HeartSaVioR commented on code in PR #45991: URL: https://github.com/apache/spark/pull/45991#discussion_r1574155684
########## sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/MapStateImplWithTTL.scala: ########## @@ -0,0 +1,280 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.spark.sql.execution.streaming + +import org.apache.spark.internal.Logging +import org.apache.spark.sql.Encoder +import org.apache.spark.sql.catalyst.encoders.ExpressionEncoder +import org.apache.spark.sql.execution.streaming.TransformWithStateKeyValueRowSchema.{COMPOSITE_KEY_ROW_SCHEMA, VALUE_ROW_SCHEMA_WITH_TTL} +import org.apache.spark.sql.execution.streaming.state.{PrefixKeyScanStateEncoderSpec, StateStore, StateStoreErrors} +import org.apache.spark.sql.streaming.{MapState, TTLConfig} +import org.apache.spark.util.NextIterator + +/** + * Class that provides a concrete implementation for map state associated with state + * variables (with ttl expiration support) used in the streaming transformWithState operator. + * @param store - reference to the StateStore instance to be used for storing state + * @param stateName - name of the state variable + * @param keyExprEnc - Spark SQL encoder for key + * @param userKeyEnc - Spark SQL encoder for the map key + * @param valEncoder - SQL encoder for state variable + * @param ttlConfig - the ttl configuration (time to live duration etc.) + * @param batchTimestampMs - current batch processing timestamp. + * @tparam K - type of key for map state variable + * @tparam V - type of value for map state variable + * @return - instance of MapState of type [K,V] that can be used to store state persistently + */ +class MapStateImplWithTTL[K, V]( + store: StateStore, + stateName: String, + keyExprEnc: ExpressionEncoder[Any], + userKeyEnc: Encoder[K], + valEncoder: Encoder[V], + ttlConfig: TTLConfig, + batchTimestampMs: Long) extends CompositeKeyTTLStateImpl(stateName, store, batchTimestampMs) + with MapState[K, V] with Logging { + + private val keySerializer = keyExprEnc.createSerializer() + private val stateTypesEncoder = new CompositeKeyStateEncoder( + keySerializer, userKeyEnc, valEncoder, COMPOSITE_KEY_ROW_SCHEMA, stateName, hasTtl = true) Review Comment: (Could be a part of MINOR FOLLOW-UP PR) This refactoring (COMPOSITE_KEY_ROW_SCHEMA) seems to be missed to be applied to MapStateImpl? Please revisit MapStateImpl and apply refactoring we missed so far. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
