client-mr/core/src/main/java/org/apache/hadoop/mapreduce/RssMRUtils.java [235:242]:
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  public static long getTaskAttemptId(long blockId) {
    long mapId = blockId & Constants.MAX_TASK_ATTEMPT_ID;
    long attemptId =
        (blockId >> (Constants.TASK_ATTEMPT_ID_MAX_LENGTH + Constants.PARTITION_ID_MAX_LENGTH))
            & MAX_ATTEMPT_ID;
    return (attemptId << (Constants.TASK_ATTEMPT_ID_MAX_LENGTH + Constants.PARTITION_ID_MAX_LENGTH))
        + mapId;
  }
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client-tez/src/main/java/org/apache/tez/common/RssTezUtils.java [201:208]:
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  public static long getTaskAttemptId(long blockId) {
    long mapId = blockId & Constants.MAX_TASK_ATTEMPT_ID;
    long attemptId =
        (blockId >> (Constants.TASK_ATTEMPT_ID_MAX_LENGTH + Constants.PARTITION_ID_MAX_LENGTH))
            & MAX_ATTEMPT_ID;
    return (attemptId << (Constants.TASK_ATTEMPT_ID_MAX_LENGTH + Constants.PARTITION_ID_MAX_LENGTH))
        + mapId;
  }
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