gaborgsomogyi edited a comment on pull request #30336:
URL: https://github.com/apache/spark/pull/30336#issuecomment-728969992
> By the way, how can users know what is the name of custom metrics they can
list?
It's in the query progress info level log entry:
```
20/11/17 15:36:06 INFO MicroBatchExecution: Streaming query made progress: {
...
"stateOperators" : [ {
"numRowsTotal" : 30,
"numRowsUpdated" : 30,
"memoryUsedBytes" : 13144,
"numRowsDroppedByWatermark" : 0,
"customMetrics" : {
"loadedMapCacheHitCount" : 2,
"loadedMapCacheMissCount" : 0,
"stateOnCurrentVersionSizeBytes" : 6296
}
} ],
...
```
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