SequenceFileLogWriter.java 文件源码

java
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项目:ditb 作者:
/**
 * Create sequence file Metadata for our WAL file with version and compression
 * type (if any).
 * @param conf
 * @param compress
 * @return Metadata instance.
 */
private static Metadata createMetadata(final Configuration conf,
    final boolean compress) {
  TreeMap<Text, Text> metaMap = new TreeMap<Text, Text>();
  metaMap.put(WAL_VERSION_KEY, new Text("1"));
  if (compress) {
    // Currently we only do one compression type.
    metaMap.put(WAL_COMPRESSION_TYPE_KEY, DICTIONARY_COMPRESSION_TYPE);
  }
  return new Metadata(metaMap);
}
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