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Zhipeng Zhang resolved FLINK-30730. ----------------------------------- Fix Version/s: ml-2.2.0 Resolution: Fixed Fixed on master via 2b83d247cb5e81fb04b31399d436dbb9e809a473 > StringIndexer cannot handle null values correctly > ------------------------------------------------- > > Key: FLINK-30730 > URL: https://issues.apache.org/jira/browse/FLINK-30730 > Project: Flink > Issue Type: Bug > Components: Library / Machine Learning > Affects Versions: ml-2.1.0 > Reporter: Fan Hong > Assignee: Fan Hong > Priority: Major > Labels: pull-request-available > Fix For: ml-2.2.0 > > > When training data contains null values, StringIndexer throws a exception. > The reason is this method [1]: null values are neither String type nor Number > type. > In StringIndexerModel, null values are also not handled correctly when > performing transformation. > > [1] > [https://github.com/apache/flink-ml/blob/966cedd7bbab4e12d8d8b37dbd582146714e68a6/flink-ml-lib/src/main/java/org/apache/flink/ml/feature/stringindexer/StringIndexer.java#L164] -- This message was sent by Atlassian Jira (v8.20.10#820010)