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https://issues.apache.org/jira/browse/FLINK-31191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dong Lin resolved FLINK-31191.
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Resolution: Fixed
> VectorIndexer should check whether doublesByColumn is null before snapshot
> --------------------------------------------------------------------------
>
> Key: FLINK-31191
> URL: https://issues.apache.org/jira/browse/FLINK-31191
> Project: Flink
> Issue Type: Bug
> Components: Library / Machine Learning
> Affects Versions: ml-2.2.0
> Reporter: Zhipeng Zhang
> Assignee: Zhipeng Zhang
> Priority: Major
> Labels: pull-request-available
> Fix For: ml-2.2.0
>
>
> Currently VectorIndexer would lead to NPE when doing checkpoint. It should
> check whether `doublesByColumn` is null before calling snapshot.
>
> logview:
> [https://github.com/apache/flink-ml/actions/runs/4249415318/jobs/7389547039]
> details:
>
>
> [735|https://github.com/apache/flink-ml/actions/runs/4249415318/jobs/7389547039#step:4:736]Caused
> by: java.lang.NullPointerException
> [736|https://github.com/apache/flink-ml/actions/runs/4249415318/jobs/7389547039#step:4:737]
> at
> org.apache.flink.ml.feature.vectorindexer.VectorIndexer$ComputeDistinctDoublesOperator.convertToListArray(VectorIndexer.java:232)
>
> [737|https://github.com/apache/flink-ml/actions/runs/4249415318/jobs/7389547039#step:4:738]
> at
> org.apache.flink.ml.feature.vectorindexer.VectorIndexer$ComputeDistinctDoublesOperator.snapshotState(VectorIndexer.java:228)
>
> [738|https://github.com/apache/flink-ml/actions/runs/4249415318/jobs/7389547039#step:4:739]
> at
> org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.snapshotState(StreamOperatorStateHandler.java:222)
>
> [739|https://github.com/apache/flink-ml/actions/runs/4249415318/jobs/7389547039#step:4:740]
> ... 33 more
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