;
> 		} catch(Exception e) {
> 			throw new Exception("Could not create instance of TaskAttemptContext.");
> 		}
> 	}
> {code}



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