CubeStatsReader.java 文件源码

public CubeStatsResult(Path path, int precision) throws IOException {
    Configuration hadoopConf = HadoopUtil.getCurrentConfiguration();
    Option seqInput = SequenceFile.Reader.file(path);
    try (Reader reader = new SequenceFile.Reader(hadoopConf, seqInput)) {
        LongWritable key = (LongWritable) ReflectionUtils.newInstance(reader.getKeyClass(), hadoopConf);
        BytesWritable value = (BytesWritable) ReflectionUtils.newInstance(reader.getValueClass(), hadoopConf);
        while (reader.next(key, value)) {
            if (key.get() == 0L) {
                percentage = Bytes.toInt(value.getBytes());
            } else if (key.get() == -1) {
                mapperOverlapRatio = Bytes.toDouble(value.getBytes());
            } else if (key.get() == -2) {
                mapperNumber = Bytes.toInt(value.getBytes());
            } else if (key.get() > 0) {
                HLLCounter hll = new HLLCounter(precision);
                ByteArray byteArray = new ByteArray(value.getBytes());
                hll.readRegisters(byteArray.asBuffer());
                counterMap.put(key.get(), hll);
            }
        }
    }
}