cloud-fan commented on a change in pull request #27716:
[SPARK-30964][Core][WebUI] Accelerate InMemoryStore with a new index
URL: https://github.com/apache/spark/pull/27716#discussion_r385194333
##########
File path:
common/kvstore/src/main/java/org/apache/spark/util/kvstore/InMemoryStore.java
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@@ -163,6 +163,12 @@ public void clear() {
}
}
+ /**
+ * An alias class for the type "ConcurrentHashMap<Comparable<Object>,
Boolean>", which is used
+ * as a concurrent hashset for storing natural keys.
Review comment:
`... storing natural keys, and the boolean value doesn't matter.`
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