HeartSaVioR commented on code in PR #46351:
URL: https://github.com/apache/spark/pull/46351#discussion_r1589746596
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sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/HDFSBackedStateStoreProvider.scala:
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@@ -351,7 +351,7 @@ private[sql] class HDFSBackedStateStoreProvider extends
StateStoreProvider with
}
override def close(): Unit = {
- synchronized { loadedMaps.values.asScala.foreach(_.clear()) }
+ synchronized {
loadedMaps.keySet().asScala.toSeq.foreach(loadedMaps.remove) }
Review Comment:
It may not be very huge as we are only copying the "map" and the memory
usage of UnsafeRow would be the same, but the proposed way is still an
optimized one (removing the overhead of copying) so I agree it's better.
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