The .getAlgo() Method of Pysparkling H2OGridSearch Throws Exception

[exalate-issue-sync]

It happens if getAlgo() is called for the third time and more.

{{>>> from pysparkling.ml import H2OGridSearch, H2OGBM}}

{{>>> grid = H2OGridSearch(labelCol="AGE", hyperParameters={"_seed": [1, 2, 3]}, splitRatio=0.8, algo=H2OGBM(), strategy="RandomDiscrete", maxModels=3, maxRuntimeSecs=60, selectBestModelBy="RMSE")}}

{{>>> grid.getAlgo()}}

{{H2OGBM_8fe5b86812f7}}

{{>>> grid.getAlgo()}}

{{H2OGBM_8fe5b86812f7}}

{{>>> grid.getAlgo()}}

{{Traceback (most recent call last):}}

{{File "", line 1, in }}

{{File "/private/var/folders/90/mnytclln4yxcykll81knhmzm0000gn/T/spark-f4cdaf5d-e18a-4699-8dfd-3e86f9339b76/userFiles-76281c45-e743-4c79-addf-18f4611d9d13/h2o_pysparkling_2.4-3.32.0.1-1-2.4.zip/ai/h2o/sparkling/ml/params/H2OGridSearchParams.py", line 95, in getAlgo}}

{{File "/Users/marek/software/spark/spark-2.4.4-bin-hadoop2.7/python/lib/py4j-0.10.7-src.zip/py4j/java_gateway.py", line 1257, in call}}

{{File "/Users/marek/software/spark/spark-2.4.4-bin-hadoop2.7/python/pyspark/sql/utils.py", line 63, in deco}}

{{return f(*a, **kw)}}

{{File "/Users/marek/software/spark/spark-2.4.4-bin-hadoop2.7/python/lib/py4j-0.10.7-src.zip/py4j/protocol.py", line 332, in get_return_value}}

{{py4j.protocol.Py4JError: An error occurred while calling o80.parameters. Trace:}}

{{py4j.Py4JException: Target Object ID does not exist for this gateway :o80}}

{{at py4j.Gateway.invoke(Gateway.java:279)}}

{{at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)}}

{{at py4j.commands.CallCommand.execute(CallCommand.java:79)}}

{{at py4j.GatewayConnection.run(GatewayConnection.java:238)}}

{{at java.lang.Thread.run(Thread.java:748)}}

or if the algo set via the setter.

{{>>> from pysparkling.ml import H2OGridSearch, H2OGBM, H2OGLM}}

{{>>> grid = H2OGridSearch(labelCol="AGE", hyperParameters={"_seed": [1, 2, 3]}, splitRatio=0.8, algo=H2OGBM(), strategy="RandomDiscrete", maxModels=3, maxRuntimeSecs=60, selectBestModelBy="RMSE")}}

{{>>> grid.getAlgo()}}

{{Traceback (most recent call last):}}

{{File "", line 1, in }}

{{File "/private/var/folders/90/mnytclln4yxcykll81knhmzm0000gn/T/spark-f4cdaf5d-e18a-4699-8dfd-3e86f9339b76/userFiles-76281c45-e743-4c79-addf-18f4611d9d13/h2o_pysparkling_2.4-3.32.0.1-1-2.4.zip/ai/h2o/sparkling/ml/params/H2OGridSearchParams.py", line 95, in getAlgo}}

{{File "/Users/marek/software/spark/spark-2.4.4-bin-hadoop2.7/python/lib/py4j-0.10.7-src.zip/py4j/java_gateway.py", line 1257, in call}}

{{File "/Users/marek/software/spark/spark-2.4.4-bin-hadoop2.7/python/pyspark/sql/utils.py", line 63, in deco}}

{{return f(*a, **kw)}}

{{File "/Users/marek/software/spark/spark-2.4.4-bin-hadoop2.7/python/lib/py4j-0.10.7-src.zip/py4j/protocol.py", line 332, in get_return_value}}

{{py4j.protocol.Py4JError: An error occurred while calling o2403.parameters. Trace:}}

{{py4j.Py4JException: Target Object ID does not exist for this gateway :o2403}}

{{at py4j.Gateway.invoke(Gateway.java:279)}}

{{at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)}}

{{at py4j.commands.CallCommand.execute(CallCommand.java:79)}}

{{at py4j.GatewayConnection.run(GatewayConnection.java:238)}}

{{at java.lang.Thread.run(Thread.java:748)}}

[DinukaH2O]

JIRA Issue Migration Info

Jira Issue: SW-2276
Assignee: Jakub Hava
Reporter: Marek Novotny
State: Resolved
Fix Version: 3.30.0.4-1
Attachments: N/A
Development PRs: Available

Linked PRs from JIRA

#2145

[hasithjp]

JIRA Issue Migration Info Cont'd

Jira Issue Created Date: 2020-05-28T06:37:29.650-0700