Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/17179#discussion_r106054568
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/StateStore.scala
---
@@ -50,6 +50,8 @@ trait StateStore {
/** Get the current value of a key. */
def get(key: UnsafeRow): Option[UnsafeRow]
+ def filter(condition: (UnsafeRow, UnsafeRow) => Boolean):
Iterator[(UnsafeRow, UnsafeRow)]
--- End diff --
Could you add a comment saying that the caller should only remove the key
that it's accessing? Removing other keys is indeterministic.
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