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https://issues.apache.org/jira/browse/FLINK-5041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15725652#comment-15725652
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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_r91084701
--- Diff:
flink-runtime/src/main/java/org/apache/flink/migration/streaming/runtime/tasks/StreamTaskStateList.java
---
@@ -0,0 +1,121 @@
+/*
+ * 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.IOException;
+import java.util.HashMap;
+
+@Deprecated
+@Internal
+public class StreamTaskStateList implements StateHandle<StreamTaskState[]>
{
+
+ private static final long serialVersionUID = 1L;
+
+ /** The states for all operator */
+ private final StreamTaskState[] states;
+
+ public StreamTaskStateList(StreamTaskState[] states) throws Exception {
+ this.states = states;
+ }
+
+ public boolean isEmpty() {
+ for (StreamTaskState state : states) {
+ if (state != null) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ @Override
+ public StreamTaskState[] getState(ClassLoader userCodeClassLoader) {
+ return states;
+ }
+
+ @Override
+ public void discardState() throws Exception {
+ for (StreamTaskState state : states) {
--- 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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