Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/18629#discussion_r127547169
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/HDFSBackedStateStoreProvider.scala
---
@@ -172,7 +172,9 @@ private[state] class HDFSBackedStateStoreProvider
extends StateStoreProvider wit
}
}
- override def numKeys(): Long = mapToUpdate.size()
+ override def metrics: StateStoreMetrics = {
+ StateStoreMetrics(mapToUpdate.size(),
SizeEstimator.estimate(mapToUpdate), Map.empty)
--- End diff --
Let me do some tests to understand how long it will take. For arrays it
will just sample, so it should not take that long.
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