本文整理匯總了Java中org.apache.hadoop.mapreduce.lib.output.TextOutputFormat.getRecordWriter方法的典型用法代碼示例。如果您正苦於以下問題：Java TextOutputFormat.getRecordWriter方法的具體用法？Java TextOutputFormat.getRecordWriter怎麽用？Java TextOutputFormat.getRecordWriter使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.apache.hadoop.mapreduce.lib.output.TextOutputFormat的用法示例。
在下文中一共展示了TextOutputFormat.getRecordWriter方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: writeBadOutput
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat; //導入方法依賴的package包/類
private void writeBadOutput(TaskAttempt attempt, Configuration conf)
throws Exception {
TaskAttemptContext tContext = new TaskAttemptContextImpl(conf,
TypeConverter.fromYarn(attempt.getID()));
TextOutputFormat<?, ?> theOutputFormat = new TextOutputFormat();
RecordWriter theRecordWriter = theOutputFormat
.getRecordWriter(tContext);
NullWritable nullWritable = NullWritable.get();
try {
theRecordWriter.write(key2, val2);
theRecordWriter.write(null, nullWritable);
theRecordWriter.write(null, val2);
theRecordWriter.write(nullWritable, val1);
theRecordWriter.write(key1, nullWritable);
theRecordWriter.write(key2, null);
theRecordWriter.write(null, null);
theRecordWriter.write(key1, val1);
} finally {
theRecordWriter.close(tContext);
}
OutputFormat outputFormat = ReflectionUtils.newInstance(
tContext.getOutputFormatClass(), conf);
OutputCommitter committer = outputFormat.getOutputCommitter(tContext);
committer.commitTask(tContext);
}
示例2: writeOutput
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat; //導入方法依賴的package包/類
private void writeOutput(TaskAttempt attempt, Configuration conf)
throws Exception {
TaskAttemptContext tContext = new TaskAttemptContextImpl(conf,
TypeConverter.fromYarn(attempt.getID()));
TextOutputFormat<?, ?> theOutputFormat = new TextOutputFormat();
RecordWriter theRecordWriter = theOutputFormat
.getRecordWriter(tContext);
NullWritable nullWritable = NullWritable.get();
try {
theRecordWriter.write(key1, val1);
theRecordWriter.write(null, nullWritable);
theRecordWriter.write(null, val1);
theRecordWriter.write(nullWritable, val2);
theRecordWriter.write(key2, nullWritable);
theRecordWriter.write(key1, null);
theRecordWriter.write(null, null);
theRecordWriter.write(key2, val2);
} finally {
theRecordWriter.close(tContext);
}
OutputFormat outputFormat = ReflectionUtils.newInstance(
tContext.getOutputFormatClass(), conf);
OutputCommitter committer = outputFormat.getOutputCommitter(tContext);
committer.commitTask(tContext);
}