OSError：安装 h2o 时版本不匹配？

Question

我是 H2o 的新手。 根据文档，我为 python 安装了 H2o

$ pip install h2o

然后：

在：

import h2o
h2o.init()

出：

---

OSError                                   Traceback (most recent call last)
<ipython-input-1-07f8bb8f27db> in <module>()
      1 import h2o
----> 2 h2o.init()

/usr/local/lib/python3.5/site-packages/h2o/h2o.py in init(ip, port, start_h2o, enable_assertions, license, nthreads, max_mem_size, min_mem_size, ice_root, strict_version_check, proxy, https, insecure, username, password, max_mem_size_GB, min_mem_size_GB, proxies, size)
    849                 nthreads=nthreads,max_mem_size=max_mem_size,min_mem_size=min_mem_size,ice_root=ice_root,
    850                 strict_version_check=strict_version_check,proxy=proxy,https=https,insecure=insecure,username=username,
--> 851                 password=password,max_mem_size_GB=max_mem_size_GB,min_mem_size_GB=min_mem_size_GB,proxies=proxies,size=size)
    852   return None
    853 

/usr/local/lib/python3.5/site-packages/h2o/connection.py in __init__(self, ip, port, start_h2o, enable_assertions, license, nthreads, max_mem_size, min_mem_size, ice_root, strict_version_check, proxy, https, insecure, username, password, max_mem_size_GB, min_mem_size_GB, proxies, size)
    173           raise EnvironmentError("Version mismatch. H2O is version {0}, but the h2o-python package is version {1}. "
    174                                  "This is a developer build, please contact your developer."
--> 175                                  "".format(ver_h2o, str(ver_pkg)))
    176         else:
    177           raise EnvironmentError("Version mismatch. H2O is version {0}, but the h2o-python package is version {1}. "

OSError: Version mismatch. H2O is version 3.8.2.99999, but the h2o-python package is version 3.8.2.6-1. This is a developer build, please contact your developer.

从这个 网站，我试图解决这个问题如下：

h2o.shutdown

然后：

user@MacBook-Pro-of-User:~$ pip3 uninstall h2o
Uninstalling h2o-3.8.2.6-1:
  /usr/local/h2o_data/iris.csv
  /usr/local/h2o_data/prostate.csv
  /usr/local/h2o_jar/h2o.jar
  /usr/local/lib/python3.5/site-packages/h2o-3.8.2.6_1.dist-info/DESCRIPTION.rst
  /usr/local/lib/python3.5/site-packages/h2o-3.8.2.6_1.dist-info/INSTALLER
  /usr/local/lib/python3.5/site-packages/h2o-3.8.2.6_1.dist-info/METADATA
  /usr/local/lib/python3.5/site-packages/h2o-3.8.2.6_1.dist-info/RECORD
  /usr/local/lib/python3.5/site-packages/h2o-3.8.2.6_1.dist-info/WHEEL
  /usr/local/lib/python3.5/site-packages/h2o-3.8.2.6_1.dist-info/metadata.json
  /usr/local/lib/python3.5/site-packages/h2o-3.8.2.6_1.dist-info/top_level.txt
  /usr/local/lib/python3.5/site-packages/h2o/__init__.py
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/__init__.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/assembly.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/astfun.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/connection.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/cross_validation.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/demo.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/display.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/expr.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/frame.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/group_by.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/h2o.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/h2o_logging.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/job.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/__pycache__/two_dim_table.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/assembly.py
  /usr/local/lib/python3.5/site-packages/h2o/astfun.py
  /usr/local/lib/python3.5/site-packages/h2o/connection.py
  /usr/local/lib/python3.5/site-packages/h2o/cross_validation.py
  /usr/local/lib/python3.5/site-packages/h2o/demo.py
  /usr/local/lib/python3.5/site-packages/h2o/display.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__init__.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/__init__.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/deeplearning.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/estimator_base.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/gbm.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/glm.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/glrm.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/kmeans.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/naive_bayes.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/__pycache__/random_forest.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/estimators/deeplearning.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/estimator_base.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/gbm.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/glm.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/glrm.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/kmeans.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/naive_bayes.py
  /usr/local/lib/python3.5/site-packages/h2o/estimators/random_forest.py
  /usr/local/lib/python3.5/site-packages/h2o/expr.py
  /usr/local/lib/python3.5/site-packages/h2o/frame.py
  /usr/local/lib/python3.5/site-packages/h2o/grid/__init__.py
  /usr/local/lib/python3.5/site-packages/h2o/grid/__pycache__/__init__.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/grid/__pycache__/grid_search.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/grid/__pycache__/metrics.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/grid/grid_search.py
  /usr/local/lib/python3.5/site-packages/h2o/grid/metrics.py
  /usr/local/lib/python3.5/site-packages/h2o/group_by.py
  /usr/local/lib/python3.5/site-packages/h2o/h2o.py
  /usr/local/lib/python3.5/site-packages/h2o/h2o_logging.py
  /usr/local/lib/python3.5/site-packages/h2o/job.py
  /usr/local/lib/python3.5/site-packages/h2o/model/__init__.py
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/__init__.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/autoencoder.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/binomial.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/clustering.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/confusion_matrix.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/dim_reduction.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/metrics_base.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/model_base.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/model_builder.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/model_future.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/multinomial.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/__pycache__/regression.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/model/autoencoder.py
  /usr/local/lib/python3.5/site-packages/h2o/model/binomial.py
  /usr/local/lib/python3.5/site-packages/h2o/model/clustering.py
  /usr/local/lib/python3.5/site-packages/h2o/model/confusion_matrix.py
  /usr/local/lib/python3.5/site-packages/h2o/model/dim_reduction.py
  /usr/local/lib/python3.5/site-packages/h2o/model/metrics_base.py
  /usr/local/lib/python3.5/site-packages/h2o/model/model_base.py
  /usr/local/lib/python3.5/site-packages/h2o/model/model_builder.py
  /usr/local/lib/python3.5/site-packages/h2o/model/model_future.py
  /usr/local/lib/python3.5/site-packages/h2o/model/multinomial.py
  /usr/local/lib/python3.5/site-packages/h2o/model/regression.py
  /usr/local/lib/python3.5/site-packages/h2o/transforms/__init__.py
  /usr/local/lib/python3.5/site-packages/h2o/transforms/__pycache__/__init__.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/transforms/__pycache__/decomposition.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/transforms/__pycache__/preprocessing.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/transforms/__pycache__/transform_base.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/transforms/decomposition.py
  /usr/local/lib/python3.5/site-packages/h2o/transforms/preprocessing.py
  /usr/local/lib/python3.5/site-packages/h2o/transforms/transform_base.py
  /usr/local/lib/python3.5/site-packages/h2o/two_dim_table.py
  /usr/local/lib/python3.5/site-packages/h2o/utils/__init__.py
  /usr/local/lib/python3.5/site-packages/h2o/utils/__pycache__/__init__.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/utils/__pycache__/shared_utils.cpython-35.pyc
  /usr/local/lib/python3.5/site-packages/h2o/utils/shared_utils.py
Proceed (y/n)? y
  Successfully uninstalled h2o-3.8.2.6-1
user@MacBook-Pro-of-User:~$

然后我尝试升级到最新版本：

user@MacBook-Pro-of-User:~$ pip3 install http://h2o-release.s3.amazonaws.com/h2o/rel-turchin/6/Python/h2o-3.8.2.6-py2.py3-none-any.whl

但是，我收到了相同的错误消息：

OSError: Version mismatch. H2O is version 3.8.2.99999, but the h2o-python package is version 3.8.2.6. This is a developer build, please contact your developer.

如何为python正确安装h2o？。

Answer 1

首先使用最新版本的 H2O 再试一次：

pip3 uninstall h2o
pip3 install http://h2o-release.s3.amazonaws.com/h2o/rel-turchin/9/Python/h2o-3.8.2.9-py2.py3-none-any.whl

如果您遇到同样的问题，请执行以下操作：

看起来您的机器上已经运行了 H2O 的开发版本 (3.8.2.99999)。 您将需要终止运行开发版本的 H2O 集群。 您可以通过以下方式之一执行此操作：

• 导航到 H2O Flow Web GUI（如果您在本地运行，默认情况下将在 localhost:54321）。 在 GUI 中，单击“管理”菜单项，然后单击“关闭”。
• 终止运行 H2O 集群的 Java 进程。

杀死现有的 H2O 集群后，然后重新安装 h2o 模块，并直接从 Python 启动 H2O 集群，如下所示：

import h2o
h2o.init()

由于此时不会有现有的 H2O 集群在运行，因此 h2o Python 模块将为您启动一个（并且由于您从 Python 启动它，因此不会对版本感到困惑）。

有时会发生的情况是人们单独下载 H2O jar 文件，启动一个 H2O 集群，然后安装不同版本的 R 或 Python 包，从而导致不匹配错误。 我认为这可能是您的问题的原因。 通常启动一个 H2O 集群就像import h2o; h2o.init()一样简单import h2o; h2o.init() import h2o; h2o.init() 。

Answer 2

尝试使用非默认端口号。 例如： h2o.init(port=8888)

此错误可能是由于连接到已运行的版本错误的 H2O 服务器造成的。 当您运行h2o.init()它首先检查在默认端口 54321 上运行的现有服务器。如果系统上的另一个用户在该端口上运行不同的 H2O 版本，它将连接并引发版本冲突。

Answer 3

如果您打开了 h2o 窗口 @ http://localhost:54321 ，请确保在导入 python 或 python3 之前将其关闭（Admin->shutDown），因为它们会产生冲突。

Answer 4

In order to use H2O, need to update the h20 jar file to python version. 

删除磁盘上的 H20 版本并进行全新安装。然后pip install h20.

或按照以下说明操作：

http://www.h2o.ai/download/h2o/python

Answer 5

默认情况下，H2O 对版本不匹配是非常无情的。

要解决这个问题，你可以试试这个（不保证工作！）：

 h2o.init(
    strict_version_check=False
)