本文整理匯總了Java中org.apache.hadoop.fs.FSDataInputStream.readShort方法的典型用法代碼示例。如果您正苦於以下問題：Java FSDataInputStream.readShort方法的具體用法？Java FSDataInputStream.readShort怎麽用？Java FSDataInputStream.readShort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.fs.FSDataInputStream的用法示例。
在下文中一共展示了FSDataInputStream.readShort方法的1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: getInputStream
import org.apache.hadoop.fs.FSDataInputStream; //導入方法依賴的package包/類
@Override
protected InputStream getInputStream(PathData item) throws IOException {
FSDataInputStream i = (FSDataInputStream)super.getInputStream(item);
// Handle 0 and 1-byte files
short leadBytes;
try {
leadBytes = i.readShort();
} catch (EOFException e) {
i.seek(0);
return i;
}
// Check type of stream first
switch(leadBytes) {
case 0x1f8b: { // RFC 1952
// Must be gzip
i.seek(0);
return new GZIPInputStream(i);
}
case 0x5345: { // 'S' 'E'
// Might be a SequenceFile
if (i.readByte() == 'Q') {
i.close();
return new TextRecordInputStream(item.stat);
}
}
default: {
// Check the type of compression instead, depending on Codec class's
// own detection methods, based on the provided path.
CompressionCodecFactory cf = new CompressionCodecFactory(getConf());
CompressionCodec codec = cf.getCodec(item.path);
if (codec != null) {
i.seek(0);
return codec.createInputStream(i);
}
break;
}
case 0x4f62: { // 'O' 'b'
if (i.readByte() == 'j') {
i.close();
return new AvroFileInputStream(item.stat);
}
break;
}
}
// File is non-compressed, or not a file container we know.
i.seek(0);
return i;
}