Package org.apache.hadoop.mapreduce

Examples of org.apache.hadoop.mapreduce.RecordReader

180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
    Path [] files = { new Path("file1") };
    long [] lengths = { 1 };

    CombineFileSplit split = new CombineFileSplit(files, lengths);

    RecordReader rr = inputFormat.createRecordReader(split, context1);
    assertTrue("Unexpected RR type!", rr instanceof CombineFileRecordReader);

    // Verify that the initial configuration is the one being used.
    // Right after construction the dummy key should have value "STATE1"
    assertEquals("Invalid initial dummy key value", "STATE1",
      rr.getCurrentKey().toString());

    // Switch the active context for the RecordReader...
    Configuration conf2 = new Configuration();
    conf2.set(DUMMY_KEY, "STATE2");
    TaskAttemptContext context2 = new TaskAttemptContext(conf2, taskId);
    rr.initialize(split, context2);

    // And verify that the new context is updated into the child record reader.
    assertEquals("Invalid secondary dummy key value", "STATE2",
      rr.getCurrentKey().toString());
  }
View Full Code Here
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
    Path [] files = { new Path("file1"), new Path("file2") };
    long [] lengths = { 1, 1 };

    CombineFileSplit split = new CombineFileSplit(files, lengths);
    RecordReader rr = inputFormat.createRecordReader(split, context);
    assertTrue("Unexpected RR type!", rr instanceof CombineFileRecordReader);

    // first initialize() call comes from MapTask. We'll do it here.
    rr.initialize(split, context);

    // First value is first filename.
    assertTrue(rr.nextKeyValue());
    assertEquals("file1", rr.getCurrentValue().toString());

    // The inner RR will return false, because it only emits one (k, v) pair.
    // But there's another sub-split to process. This returns true to us.
    assertTrue(rr.nextKeyValue());
   
    // And the 2nd rr will have its initialize method called correctly.
    assertEquals("file2", rr.getCurrentValue().toString());
   
    // But after both child RR's have returned their singleton (k, v), this
    // should also return false.
    assertFalse(rr.nextKeyValue());
  }
View Full Code Here
165
166
167
168
169
170
171
172
173
174
    //Get the input format for the storage driver
    InputFormat inputFormat =
      storageDriver.getInputFormat(partitionInfo.getInputStorageDriverProperties());

    //Create the underlying input formats record record and an Howl wrapper
    RecordReader recordReader =
      inputFormat.createRecordReader(howlSplit.getBaseSplit(), taskContext);

    return new HowlRecordReader(storageDriver,recordReader);
  }
View Full Code Here
106
107
108
109
110
111
112
113
114
115
        // for backward compatibility
        PigInputFormat.sJob = conf;
       
        InputFormat inputFormat = loadFunc.getInputFormat();
        // now invoke the createRecordReader() with this "adjusted" conf
        RecordReader reader = inputFormat.createRecordReader(
                pigSplit.getWrappedSplit(), context);
       
        return new PigRecordReader(reader, loadFunc, conf);
    }
View Full Code Here
157
158
159
160
161
162
163
164
165
166
    //Get the input format for the storage driver
    InputFormat inputFormat =
      storageDriver.getInputFormat(partitionInfo.getInputStorageDriverProperties());

    //Create the underlying input formats record record and an HCat wrapper
    RecordReader recordReader =
      inputFormat.createRecordReader(hcatSplit.getBaseSplit(), taskContext);

    return new HCatRecordReader(storageDriver,recordReader);
  }
View Full Code Here
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
    Path [] files = { new Path("file1") };
    long [] lengths = { 1 };

    CombineFileSplit split = new CombineFileSplit(files, lengths);

    RecordReader rr = inputFormat.createRecordReader(split, context1);
    assertTrue("Unexpected RR type!", rr instanceof CombineFileRecordReader);

    // Verify that the initial configuration is the one being used.
    // Right after construction the dummy key should have value "STATE1"
    assertEquals("Invalid initial dummy key value", "STATE1",
      rr.getCurrentKey().toString());

    // Switch the active context for the RecordReader...
    Configuration conf2 = new Configuration();
    conf2.set(DUMMY_KEY, "STATE2");
    TaskAttemptContext context2 = new TaskAttemptContextImpl(conf2, taskId);
    rr.initialize(split, context2);

    // And verify that the new context is updated into the child record reader.
    assertEquals("Invalid secondary dummy key value", "STATE2",
      rr.getCurrentKey().toString());
  }
View Full Code Here
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
    Path [] files = { new Path("file1"), new Path("file2") };
    long [] lengths = { 1, 1 };

    CombineFileSplit split = new CombineFileSplit(files, lengths);
    RecordReader rr = inputFormat.createRecordReader(split, context);
    assertTrue("Unexpected RR type!", rr instanceof CombineFileRecordReader);

    // first initialize() call comes from MapTask. We'll do it here.
    rr.initialize(split, context);

    // First value is first filename.
    assertTrue(rr.nextKeyValue());
    assertEquals("file1", rr.getCurrentValue().toString());

    // The inner RR will return false, because it only emits one (k, v) pair.
    // But there's another sub-split to process. This returns true to us.
    assertTrue(rr.nextKeyValue());
   
    // And the 2nd rr will have its initialize method called correctly.
    assertEquals("file2", rr.getCurrentValue().toString());
   
    // But after both child RR's have returned their singleton (k, v), this
    // should also return false.
    assertFalse(rr.nextKeyValue());
  }
View Full Code Here
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
    Path [] files = { new Path("file1") };
    long [] lengths = { 1 };

    CombineFileSplit split = new CombineFileSplit(files, lengths);

    RecordReader rr = inputFormat.createRecordReader(split, context1);
    assertTrue("Unexpected RR type!", rr instanceof CombineFileRecordReader);

    // Verify that the initial configuration is the one being used.
    // Right after construction the dummy key should have value "STATE1"
    assertEquals("Invalid initial dummy key value", "STATE1",
      rr.getCurrentKey().toString());

    // Switch the active context for the RecordReader...
    Configuration conf2 = new Configuration();
    conf2.set(DUMMY_KEY, "STATE2");
    TaskAttemptContext context2 = new TaskAttemptContextImpl(conf2, taskId);
    rr.initialize(split, context2);

    // And verify that the new context is updated into the child record reader.
    assertEquals("Invalid secondary dummy key value", "STATE2",
      rr.getCurrentKey().toString());
  }
View Full Code Here
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
    Path [] files = { new Path("file1"), new Path("file2") };
    long [] lengths = { 1, 1 };

    CombineFileSplit split = new CombineFileSplit(files, lengths);
    RecordReader rr = inputFormat.createRecordReader(split, context);
    assertTrue("Unexpected RR type!", rr instanceof CombineFileRecordReader);

    // first initialize() call comes from MapTask. We'll do it here.
    rr.initialize(split, context);

    // First value is first filename.
    assertTrue(rr.nextKeyValue());
    assertEquals("file1", rr.getCurrentValue().toString());

    // The inner RR will return false, because it only emits one (k, v) pair.
    // But there's another sub-split to process. This returns true to us.
    assertTrue(rr.nextKeyValue());
   
    // And the 2nd rr will have its initialize method called correctly.
    assertEquals("file2", rr.getCurrentValue().toString());
   
    // But after both child RR's have returned their singleton (k, v), this
    // should also return false.
    assertFalse(rr.nextKeyValue());
  }
View Full Code Here
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
    Path [] files = { new Path("file1") };
    long [] lengths = { 1 };

    CombineFileSplit split = new CombineFileSplit(files, lengths);

    RecordReader rr = inputFormat.createRecordReader(split, context1);
    assertTrue("Unexpected RR type!", rr instanceof CombineFileRecordReader);

    // Verify that the initial configuration is the one being used.
    // Right after construction the dummy key should have value "STATE1"
    assertEquals("Invalid initial dummy key value", "STATE1",
      rr.getCurrentKey().toString());

    // Switch the active context for the RecordReader...
    Configuration conf2 = new Configuration();
    conf2.set(DUMMY_KEY, "STATE2");
    TaskAttemptContext context2 = new TaskAttemptContextImpl(conf2, taskId);
    rr.initialize(split, context2);

    // And verify that the new context is updated into the child record reader.
    assertEquals("Invalid secondary dummy key value", "STATE2",
      rr.getCurrentKey().toString());
  }
View Full Code Here
TOP

Related Classes of org.apache.hadoop.mapreduce.RecordReader

  • com.endgame.binarypig.loaders.AbstractExecutingLoaderTest
  • com.endgame.binarypig.loaders.BinarySequenceFileLoaderTest
  • com.facebook.giraph.hive.impl.input.benchmark.InputBenchmark
  • com.tinkerpop.gremlin.giraph.structure.io.graphson.GraphSONRecordReaderWriterTest
  • com.tinkerpop.gremlin.giraph.structure.io.kryo.KryoRecordReaderWriterTest
  • com.twitter.elephantbird.pig.load.TestLocationAsTuple
  • org.apache.hadoop.mapreduce.lib.chain.Chain
  • org.apache.hadoop.mapreduce.lib.input.TestCombineFileInputFormat
  • org.apache.hcatalog.mapreduce.HCatBaseInputFormat
  • org.apache.howl.mapreduce.HowlInputFormat
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.