title: Can't seem to get the latest version of H2O to work
body: <p>I'm learning how to use h2o but I can't seem to get the latest version to work in Jupyter Notebooks. I can manage to get it running with a very old version though (about 1 year and a few months old). I keep getting stuck when I try to initialise it </p>
  
  <pre><code>import h2o
  h2o.init()
  </code></pre>
  
  <p>I found there were several versions of h2o that I could download online. Here's what I tried:</p>
  
  <p>I had first downloaded h2o from here (<a href="https://anaconda.org/anaconda/h2o" rel="nofollow noreferrer">https://anaconda.org/anaconda/h2o</a>) but it could not find the module when I tried importing it over in Jupyter (I installed the package and opened up Jupyter with the same environment [Python 3.6]). This was fixed when I downloaded the additional h2o-py package (<a href="https://anaconda.org/anaconda/h2o-py" rel="nofollow noreferrer">https://anaconda.org/anaconda/h2o-py</a>). I could run H2O with these two packages installed, its just that its a pretty old version (3.18.0.2). </p>
  
  <p>Deleting the h2o and leaving only the h2o-py gives me this error: </p>
  
  <blockquote>
    <p>H2OStartupError: Cannot start local server: h2o.jar not found.</p>
  </blockquote>
  
  <p>I also tried getting the latest version from the h2o website (<a href="http://docs.h2o.ai/h2o/latest-stable/h2o-docs/downloading.html" rel="nofollow noreferrer">http://docs.h2o.ai/h2o/latest-stable/h2o-docs/downloading.html</a>) - I am assuming this is the one. I followed the downloading instructions for both pip and conda but neither worked. 
  I kept getting the H2O Connection Error and CalledProcess Error when I tried to initialise h2o.</p>
  
  <blockquote>
    <p>H2OConnectionError: Could not establish link to the H2O cloud <a href="http://localhost:54321" rel="nofollow noreferrer">http://localhost:54321</a> after 5 retries</p>
    
    <p>CalledProcessError: Command '['/usr/bin/java', '-version']' returned non-zero exit status 2.</p>
  </blockquote>
  
  <p>I tried this in combination with h2o-py, h2o and h2o together (latest one from the website), and just the h2o package alone but nothing is working. So far, the only thing that I got working was the h2o in combination with h2o-py, both of which are the older versions of h2o.</p>
  
  <p>Is there something that I'm missing?</p>
  
  <p>=======================================================================</p>
  
  <p><strong>TL;DR</strong></p>
  
  <p>With packages: </p>
  
  <p>1) h2o and h2o-py - <em>works, but is an older version</em></p>
  
  <p>2) h2o only - <em>cannot find module when importing</em></p>
  
  <p>3) h2o-py only - <em>H2OStartupError: h2o.jar not found</em></p>
  
  <p>4) h2o (latest version) and others (h2o (old version) or h2o-py)- <em>Connection Error when initialising</em></p>
  
  <p>5) all three packages together - <em>Cannot find module when importing</em></p>