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https://issues.apache.org/jira/browse/FLINK-5041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15725661#comment-15725661
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ASF GitHub Bot commented on FLINK-5041:
---------------------------------------
Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/2781#discussion_r91084572
--- Diff:
flink-runtime/src/main/java/org/apache/flink/migration/streaming/runtime/tasks/StreamTaskState.java
---
@@ -0,0 +1,177 @@
+/*
+ * 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.streaming.runtime.tasks;
+
+import org.apache.flink.annotation.Internal;
+import org.apache.flink.migration.runtime.state.KvStateSnapshot;
+import org.apache.flink.migration.runtime.state.StateHandle;
+import org.apache.flink.util.ExceptionUtils;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.Serializable;
+import java.util.ConcurrentModificationException;
+import java.util.HashMap;
+import java.util.Iterator;
+
+@Deprecated
+@Internal
+public class StreamTaskState implements Serializable, Closeable {
+
+ private static final long serialVersionUID = 1L;
+
+ private StateHandle<?> operatorState;
+
+ private StateHandle<Serializable> functionState;
+
+ private HashMap<String, KvStateSnapshot<?, ?, ?, ?>> kvStates;
+
+ //
------------------------------------------------------------------------
+
+ public StateHandle<?> getOperatorState() {
+ return operatorState;
+ }
+
+ public void setOperatorState(StateHandle<?> operatorState) {
+ this.operatorState = operatorState;
+ }
+
+ public StateHandle<Serializable> getFunctionState() {
+ return functionState;
+ }
+
+ public void setFunctionState(StateHandle<Serializable> functionState) {
+ this.functionState = functionState;
+ }
+
+ public HashMap<String, KvStateSnapshot<?, ?, ?, ?>> getKvStates() {
+ return kvStates;
+ }
+
+ public void setKvStates(HashMap<String, KvStateSnapshot<?, ?, ?, ?>>
kvStates) {
+ this.kvStates = kvStates;
+ }
+
+ //
------------------------------------------------------------------------
+
+ /**
+ * Checks if this state object actually contains any state, or if all
of the state
+ * fields are null.
+ *
+ * @return True, if all state is null, false if at least one state is
not null.
+ */
+ public boolean isEmpty() {
+ return operatorState == null & functionState == null & kvStates
== null;
+ }
+
+ /**
+ * Discards all the contained states and sets them to null.
+ *
+ * @throws Exception Forwards exceptions that occur when releasing the
+ * state handles and snapshots.
+ */
+ public void discardState() throws Exception {
+ StateHandle<?> operatorState = this.operatorState;
--- End diff --
Deactivate this method (see above)
> Implement savepoint backwards compatibility 1.1 -> 1.2
> ------------------------------------------------------
>
> Key: FLINK-5041
> URL: https://issues.apache.org/jira/browse/FLINK-5041
> Project: Flink
> Issue Type: New Feature
> Components: State Backends, Checkpointing
> Affects Versions: 1.2.0
> Reporter: Stefan Richter
> Assignee: Stefan Richter
>
> This issue tracks the implementation of backwards compatibility between Flink
> 1.1 and 1.2 releases.
> This task subsumes:
> - Converting old savepoints to new savepoints, including a conversion of
> state handles to their new replacement.
> - Converting keyed state from old backend implementations to their new
> counterparts.
> - Converting operator and function state for all changed operators.
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