org.apache.hadoop.tools.rumen

Class JobTraceReader

java.lang.Object

org.apache.hadoop.tools.rumen.JobTraceReader

All Implemented Interfaces:

Closeable, AutoCloseable

public class JobTraceReader
extends Object

Reading JSON-encoded job traces and produce LoggedJob instances.

Constructor Summary

Constructors

Constructor and Description
JobTraceReader(InputStream input) Constructor.
JobTraceReader(Path path, Configuration conf) Constructor.

Method Summary

Modifier and Type	Method and Description
void	close()
T	getNext() Get the next object from the trace.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JobTraceReader

public JobTraceReader(Path path,
                      Configuration conf)
               throws IOException

Constructor.

Parameters:

path - Path to the JSON trace file, possibly compressed.

conf -

Throws:

IOException

JobTraceReader

public JobTraceReader(InputStream input)
               throws IOException

Constructor.

Parameters:

input - The input stream for the JSON trace.

Throws:

IOException

Method Detail

getNext

public T getNext()
          throws IOException

Get the next object from the trace.

Returns:

The next instance of the object. Or null if we reach the end of stream.

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException