我在安装pydoop包时遇到此错误：

root@ubuntu:~# pip install pydoop
Downloading/unpacking pydoop
  Downloading pydoop-1.0.0.tar.gz (931kB): 931kB downloaded
  Running setup.py (path:/tmp/pip_build_root/pydoop/setup.py) egg_info for package pydoop
    using setuptools version 15.0
    Traceback (most recent call last):
      File "<string>", line 17, in <module>
      File "/tmp/pip_build_root/pydoop/setup.py", line 59, in <module>
        import pydoop.hdfs.core.impl as hdfsimpl
      File "pydoop/hdfs/__init__.py", line 99, in <module>
        init()
      File "pydoop/hdfs/__init__.py", line 93, in init
        pydoop.hadoop_classpath(), _ORIG_CLASSPATH, pydoop.hadoop_conf()
      File "pydoop/__init__.py", line 106, in hadoop_classpath
        return _PATH_FINDER.hadoop_classpath(hadoop_home)
      File "pydoop/hadoop_utils.py", line 540, in hadoop_classpath
        hadoop_home = self.hadoop_home()
      File "pydoop/hadoop_utils.py", line 399, in hadoop_home
        PathFinder.__error("hadoop home", "HADOOP_HOME")
      File "pydoop/hadoop_utils.py", line 385, in __error
        raise ValueError("%s not found, try setting %s" % (what, env_var))
    ValueError: hadoop home not found, try setting HADOOP_HOME
    Complete output from command python setup.py egg_info:
    using setuptools version 15.0

回溯（最近一次呼叫）：

File "<string>", line 17, in <module>

  File "/tmp/pip_build_root/pydoop/setup.py", line 59, in <module>

    import pydoop.hdfs.core.impl as hdfsimpl

  File "pydoop/hdfs/__init__.py", line 99, in <module>

    init()

  File "pydoop/hdfs/__init__.py", line 93, in init

    pydoop.hadoop_classpath(), _ORIG_CLASSPATH, pydoop.hadoop_conf()

  File "pydoop/__init__.py", line 106, in hadoop_classpath

    return _PATH_FINDER.hadoop_classpath(hadoop_home)

  File "pydoop/hadoop_utils.py", line 540, in hadoop_classpath

    hadoop_home = self.hadoop_home()

  File "pydoop/hadoop_utils.py", line 399, in hadoop_home

    PathFinder.__error("hadoop home", "HADOOP_HOME")

  File "pydoop/hadoop_utils.py", line 385, in __error

    raise ValueError("%s not found, try setting %s" % (what, env_var))

ValueError: hadoop home not found, try setting HADOOP_HOME

正在清理。。。命令python setup.py egg\u info失败，/tmp/pip\u build\u root/pydoop中的错误代码为1，在/home/abhimanyu/.pip/pip.log中存储失败的调试日志