huanliwang-db commented on code in PR #46233:
URL: https://github.com/apache/spark/pull/46233#discussion_r1580437124
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sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/HDFSBackedStateStoreProvider.scala:
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@@ -437,6 +437,18 @@ private[sql] class HDFSBackedStateStoreProvider extends
StateStoreProvider with
private def putStateIntoStateCacheMap(
newVersion: Long,
map: HDFSBackedStateStoreMap): Unit = synchronized {
+ val loadedEntries = loadedMaps.size()
+ val lastKey: Option[Long] = if (loadedEntries > 0)
Some(loadedMaps.lastKey()) else None
+ if (lastKey.isDefined) {
+ logInfo(s"Trying to add version=$newVersion to state cache map with " +
+ s"current_size=$loadedEntries and last_loaded_version=${lastKey.get}
and " +
Review Comment:
the keys are stored in the reverse order, so the last key is the earliest
version:
https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/HDFSBackedStateStoreProvider.scala#L385-L386
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