Examples with OutputContext org.apache.tez.runtime.api.OutputContext used on opensource projects

Example 61 with OutputContext

use of org.apache.tez.runtime.api.OutputContext in project tez by apache.

the class TestMROutputLegacy method testOldAPI_MapperOnly.

// simulate the behavior of translating Mapper-only job to DAG using MR old API
@Test(timeout = 5000)
public void testOldAPI_MapperOnly() throws Exception {
    String outputPath = "/tmp/output";
    JobConf conf = new JobConf();
    conf.setOutputKeyClass(NullWritable.class);
    conf.setOutputValueClass(Text.class);
    conf.setOutputFormat(org.apache.hadoop.mapred.SequenceFileOutputFormat.class);
    org.apache.hadoop.mapred.SequenceFileOutputFormat.setOutputPath(conf, new Path(outputPath));
    // the output is attached to mapper
    conf.setBoolean(MRConfig.IS_MAP_PROCESSOR, true);
    UserPayload vertexPayload = TezUtils.createUserPayloadFromConf(conf);
    OutputDescriptor od = OutputDescriptor.create(MROutputLegacy.class.getName()).setUserPayload(vertexPayload);
    DataSinkDescriptor sink = DataSinkDescriptor.create(od, OutputCommitterDescriptor.create(MROutputCommitter.class.getName()), null);
    OutputContext outputContext = createMockOutputContext(sink.getOutputDescriptor().getUserPayload());
    MROutputLegacy output = new MROutputLegacy(outputContext, 2);
    output.initialize();
    assertEquals(false, output.useNewApi);
    assertEquals(org.apache.hadoop.mapred.SequenceFileOutputFormat.class, output.oldOutputFormat.getClass());
    assertNull(output.newOutputFormat);
    assertEquals(NullWritable.class, output.oldApiTaskAttemptContext.getOutputKeyClass());
    assertEquals(Text.class, output.oldApiTaskAttemptContext.getOutputValueClass());
    assertNull(output.newApiTaskAttemptContext);
    assertNotNull(output.oldRecordWriter);
    assertNull(output.newRecordWriter);
    assertEquals(org.apache.hadoop.mapred.FileOutputCommitter.class, output.committer.getClass());
}