ericm-db commented on code in PR #44961:
URL: https://github.com/apache/spark/pull/44961#discussion_r1473543276
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sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/StateStore.scala:
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@@ -121,6 +131,9 @@ trait StateStore extends ReadStateStore {
def remove(key: UnsafeRow,
colFamilyName: String = StateStore.DEFAULT_COL_FAMILY_NAME): Unit
+ def merge(key: UnsafeRow, value: UnsafeRow,
+ colFamilyName: String = StateStore.DEFAULT_COL_FAMILY_NAME): Unit
Review Comment:
nit: indent
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sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/StateStore.scala:
##########
@@ -67,6 +67,16 @@ trait ReadStateStore {
def get(key: UnsafeRow,
colFamilyName: String = StateStore.DEFAULT_COL_FAMILY_NAME): UnsafeRow
+ /**
+ * Provides an iterator containing all values for a particular key. The
values are merged
+ * together and stored as a byte Array in the underlying state store. This
operation relies
+ * on state store encoder to be able to split the single array into multiple
values.
+ *
+ * Also see [[MultiValuedStateEncoder]] which supports encoding/decoding
multiple values per key.
+ */
+ def valuesIterator(key: UnsafeRow,
+ colFamilyName: String = StateStore.DEFAULT_COL_FAMILY_NAME):
Iterator[UnsafeRow]
Review Comment:
nit: indent
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