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Date: Fri, 14 Aug 2015 06:46:45 +0000 (UTC)
From: "Dmitry Yaraev (JIRA)" <jira@apache.org>
To: dev@mahout.apache.org
Message-ID: <JIRA.12856074.1439533955000.64797.1439534805782@Atlassian.JIRA>
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Subject: [jira] [Updated] (MAHOUT-1767) Unable to run tests on H2O enigne in
 distributed mode
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     [ https://issues.apache.org/jira/browse/MAHOUT-1767?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitry Yaraev updated MAHOUT-1767:
----------------------------------
    Description: 
When one follows the instructions located in [README.md for H2O module|https://github.com/apache/mahout/blob/master/h2o/README.md] and tries to run tests in the distributed mode, tests run only in the local mode. There are three steps in the instruction:

# {code}
host-1:~/mahout$ ./bin/mahout h2o-node
...
.. INFO: Cloud of size 1 formed [/W.X.Y.Z:54321]
{code}
# {code}
host-2:~/mahout$ ./bin/mahout h2o-node
...
.. INFO: Cloud of size 2 formed [/A.B.C.D:54322]
{code}
# {code}
host-N:~/mahout/h2o$ mvn test
...
.. INFO: Cloud of size 3 formed [/E.F.G.H:54323]
...
All tests passed.
...
host-N:~/mahout/h2o$
{code}

First two steps are for executing worker nodes. The last one is for executing tests. According to the instruction, after launching tests one more worker is started. And it should join to the same cloud which other worker nodes forms. But it does joined them because it has a different cloud name (or _masterURL_ in terms of the code). If you look in the code, you can find the following:
{code:title=DistributedH2OSuite.scala}
...
mahoutCtx = mahoutH2OContext("mah2out" + System.currentTimeMillis())
...
{code}

After we removed the generated suffix from the cloud name, it started to work.

  was:
When one follows the instructions located in [README.md for H2O module|https://github.com/apache/mahout/blob/master/h2o/README.md] and tries to run tests in the distributed mode, tests run only in the local mode. There are three steps in the instruction:

# {code}
host-1:~/mahout$ ./bin/mahout h2o-node
...
.. INFO: Cloud of size 1 formed [/W.X.Y.Z:54321]
{code}
# {code}
host-2:~/mahout$ ./bin/mahout h2o-node
...
.. INFO: Cloud of size 2 formed [/A.B.C.D:54322]
{code}
# {code}
host-N:~/mahout/h2o$ mvn test
...
.. INFO: Cloud of size 3 formed [/E.F.G.H:54323]
...
All tests passed.
...
host-N:~/mahout/h2o$
{code}

First two steps are for executing worker nodes. The last one is for executing tests. According to the instruction, after launching tests one more worker is started. And it should join to the same cloud which other worker nodes forms. But it does joined them because it has a different cloud name (or _masterURL_ in terms of the code). If you look in the code, you can find the following:
{code:title=DistributedH2OSuite.scala}
...
mahoutCtx = mahoutH2OContext("mah2out" + System.currentTimeMillis())
...
{code}

We tried to remove generated suffix from the cloud name. After that it started to work.


> Unable to run tests on H2O enigne in distributed mode
> -----------------------------------------------------
>
>                 Key: MAHOUT-1767
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1767
>             Project: Mahout
>          Issue Type: Bug
>          Components: Documentation
>    Affects Versions: 0.11.0
>            Reporter: Dmitry Yaraev
>
> When one follows the instructions located in [README.md for H2O module|https://github.com/apache/mahout/blob/master/h2o/README.md] and tries to run tests in the distributed mode, tests run only in the local mode. There are three steps in the instruction:
> # {code}
> host-1:~/mahout$ ./bin/mahout h2o-node
> ...
> .. INFO: Cloud of size 1 formed [/W.X.Y.Z:54321]
> {code}
> # {code}
> host-2:~/mahout$ ./bin/mahout h2o-node
> ...
> .. INFO: Cloud of size 2 formed [/A.B.C.D:54322]
> {code}
> # {code}
> host-N:~/mahout/h2o$ mvn test
> ...
> .. INFO: Cloud of size 3 formed [/E.F.G.H:54323]
> ...
> All tests passed.
> ...
> host-N:~/mahout/h2o$
> {code}
> First two steps are for executing worker nodes. The last one is for executing tests. According to the instruction, after launching tests one more worker is started. And it should join to the same cloud which other worker nodes forms. But it does joined them because it has a different cloud name (or _masterURL_ in terms of the code). If you look in the code, you can find the following:
> {code:title=DistributedH2OSuite.scala}
> ...
> mahoutCtx = mahoutH2OContext("mah2out" + System.currentTimeMillis())
> ...
> {code}
> After we removed the generated suffix from the cloud name, it started to work.


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