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Java KeyValue.getTimestampOffset方法代码示例

本文整理汇总了Java中org.apache.hadoop.hbase.KeyValue.getTimestampOffset方法的典型用法代码示例。如果您正苦于以下问题:Java KeyValue.getTimestampOffset方法的具体用法?Java KeyValue.getTimestampOffset怎么用?Java KeyValue.getTimestampOffset使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在org.apache.hadoop.hbase.KeyValue的用法示例。


在下文中一共展示了KeyValue.getTimestampOffset方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: writeKV

import org.apache.hadoop.hbase.KeyValue; //导入方法依赖的package包/类
/**
 * Compresses and writes ourKV to out, a DataOutput.
 * 
 * @param out the DataOutput
 * @param keyVal the KV to compress and write
 * @param writeContext the compressionContext to use.
 * @throws IOException
 */
public static void writeKV(final DataOutput out, KeyValue keyVal,
    CompressionContext writeContext) throws IOException {
  byte[] backingArray = keyVal.getBuffer();
  int offset = keyVal.getOffset();

  // we first write the KeyValue infrastructure as VInts.
  WritableUtils.writeVInt(out, keyVal.getKeyLength());
  WritableUtils.writeVInt(out, keyVal.getValueLength());
  WritableUtils.writeVInt(out, keyVal.getTagsLength());

  // now we write the row key, as the row key is likely to be repeated
  // We save space only if we attempt to compress elements with duplicates
  Compressor.writeCompressed(keyVal.getBuffer(), keyVal.getRowOffset(),
      keyVal.getRowLength(), out, writeContext.rowDict);


  // now family, if it exists. if it doesn't, we write a 0 length array.
  Compressor.writeCompressed(keyVal.getBuffer(), keyVal.getFamilyOffset(),
      keyVal.getFamilyLength(), out, writeContext.familyDict);

  // qualifier next
  Compressor.writeCompressed(keyVal.getBuffer(), keyVal.getQualifierOffset(),
      keyVal.getQualifierLength(), out,
      writeContext.qualifierDict);

  // now we write the rest uncompressed
  int pos = keyVal.getTimestampOffset();
  int remainingLength = keyVal.getLength() + offset - (pos);
  out.write(backingArray, pos, remainingLength);
}
 
开发者ID:fengchen8086,项目名称:ditb,代码行数:39,代码来源:KeyValueCompression.java


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