HeartSaVioR commented on code in PR #45038:
URL: https://github.com/apache/spark/pull/45038#discussion_r1487154735
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sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/RocksDBStateStoreProvider.scala:
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@@ -92,10 +108,17 @@ private[sql] class RocksDBStateStoreProvider
override def prefixScan(prefixKey: UnsafeRow, colFamilyName: String):
Iterator[UnsafeRowPair] = {
- require(encoder.supportPrefixKeyScan, "Prefix scan requires setting
prefix key!")
-
- val prefix = encoder.encodePrefixKey(prefixKey)
- rocksDB.prefixScan(prefix, colFamilyName).map(kv => encoder.decode(kv))
+ val kvEncoder = keyValueEncoderMap.get(colFamilyName)
+ require(kvEncoder._1.supportPrefixKeyScan,
+ "Prefix scan requires setting prefix key!")
+
+ val prefix = kvEncoder._1.encodePrefixKey(prefixKey)
+ rocksDB.prefixScan(prefix, colFamilyName).map { kv =>
+ val rowPair = new UnsafeRowPair()
Review Comment:
Please create this outside of lambda if it works - if we are creating pair
object per kv, it's no meaning of reusing this.
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