问题
Checking whether there is an H2O instance running at http://localhost:54321..... not found.
Attempting to start a local H2O server...
Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)
Starting server from C:\Users\Ramakanth\Anaconda2\lib\site-packages\h2o\backend\bin\h2o.jar Ice root: c:\users\ramaka~1\appdata\local\temp\tmpeaff8n JVM stdout: c:\users\ramaka~1\appdata\local\temp\tmpeaff8n\h2o_Ramakanth_started_from_python.out JVM stderr: c:\users\ramaka~1\appdata\local\temp\tmpeaff8n\h2o_Ramakanth_started_from_python.err Traceback (most recent call last): File "", line 1, in File "C:\Users\Ramakanth\Anaconda2\lib\site-packages\h2o\h2o.py", line 262, in init min_mem_size=mmin, ice_root=ice_root, port=port, extra_classpath=extra_classpath) File "C:\Users\Ramakanth\Anaconda2\lib\site-packages\h2o\backend\server.py", line 121, in start mmax=max_mem_size, mmin=min_mem_size) File "C:\Users\Ramakanth\Anaconda2\lib\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 1
回答1:
Assuming "build 9.0.1+11" means Java 9, that is your problem: H2O currently only supports Java 7 or Java 8. This is the ticket to follow for adding Java 9 support. In the meantime uninstall your current Java, then install Java 8.
UPDATE: It seems Java 9 is now supported, so upgrade to h2o 3.20 or later.
BTW, normally you should be giving a lot more information: which language you are using, what code you used to try and start H2O (or the commandline if you started it that way), what OS, what versions of Java, R, Python, etc., number of cores, amount of memory, etc.
来源：https://stackoverflow.com/questions/48208691/unable-to-init-h2o-can-somebody-help-me-with-it