Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/3442#discussion_r103689657
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/savepoint/SavepointV2Serializer.java
---
@@ -0,0 +1,109 @@
+/*
+ * 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.runtime.checkpoint.savepoint;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.URI;
+import java.util.Collection;
+import javax.annotation.Nullable;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.runtime.checkpoint.TaskState;
+import org.apache.flink.runtime.state.filesystem.FileStateHandle;
+
+/**
+ * A savepoint serializer that does not store absolute URIs for {@link
FileStateHandle}
+ * instances, allowing users to relocate savepoints as long as the file
structure
+ * within the savepoint directory stays the same.
+ */
+class SavepointV2Serializer extends
AbstractSavepointSerializer<SavepointV2> {
+
+ public static final SavepointV2Serializer INSTANCE = new
SavepointV2Serializer();
+
+ private SavepointV2Serializer() {
+ }
+
+ @Override
+ SavepointV2 createSavepoint(long checkpointId, Collection<TaskState>
taskStates) {
+ return new SavepointV2(checkpointId, taskStates);
+ }
+
+ @Override
+ void serializeFileStreamStateHandle(FileStateHandle fileStateHandle,
Path basePath, DataOutputStream dos) throws IOException {
--- End diff --
Here is the new serialization behaviour
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