Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/2781#discussion_r91083302
--- Diff:
flink-runtime/src/main/java/org/apache/flink/migration/runtime/checkpoint/SubtaskState.java
---
@@ -0,0 +1,108 @@
+/*
+ * 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.flink.migration.runtime.checkpoint;
+
+import org.apache.flink.migration.runtime.state.StateHandle;
+import org.apache.flink.migration.util.SerializedValue;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.Serializable;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+@Deprecated
+public class SubtaskState implements Serializable {
+
+ private static final long serialVersionUID = -2394696997971923995L;
+
+ private static final Logger LOG =
LoggerFactory.getLogger(SubtaskState.class);
+
+ /** The state of the parallel operator */
+ private final SerializedValue<StateHandle<?>> state;
+
+ /**
+ * The state size. This is also part of the deserialized state handle.
+ * We store it here in order to not deserialize the state handle when
+ * gathering stats.
+ */
+ private final long stateSize;
+
+ /** The duration of the acknowledged (ack timestamp - trigger
timestamp). */
+ private final long duration;
+
+ public SubtaskState(
+ SerializedValue<StateHandle<?>> state,
+ long stateSize,
+ long duration) {
+
+ this.state = checkNotNull(state, "State");
+ // Sanity check and don't fail checkpoint because of this.
+ this.stateSize = stateSize >= 0 ? stateSize : 0;
+
+ this.duration = duration;
+ }
+
+ //
--------------------------------------------------------------------------------------------
+
+ public SerializedValue<StateHandle<?>> getState() {
+ return state;
+ }
+
+ public long getStateSize() {
+ return stateSize;
+ }
+
+ public long getDuration() {
+ return duration;
+ }
+
+ public void discard(ClassLoader userClassLoader) throws Exception {
+ state.deserializeValue(userClassLoader).discardState();
--- End diff --
Deactivate this method (see above)
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