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Posted to issues@spark.apache.org by "Vaishali Papneja (Jira)" <ji...@apache.org> on 2020/08/18 15:47:00 UTC
[jira] [Reopened] (SPARK-32650) Not able to Deserialize Mleap
bundle with latest spark configuration
[ https://issues.apache.org/jira/browse/SPARK-32650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vaishali Papneja reopened SPARK-32650:
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Hi,
Could you have a look at the error message. It says that a particular method named - ImpurityCalculator is not found.
*_java.lang.NoSuchMethodError: org.apache.spark.mllib.tree.impurity.ImpurityCalculator$.getCalculator(Ljava/lang/String;[D)Lorg/apache/spark/mllib/tree/impurity/ImpurityCalculator;_*
Ideally this method should be a part of DecisionTreeClassifier package. Please suggest on this.
> Not able to Deserialize Mleap bundle with latest spark configuration
> --------------------------------------------------------------------
>
> Key: SPARK-32650
> URL: https://issues.apache.org/jira/browse/SPARK-32650
> Project: Spark
> Issue Type: Bug
> Components: Build
> Affects Versions: 3.0.0
> Reporter: Vaishali Papneja
> Priority: Major
>
> Hi,
>
> I am using Databricks cluster with configuration as Spark: 3.0.0 and Scala: 2.12 and want to create Machine Learning pipelines using MLeap - latest version: 0.16.1.
> In my pipeline, I have created ensemble model. I am to serialize the model to a bundle.
> But the issue comes while deserializing it. Below is the error I am facing:
> _java.lang.NoSuchMethodError: org.apache.spark.mllib.tree.impurity.ImpurityCalculator$.getCalculator(Ljava/lang/String;[D)Lorg/apache/spark/mllib/tree/impurity/ImpurityCalculator;_
>
> I tried using another cluster with the configuration as - spark: 2.4.5, scala: 2.11 and MLeap: 0.16.0. There it is working fine.
> Please suggest.
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