Roman Boyko created FLINK-36779:
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Summary: topn.cache.size metric is incorrect and non-changing
during the time
Key: FLINK-36779
URL: https://issues.apache.org/jira/browse/FLINK-36779
Project: Flink
Issue Type: Bug
Components: Table SQL / Runtime
Reporter: Roman Boyko
AbstractTopNFunction#registerMetric uses 'long heapSize' to create the metric
'topn.cache.size' and set its value. But the heapSize is passed by value so it
remains the same during the operator life.
It's resulting to non-changing metric value for UpdatableTopNFunction and 0
metric value for AppendOnlyTopNFunction, FastTop1Function and
AppendOnlyFirstNFunction.
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