unable to connect h20 server python3

[Pilar Badiola]

Hi! Could anybody please help me?

The first time i´m able to connect but the second time i get this error

Any idea??

Thanks a lot 

bash-4.3# python3 scriptPredictions.py

Checking whether there is an H2O instance running at http://127.0.0.1:54321..... not found.

Attempting to start a local H2O server...

  Java Version: openjdk version "1.8.0_121"; OpenJDK Runtime Environment (IcedTea 3.3.0) (Alpine 8.121.13-r0); OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode)

  Starting server from /usr/lib/python3.5/site-packages/h2o/backend/bin/h2o.jar

  Ice root: /tmp/tmph0ep1rpb

  JVM stdout: /tmp/tmph0ep1rpb/h2o_unknownUser_started_from_python.out

  JVM stderr: /tmp/tmph0ep1rpb/h2o_unknownUser_started_from_python.err

Traceback (most recent call last):

  File "/usr/lib/python3.5/site-packages/h2o/h2o.py", line 252, in init

    "connected.", "not found."))

  File "/usr/lib/python3.5/site-packages/h2o/backend/connection.py", line 318, in open

    conn._cluster = conn._test_connection(retries, messages=_msgs)

  File "/usr/lib/python3.5/site-packages/h2o/backend/connection.py", line 588, in _test_connection

    % (self._base_url, max_retries, "\n".join(errors)))

h2o.exceptions.H2OConnectionError: Could not establish link to the H2O cloud http://127.0.0.1:54321 after 5 retries

[56:36.65] H2OConnectionError: Unexpected HTTP error: HTTPConnectionPool(host='127.0.0.1', port=54321): Max retries exceeded with url: /3/Cloud (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f93deb0fdd8>: Failed to establish a new connection: [Errno 111] Connection refused',))

[56:36.85] H2OConnectionError: Unexpected HTTP error: HTTPConnectionPool(host='127.0.0.1', port=54321): Max retries exceeded with url: /3/Cloud (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f93deab0550>: Failed to establish a new connection: [Errno 111] Connection refused',))

[56:37.06] H2OConnectionError: Unexpected HTTP error: HTTPConnectionPool(host='127.0.0.1', port=54321): Max retries exceeded with url: /3/Cloud (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f93deb0f5f8>: Failed to establish a new connection: [Errno 111] Connection refused',))

[56:37.26] H2OConnectionError: Unexpected HTTP error: HTTPConnectionPool(host='127.0.0.1', port=54321): Max retries exceeded with url: /3/Cloud (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f93deab0358>: Failed to establish a new connection: [Errno 111] Connection refused',))

[56:37.46] H2OConnectionError: Unexpected HTTP error: HTTPConnectionPool(host='127.0.0.1', port=54321): Max retries exceeded with url: /3/Cloud (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f93deab0c18>: Failed to establish a new connection: [Errno 111] Connection refused',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "scriptPredictions.py", line 2, in <module>

    h2o.init(ip="127.0.0.1",port="54321",max_mem_size = "1G")

  File "/usr/lib/python3.5/site-packages/h2o/h2o.py", line 261, in init

    min_mem_size=mmin, ice_root=ice_root, port=port, extra_classpath=extra_classpath)

  File "/usr/lib/python3.5/site-packages/h2o/backend/server.py", line 121, in start

    mmax=max_mem_size, mmin=min_mem_size)

  File "/usr/lib/python3.5/site-packages/h2o/backend/server.py", line 317, in _launch_server

    raise H2OServerError("Server process terminated with error code %d" % proc.returncode)

h2o.exceptions.H2OServerError: Server process terminated with error code -11

[kev...@gmail.com]

I'm new to H2O so I can't be of much help - but the error seems to be stemming from your argument setting the memory allocation. Perhaps just try

h2o.init(ip="127.0.0.1",port="54321")

and see if it connects.

[Darren Cook]

> The first time i´m able to connect but the second time i get this error

It could be that it had gone unstable, if you've filled up the memory
("1G" is fine for experimenting with iris-size data sets, but you might
want more with bigger data or when making a lot of models).

Checking to see you can connect via Flow is always a good idea (and you
can also see free memory there).

Darren

> / h2o.init(ip="127.0.0.1",port="54321",max_mem_size = "1G")/

[Pilar Badiola]

Thanks to both of you, neither of the two options works for me

[Tom Kraljevic]

look at the JVM stdout/err tmp files that are created for a clue as to what is going on.

the output you pasted earlier gives the location.

tom

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[Pilar Badiola]

Hi Tom, 

Thank you very much. The stdout file gives me this information: I guees this is not relationed with h2o isnt it? Thank u

bash-4.3# cat h2o_unknownUser_started_from_python.out

Cannot load library from path lib/linux_64/libxgboost4j_gpu.so

Cannot load library from path lib/libxgboost4j_gpu.so

Failed to load library from both native path and jar!

Cannot load library from path lib/linux_64/libxgboost4j_omp.so

Cannot load library from path lib/libxgboost4j_omp.so

Failed to load library from both native path and jar!

Cannot load library from path lib/linux_64/libxgboost4j_minimal.so

Cannot load library from path lib/libxgboost4j_minimal.so

Failed to load library from both native path and jar!

#

# A fatal error has been detected by the Java Runtime Environment:

#

#  SIGSEGV (0xb) at pc=0x00007f57365d4085, pid=8466, tid=0x00007f573680bab0

#

# JRE version: OpenJDK Runtime Environment (8.0_171-b11) (build 1.8.0_171-b11)

# Java VM: OpenJDK 64-Bit Server VM (25.171-b11 mixed mode linux-amd64 compressed oops)

# Derivative: IcedTea 3.8.0

# Distribution: Custom build (Thu Jun 14 11:41:56 GMT 2018)

# Problematic frame:

# C  [ld-musl-x86_64.so.1+0x50085]  memcpy+0x11

#

# Core dump written. Default location: /opt/nifi/scriptPredicciones/core or core.8466

#

# An error report file with more information is saved as:

# /opt/nifi/scriptPredicciones/hs_err_pid8466.log

#

# If you would like to submit a bug report, please include

# instructions on how to reproduce the bug and visit:

#   http://icedtea.classpath.org/bugzilla 

[Tom Kraljevic]

you hit an openjdk bug.

update java on your system, and try again.

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[Pilar Badiola]

Hi again Tom, i have one last question. ive just downloaded de openjdk7. I have to chage any configure file in h20 to get the new version of Java?? Thank u very much

[Tom Kraljevic]

try setting JAVA_HOME env var.

tom

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