vladglinsky commented on issue #27603: [SPARK-30851][ML] Add 'path' field to the 'LoadInstanceEnd' ML listener event URL: https://github.com/apache/spark/pull/27603#issuecomment-587354002 This issue can be bypassed by caching loaded instances paths from `LoadInstanceStart` events using `reader` instance as a key. ``` private[this] val loadedInstancePaths = new mutable.WeakHashMap[MLReader[_], String]() ... case loadInstanceStart: LoadInstanceStart[_] => loadedInstancePaths.put(loadInstanceStart.reader, loadInstanceStart.path) case loadInstanceEnd: LoadInstanceEnd[_] => val path = loadedInstancePaths.get(loadInstanceEnd.reader) ... ```
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