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The following commit(s) were added to refs/heads/master by this push:
new 05b27be4112 [FLINK-34668][checkpoint] Report operator state handle of
file merging directory to JM
05b27be4112 is described below
commit 05b27be4112e1f5ca4c5614b1714a202c13343b6
Author: fredia <[email protected]>
AuthorDate: Mon Mar 18 14:05:52 2024 +0800
[FLINK-34668][checkpoint] Report operator state handle of file merging
directory to JM
---
.../filemerging/FileMergingSnapshotManager.java | 12 ++
.../FileMergingSnapshotManagerBase.java | 32 +++++
...efaultOperatorStateBackendSnapshotStrategy.java | 27 +++-
.../filemerging/DirectoryStreamStateHandle.java | 90 ++++++++++++
.../EmptyFileMergingOperatorStreamStateHandle.java | 64 +++++++++
.../filemerging/EmptySegmentFileStateHandle.java | 46 ++++++
.../FileMergingOperatorStreamStateHandle.java | 154 +++++++++++++++++++++
.../filemerging/SegmentFileStateHandle.java | 5 +-
.../FileMergingCheckpointStateOutputStream.java | 2 +-
.../FsMergingCheckpointStorageLocation.java | 11 ++
...ssCheckpointFileMergingSnapshotManagerTest.java | 1 +
.../FileMergingSnapshotManagerTestBase.java | 1 +
...inCheckpointFileMergingSnapshotManagerTest.java | 1 +
.../runtime/state/OperatorStateBackendTest.java | 85 ++++++++++++
.../runtime/state/SharedStateRegistryTest.java | 86 ++++++++++++
...FileMergingCheckpointStateOutputStreamTest.java | 2 +-
.../FsMergingCheckpointStorageLocationTest.java | 2 +-
17 files changed, 614 insertions(+), 7 deletions(-)
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManager.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManager.java
index cc54854a7a3..afc5eb618dc 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManager.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManager.java
@@ -25,6 +25,7 @@ import org.apache.flink.runtime.execution.Environment;
import org.apache.flink.runtime.jobgraph.OperatorID;
import org.apache.flink.runtime.state.CheckpointedStateScope;
import org.apache.flink.runtime.state.TaskStateManager;
+import org.apache.flink.runtime.state.filemerging.DirectoryStreamStateHandle;
import
org.apache.flink.runtime.state.filesystem.FileMergingCheckpointStateOutputStream;
import org.apache.flink.runtime.state.filesystem.FsCheckpointStorageAccess;
@@ -117,6 +118,17 @@ public interface FileMergingSnapshotManager extends
Closeable {
*/
Path getManagedDir(SubtaskKey subtaskKey, CheckpointedStateScope scope);
+ /**
+ * Get the {@link DirectoryStreamStateHandle} of the managed directory,
created in {@link
+ * #initFileSystem} or {@link #registerSubtaskForSharedStates}.
+ *
+ * @param subtaskKey the subtask key identifying the subtask.
+ * @param scope the checkpoint scope.
+ * @return the {@link DirectoryStreamStateHandle} for one subtask in
specified checkpoint scope.
+ */
+ DirectoryStreamStateHandle getManagedDirStateHandle(
+ SubtaskKey subtaskKey, CheckpointedStateScope scope);
+
/**
* Notifies the manager that the checkpoint with the given {@code
checkpointId} completed and
* was committed.
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManagerBase.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManagerBase.java
index 3dc9c788561..d46edcd235e 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManagerBase.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManagerBase.java
@@ -27,6 +27,8 @@ import org.apache.flink.core.fs.OutputStreamAndPath;
import org.apache.flink.core.fs.Path;
import
org.apache.flink.runtime.checkpoint.filemerging.LogicalFile.LogicalFileId;
import org.apache.flink.runtime.state.CheckpointedStateScope;
+import org.apache.flink.runtime.state.filemerging.DirectoryStreamStateHandle;
+import org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle;
import
org.apache.flink.runtime.state.filesystem.FileMergingCheckpointStateOutputStream;
import org.apache.flink.util.FlinkRuntimeException;
import org.apache.flink.util.Preconditions;
@@ -37,6 +39,7 @@ import org.slf4j.LoggerFactory;
import javax.annotation.Nonnull;
import javax.annotation.concurrent.GuardedBy;
+import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.HashSet;
@@ -105,12 +108,24 @@ public abstract class FileMergingSnapshotManagerBase
implements FileMergingSnaps
*/
private final Map<SubtaskKey, Path> managedSharedStateDir = new
ConcurrentHashMap<>();
+ /**
+ * The {@link DirectoryStreamStateHandle} for shared state directories,
one for each subtask.
+ */
+ private final Map<SubtaskKey, DirectoryStreamStateHandle>
managedSharedStateDirHandles =
+ new ConcurrentHashMap<>();
+
/**
* The private state files are merged across subtasks, there is only one
directory for
* merged-files within one TM per job.
*/
protected Path managedExclusiveStateDir;
+ /**
+ * The {@link DirectoryStreamStateHandle} for private state directory, one
for each task
+ * manager.
+ */
+ protected DirectoryStreamStateHandle managedExclusiveStateDirHandle;
+
public FileMergingSnapshotManagerBase(
String id, long maxFileSize, PhysicalFilePool.Type filePoolType,
Executor ioExecutor) {
this.id = id;
@@ -152,6 +167,9 @@ public abstract class FileMergingSnapshotManagerBase
implements FileMergingSnaps
Path managedExclusivePath = new Path(taskOwnedStateDir, id);
createManagedDirectory(managedExclusivePath);
this.managedExclusiveStateDir = managedExclusivePath;
+ this.managedExclusiveStateDirHandle =
+ DirectoryStreamStateHandle.forPathWithZeroSize(
+ new File(managedExclusivePath.getPath()).toPath());
this.writeBufferSize = writeBufferSize;
}
@@ -162,6 +180,10 @@ public abstract class FileMergingSnapshotManagerBase
implements FileMergingSnaps
if (!managedSharedStateDir.containsKey(subtaskKey)) {
createManagedDirectory(managedPath);
managedSharedStateDir.put(subtaskKey, managedPath);
+ managedSharedStateDirHandles.put(
+ subtaskKey,
+ DirectoryStreamStateHandle.forPathWithZeroSize(
+ new File(managedPath.getPath()).toPath()));
}
}
@@ -477,6 +499,16 @@ public abstract class FileMergingSnapshotManagerBase
implements FileMergingSnaps
}
}
+ @Override
+ public DirectoryStreamStateHandle getManagedDirStateHandle(
+ SubtaskKey subtaskKey, CheckpointedStateScope scope) {
+ if (scope.equals(CheckpointedStateScope.SHARED)) {
+ return managedSharedStateDirHandles.get(subtaskKey);
+ } else {
+ return managedExclusiveStateDirHandle;
+ }
+ }
+
static boolean shouldSyncAfterClosingLogicalFile(FileSystem fileSystem) {
// Currently, we do file sync regardless of the file system.
// TODO: Determine whether do file sync more wisely. Add an interface
to FileSystem if
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/DefaultOperatorStateBackendSnapshotStrategy.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/DefaultOperatorStateBackendSnapshotStrategy.java
index d81f7b3a1c0..793c8f3e9b3 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/DefaultOperatorStateBackendSnapshotStrategy.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/DefaultOperatorStateBackendSnapshotStrategy.java
@@ -21,6 +21,9 @@ package org.apache.flink.runtime.state;
import org.apache.flink.core.memory.DataOutputView;
import org.apache.flink.core.memory.DataOutputViewStreamWrapper;
import org.apache.flink.runtime.checkpoint.CheckpointOptions;
+import
org.apache.flink.runtime.state.filemerging.EmptyFileMergingOperatorStreamStateHandle;
+import
org.apache.flink.runtime.state.filemerging.FileMergingOperatorStreamStateHandle;
+import
org.apache.flink.runtime.state.filesystem.FsMergingCheckpointStorageLocation;
import org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot;
import org.apache.flink.util.CollectionUtil;
@@ -121,7 +124,17 @@ class DefaultOperatorStateBackendSnapshotStrategy
if (registeredBroadcastStatesDeepCopies.isEmpty()
&& registeredOperatorStatesDeepCopies.isEmpty()) {
- return snapshotCloseableRegistry -> SnapshotResult.empty();
+ if (streamFactory instanceof FsMergingCheckpointStorageLocation) {
+ FsMergingCheckpointStorageLocation location =
+ (FsMergingCheckpointStorageLocation) streamFactory;
+ return snapshotCloseableRegistry ->
+ SnapshotResult.of(
+
EmptyFileMergingOperatorStreamStateHandle.create(
+ location.getExclusiveStateHandle(),
+ location.getSharedStateHandle()));
+ } else {
+ return snapshotCloseableRegistry -> SnapshotResult.empty();
+ }
}
return (snapshotCloseableRegistry) -> {
@@ -204,7 +217,17 @@ class DefaultOperatorStateBackendSnapshotStrategy
if (snapshotCloseableRegistry.unregisterCloseable(localOut)) {
StreamStateHandle stateHandle = localOut.closeAndGetHandle();
if (stateHandle != null) {
- retValue = new
OperatorStreamStateHandle(writtenStatesMetaData, stateHandle);
+ retValue =
+ streamFactory instanceof
FsMergingCheckpointStorageLocation
+ ? new FileMergingOperatorStreamStateHandle(
+
((FsMergingCheckpointStorageLocation) streamFactory)
+ .getExclusiveStateHandle(),
+
((FsMergingCheckpointStorageLocation) streamFactory)
+ .getSharedStateHandle(),
+ writtenStatesMetaData,
+ stateHandle)
+ : new OperatorStreamStateHandle(
+ writtenStatesMetaData,
stateHandle);
}
return SnapshotResult.of(retValue);
} else {
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/DirectoryStreamStateHandle.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/DirectoryStreamStateHandle.java
new file mode 100644
index 00000000000..dacebae4c10
--- /dev/null
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/DirectoryStreamStateHandle.java
@@ -0,0 +1,90 @@
+/*
+ * 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.state.filemerging;
+
+import org.apache.flink.core.fs.FSDataInputStream;
+import org.apache.flink.runtime.state.DirectoryStateHandle;
+import org.apache.flink.runtime.state.PhysicalStateHandleID;
+import org.apache.flink.runtime.state.SharedStateRegistryKey;
+import org.apache.flink.runtime.state.StreamStateHandle;
+
+import javax.annotation.Nonnull;
+
+import java.nio.file.Path;
+import java.util.Optional;
+
+/** Wrap {@link DirectoryStateHandle} to a {@link StreamStateHandle}. */
+public class DirectoryStreamStateHandle extends DirectoryStateHandle
implements StreamStateHandle {
+
+ private static final long serialVersionUID = 1L;
+
+ public DirectoryStreamStateHandle(@Nonnull Path directory, long
directorySize) {
+ super(directory, directorySize);
+ }
+
+ @Override
+ public FSDataInputStream openInputStream() {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public Optional<byte[]> asBytesIfInMemory() {
+ return Optional.empty();
+ }
+
+ @Override
+ public PhysicalStateHandleID getStreamStateHandleID() {
+ return new PhysicalStateHandleID(getDirectory().toString());
+ }
+
+ public SharedStateRegistryKey createStateRegistryKey() {
+ return new SharedStateRegistryKey(getDirectory().toUri().toString());
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+
+ DirectoryStreamStateHandle that = (DirectoryStreamStateHandle) o;
+
+ return getDirectory().equals(that.getDirectory());
+ }
+
+ @Override
+ public String toString() {
+ return "DirectoryStreamStateHandle{" + "directory=" + getDirectory() +
'}';
+ }
+
+ /**
+ * Return a {@link DirectoryStreamStateHandle} with zero size, which
usually used to be
+ * registered to {@link
org.apache.flink.runtime.state.SharedStateRegistry} to track the life
+ * cycle of the directory, therefore a fake size is provided.
+ *
+ * @param directory the directory.
+ * @return DirectoryStreamStateHandle with zero size.
+ */
+ public static DirectoryStreamStateHandle forPathWithZeroSize(@Nonnull Path
directory) {
+ return new DirectoryStreamStateHandle(directory, 0);
+ }
+}
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/EmptyFileMergingOperatorStreamStateHandle.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/EmptyFileMergingOperatorStreamStateHandle.java
new file mode 100644
index 00000000000..6cbc9555e6d
--- /dev/null
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/EmptyFileMergingOperatorStreamStateHandle.java
@@ -0,0 +1,64 @@
+/*
+ * 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.state.filemerging;
+
+import org.apache.flink.runtime.state.OperatorStateHandle;
+import org.apache.flink.runtime.state.StreamStateHandle;
+
+import java.util.Collections;
+import java.util.Map;
+
+/**
+ * An empty {@link FileMergingOperatorStreamStateHandle} that is only used as
a placeholder to
+ * prevent file merging directory from being deleted.
+ */
+public class EmptyFileMergingOperatorStreamStateHandle
+ extends FileMergingOperatorStreamStateHandle {
+
+ private static final long serialVersionUID = 1L;
+
+ public EmptyFileMergingOperatorStreamStateHandle(
+ DirectoryStreamStateHandle taskOwnedDirHandle,
+ DirectoryStreamStateHandle sharedDirHandle,
+ Map<String, StateMetaInfo> stateNameToPartitionOffsets,
+ StreamStateHandle delegateStateHandle) {
+ super(
+ taskOwnedDirHandle,
+ sharedDirHandle,
+ stateNameToPartitionOffsets,
+ delegateStateHandle);
+ }
+
+ /**
+ * Create an empty {@link EmptyFileMergingOperatorStreamStateHandle}.
+ *
+ * @param taskownedDirHandle the directory where operator state is stored.
+ * @param sharedDirHandle the directory where shared state is stored.
+ */
+ public static EmptyFileMergingOperatorStreamStateHandle create(
+ DirectoryStreamStateHandle taskownedDirHandle,
+ DirectoryStreamStateHandle sharedDirHandle) {
+ final Map<String, OperatorStateHandle.StateMetaInfo>
writtenStatesMetaData =
+ Collections.emptyMap();
+ return new EmptyFileMergingOperatorStreamStateHandle(
+ taskownedDirHandle,
+ sharedDirHandle,
+ writtenStatesMetaData,
+ EmptySegmentFileStateHandle.INSTANCE);
+ }
+}
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/EmptySegmentFileStateHandle.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/EmptySegmentFileStateHandle.java
new file mode 100644
index 00000000000..44b487fd53b
--- /dev/null
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/EmptySegmentFileStateHandle.java
@@ -0,0 +1,46 @@
+/*
+ * 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.state.filemerging;
+
+import org.apache.flink.core.fs.FSDataInputStream;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.runtime.state.CheckpointedStateScope;
+
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+
+/** An empty {@link SegmentFileStateHandle} that is only used as a
placeholder. */
+public class EmptySegmentFileStateHandle extends SegmentFileStateHandle {
+ private static final long serialVersionUID = 1L;
+
+ public static final EmptySegmentFileStateHandle INSTANCE =
+ new EmptySegmentFileStateHandle(
+ new Path("empty"), 0, 0, CheckpointedStateScope.EXCLUSIVE);
+
+ private EmptySegmentFileStateHandle(
+ Path filePath, long startPos, long stateSize,
CheckpointedStateScope scope) {
+ super(filePath, startPos, stateSize, scope);
+ }
+
+ @Override
+ public FSDataInputStream openInputStream() throws IOException {
+ throw new UnsupportedEncodingException(
+ "Cannot open input stream from an
EmptySegmentFileStateHandle.");
+ }
+}
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/FileMergingOperatorStreamStateHandle.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/FileMergingOperatorStreamStateHandle.java
new file mode 100644
index 00000000000..ada378f2d03
--- /dev/null
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/FileMergingOperatorStreamStateHandle.java
@@ -0,0 +1,154 @@
+/*
+ * 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.state.filemerging;
+
+import org.apache.flink.runtime.state.CompositeStateHandle;
+import org.apache.flink.runtime.state.OperatorStreamStateHandle;
+import org.apache.flink.runtime.state.SharedStateRegistry;
+import org.apache.flink.runtime.state.SharedStateRegistryKey;
+import org.apache.flink.runtime.state.StreamStateHandle;
+import org.apache.flink.util.Preconditions;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+import java.util.Objects;
+
+/**
+ * A {@link OperatorStreamStateHandle} that works for file merging checkpoints.
+ *
+ * <p>Operator states are stored in `taskownd/` dir when file merging is
enabled. When an operator
+ * state dir is not referenced by any checkpoint, {@link SharedStateRegistry}
will discard it. The
+ * shared subtask dir of fire merging is also tracked by {@link
+ * FileMergingOperatorStreamStateHandle}.
+ *
+ * <p>The shared subtask dir of file merging is created when task
initialization, which will be
+ * discarded when no checkpoint refer to it.
+ */
+public class FileMergingOperatorStreamStateHandle extends
OperatorStreamStateHandle
+ implements CompositeStateHandle {
+
+ private static final long serialVersionUID = 1L;
+ private static final Logger LOG =
+
LoggerFactory.getLogger(FileMergingOperatorStreamStateHandle.class);
+
+ /** The directory handle of file merging under 'taskowed/', one for each
job. */
+ private final DirectoryStreamStateHandle taskOwnedDirHandle;
+
+ /**
+ * The directory handle of file merging under 'shared/', one for each
subtask.
+ *
+ * @see
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager the
layout of
+ * file merging checkpoint directory.
+ */
+ private final DirectoryStreamStateHandle sharedDirHandle;
+
+ private transient SharedStateRegistry sharedStateRegistry;
+
+ public FileMergingOperatorStreamStateHandle(
+ DirectoryStreamStateHandle taskOwnedDirHandle,
+ DirectoryStreamStateHandle sharedDirHandle,
+ Map<String, StateMetaInfo> stateNameToPartitionOffsets,
+ StreamStateHandle delegateStateHandle) {
+ super(stateNameToPartitionOffsets, delegateStateHandle);
+ this.taskOwnedDirHandle = taskOwnedDirHandle;
+ this.sharedDirHandle = sharedDirHandle;
+ }
+
+ @Override
+ public void registerSharedStates(SharedStateRegistry stateRegistry, long
checkpointId) {
+ Preconditions.checkState(
+ sharedStateRegistry != stateRegistry,
+ "The state handle has already registered its shared states to
the given registry.");
+
+ sharedStateRegistry = Preconditions.checkNotNull(stateRegistry);
+
+ LOG.trace(
+ "Registering FileMergingOperatorStreamStateHandle for
checkpoint {} from backend.",
+ checkpointId);
+ stateRegistry.registerReference(
+ new SharedStateRegistryKey(
+
getDelegateStateHandle().getStreamStateHandleID().getKeyString()),
+ getDelegateStateHandle(),
+ checkpointId);
+
+ stateRegistry.registerReference(
+ taskOwnedDirHandle.createStateRegistryKey(),
taskOwnedDirHandle, checkpointId);
+ stateRegistry.registerReference(
+ sharedDirHandle.createStateRegistryKey(), sharedDirHandle,
checkpointId);
+ }
+
+ @Override
+ public void discardState() throws Exception {
+ SharedStateRegistry registry = this.sharedStateRegistry;
+ final boolean isRegistered = (registry != null);
+
+ LOG.trace(
+ "Discarding FileMergingOperatorStreamStateHandle (registered =
{}) from backend.",
+ isRegistered);
+
+ try {
+ getDelegateStateHandle().discardState();
+ } catch (Exception e) {
+ LOG.warn("Could not properly discard directory state handle.", e);
+ }
+ }
+
+ @Override
+ public long getCheckpointedSize() {
+ return getDelegateStateHandle().getStateSize();
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+
+ FileMergingOperatorStreamStateHandle that =
(FileMergingOperatorStreamStateHandle) o;
+
+ return super.equals(that)
+ && taskOwnedDirHandle.equals(that.taskOwnedDirHandle)
+ && sharedDirHandle.equals(that.sharedDirHandle);
+ }
+
+ @Override
+ public int hashCode() {
+ int result = super.hashCode();
+ result = 31 * result + Objects.hashCode(taskOwnedDirHandle);
+ result = 31 * result + Objects.hashCode(sharedDirHandle);
+ return result;
+ }
+
+ @Override
+ public String toString() {
+ return "FileMergingOperatorStreamStateHandle{"
+ + super.toString()
+ + ", taskOwnedDirHandle="
+ + taskOwnedDirHandle
+ + ", sharedDirHandle="
+ + sharedDirHandle
+ + '}';
+ }
+}
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/SegmentFileStateHandle.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/SegmentFileStateHandle.java
similarity index 96%
rename from
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/SegmentFileStateHandle.java
rename to
flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/SegmentFileStateHandle.java
index 0dce9304f78..2a3aa2f49fd 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/filemerging/SegmentFileStateHandle.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filemerging/SegmentFileStateHandle.java
@@ -15,11 +15,12 @@
* limitations under the License.
*/
-package org.apache.flink.runtime.checkpoint.filemerging;
+package org.apache.flink.runtime.state.filemerging;
import org.apache.flink.core.fs.FSDataInputStream;
import org.apache.flink.core.fs.FileSystem;
import org.apache.flink.core.fs.Path;
+import org.apache.flink.runtime.checkpoint.filemerging.LogicalFile;
import org.apache.flink.runtime.state.CheckpointedStateScope;
import org.apache.flink.runtime.state.PhysicalStateHandleID;
import org.apache.flink.runtime.state.StreamStateHandle;
@@ -138,7 +139,7 @@ public class SegmentFileStateHandle implements
StreamStateHandle {
SegmentFileStateHandle that = (SegmentFileStateHandle) o;
- return super.equals(that)
+ return filePath.equals(that.filePath)
&& startPos == that.startPos
&& stateSize == that.stateSize
&& scope.equals(that.scope);
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FileMergingCheckpointStateOutputStream.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FileMergingCheckpointStateOutputStream.java
index b367d1724a9..688fad8c2ed 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FileMergingCheckpointStateOutputStream.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FileMergingCheckpointStateOutputStream.java
@@ -22,8 +22,8 @@ import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.core.fs.FSDataOutputStream;
import org.apache.flink.core.fs.Path;
import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager;
-import org.apache.flink.runtime.checkpoint.filemerging.SegmentFileStateHandle;
import org.apache.flink.runtime.state.CheckpointStateOutputStream;
+import org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FsMergingCheckpointStorageLocation.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FsMergingCheckpointStorageLocation.java
index d485a3dfdfe..f367094bb8b 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FsMergingCheckpointStorageLocation.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FsMergingCheckpointStorageLocation.java
@@ -25,6 +25,7 @@ import
org.apache.flink.runtime.state.CheckpointStorageLocationReference;
import org.apache.flink.runtime.state.CheckpointStreamFactory;
import org.apache.flink.runtime.state.CheckpointedStateScope;
import org.apache.flink.runtime.state.StreamStateHandle;
+import org.apache.flink.runtime.state.filemerging.DirectoryStreamStateHandle;
import java.io.IOException;
import java.util.List;
@@ -84,6 +85,16 @@ public class FsMergingCheckpointStorageLocation extends
FsCheckpointStorageLocat
return backwardsConvertor.get();
}
+ public DirectoryStreamStateHandle getExclusiveStateHandle() {
+ return fileMergingSnapshotManager.getManagedDirStateHandle(
+ subtaskKey, CheckpointedStateScope.EXCLUSIVE);
+ }
+
+ public DirectoryStreamStateHandle getSharedStateHandle() {
+ return fileMergingSnapshotManager.getManagedDirStateHandle(
+ subtaskKey, CheckpointedStateScope.SHARED);
+ }
+
@Override
public boolean canFastDuplicate(StreamStateHandle stateHandle,
CheckpointedStateScope scope)
throws IOException {
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/AcrossCheckpointFileMergingSnapshotManagerTest.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/AcrossCheckpointFileMergingSnapshotManagerTest.java
index 475c13b5445..cc6c53793df 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/AcrossCheckpointFileMergingSnapshotManagerTest.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/AcrossCheckpointFileMergingSnapshotManagerTest.java
@@ -19,6 +19,7 @@ package org.apache.flink.runtime.checkpoint.filemerging;
import org.apache.flink.core.fs.CloseableRegistry;
import org.apache.flink.runtime.state.CheckpointedStateScope;
+import org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle;
import
org.apache.flink.runtime.state.filesystem.FileMergingCheckpointStateOutputStream;
import org.junit.jupiter.api.Test;
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManagerTestBase.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManagerTestBase.java
index d6553060e2e..3147e668ef1 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManagerTestBase.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/FileMergingSnapshotManagerTestBase.java
@@ -26,6 +26,7 @@ import org.apache.flink.core.fs.local.LocalFileSystem;
import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager.SubtaskKey;
import org.apache.flink.runtime.jobgraph.OperatorID;
import org.apache.flink.runtime.state.CheckpointedStateScope;
+import org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle;
import
org.apache.flink.runtime.state.filesystem.AbstractFsCheckpointStorageAccess;
import
org.apache.flink.runtime.state.filesystem.FileMergingCheckpointStateOutputStream;
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/WithinCheckpointFileMergingSnapshotManagerTest.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/WithinCheckpointFileMergingSnapshotManagerTest.java
index 4128e5e7cd3..340bb917d41 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/WithinCheckpointFileMergingSnapshotManagerTest.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/filemerging/WithinCheckpointFileMergingSnapshotManagerTest.java
@@ -19,6 +19,7 @@ package org.apache.flink.runtime.checkpoint.filemerging;
import org.apache.flink.core.fs.CloseableRegistry;
import org.apache.flink.runtime.state.CheckpointedStateScope;
+import org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle;
import
org.apache.flink.runtime.state.filesystem.FileMergingCheckpointStateOutputStream;
import org.junit.jupiter.api.Test;
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/state/OperatorStateBackendTest.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/state/OperatorStateBackendTest.java
index 7f70163ea29..2122303545b 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/state/OperatorStateBackendTest.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/state/OperatorStateBackendTest.java
@@ -30,12 +30,21 @@ import
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot;
import org.apache.flink.api.common.typeutils.base.IntSerializer;
import org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer;
import org.apache.flink.core.fs.CloseableRegistry;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.core.fs.local.LocalFileSystem;
import org.apache.flink.core.memory.DataInputView;
import org.apache.flink.core.memory.DataOutputView;
import org.apache.flink.core.testutils.OneShotLatch;
import org.apache.flink.runtime.checkpoint.CheckpointOptions;
import org.apache.flink.runtime.checkpoint.StateObjectCollection;
+import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager;
+import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager.SubtaskKey;
+import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManagerBuilder;
+import org.apache.flink.runtime.checkpoint.filemerging.FileMergingType;
import org.apache.flink.runtime.execution.Environment;
+import
org.apache.flink.runtime.state.filemerging.FileMergingOperatorStreamStateHandle;
+import
org.apache.flink.runtime.state.filesystem.AbstractFsCheckpointStorageAccess;
+import
org.apache.flink.runtime.state.filesystem.FsMergingCheckpointStorageLocation;
import org.apache.flink.runtime.state.memory.MemCheckpointStreamFactory;
import org.apache.flink.runtime.state.memory.MemoryStateBackend;
import org.apache.flink.runtime.util.BlockerCheckpointStreamFactory;
@@ -47,6 +56,7 @@ import org.apache.flink.util.concurrent.FutureUtils;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;
+import org.junit.jupiter.api.io.TempDir;
import java.io.File;
import java.io.IOException;
@@ -64,6 +74,8 @@ import java.util.concurrent.RunnableFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
+import static org.apache.flink.core.fs.Path.fromLocalFile;
+import static org.apache.flink.core.fs.local.LocalFileSystem.getSharedInstance;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.mockito.Mockito.mock;
@@ -418,6 +430,62 @@ class OperatorStateBackendTest {
assertThat(stateHandle).isNull();
}
+ @Test
+ void testFileMergingSnapshotEmpty(@TempDir File tmpFolder) throws
Exception {
+ final AbstractStateBackend abstractStateBackend = new
MemoryStateBackend(4096);
+ CloseableRegistry cancelStreamRegistry = new CloseableRegistry();
+
+ Environment env = createMockEnvironment();
+ final OperatorStateBackend operatorStateBackend =
+ abstractStateBackend.createOperatorStateBackend(
+ new OperatorStateBackendParametersImpl(
+ env, "testOperator", emptyStateHandles,
cancelStreamRegistry));
+
+ Path checkpointBaseDir = new Path(tmpFolder.toString());
+ Path sharedStateDir =
+ new Path(
+ checkpointBaseDir,
+
AbstractFsCheckpointStorageAccess.CHECKPOINT_SHARED_STATE_DIR);
+ Path taskOwnedStateDir =
+ new Path(
+ checkpointBaseDir,
+
AbstractFsCheckpointStorageAccess.CHECKPOINT_TASK_OWNED_STATE_DIR);
+
+ final FileMergingSnapshotManager.SubtaskKey subtaskKey =
+ new FileMergingSnapshotManager.SubtaskKey("opId", 1, 1);
+ LocalFileSystem fs = getSharedInstance();
+ CheckpointStorageLocationReference cslReference =
+ AbstractFsCheckpointStorageAccess.encodePathAsReference(
+ fromLocalFile(fs.pathToFile(checkpointBaseDir)));
+ FileMergingSnapshotManager snapshotManager =
+ createFileMergingSnapshotManager(
+ checkpointBaseDir, sharedStateDir, taskOwnedStateDir,
subtaskKey);
+ CheckpointStreamFactory streamFactory =
+ new FsMergingCheckpointStorageLocation(
+ subtaskKey,
+ fs,
+ checkpointBaseDir,
+ sharedStateDir,
+ taskOwnedStateDir,
+ cslReference,
+ 1024,
+ 1024,
+ snapshotManager,
+ 0);
+
+ RunnableFuture<SnapshotResult<OperatorStateHandle>> snapshot =
+ operatorStateBackend.snapshot(
+ 0L,
+ 0L,
+ streamFactory,
+ CheckpointOptions.forCheckpointWithDefaultLocation());
+
+ SnapshotResult<OperatorStateHandle> snapshotResult =
+ FutureUtils.runIfNotDoneAndGet(snapshot);
+ OperatorStateHandle stateHandle =
snapshotResult.getJobManagerOwnedSnapshot();
+
assertThat(stateHandle).isInstanceOf(FileMergingOperatorStreamStateHandle.class);
+ }
+
@Test
void testSnapshotBroadcastStateWithEmptyOperatorState() throws Exception {
final AbstractStateBackend abstractStateBackend = new
MemoryStateBackend(4096);
@@ -1047,4 +1115,21 @@ class OperatorStateBackendTest {
new OperatorStateBackendParametersImpl(
env, "testOperator", toRestore, new
CloseableRegistry()));
}
+
+ private FileMergingSnapshotManager createFileMergingSnapshotManager(
+ Path checkpointBaseDir,
+ Path sharedStateDir,
+ Path taskOwnedStateDir,
+ SubtaskKey subtaskKey) {
+ FileMergingSnapshotManager mgr =
+ new FileMergingSnapshotManagerBuilder(
+ "test-1",
FileMergingType.MERGE_WITHIN_CHECKPOINT)
+ .build();
+
+ mgr.initFileSystem(
+ getSharedInstance(), checkpointBaseDir, sharedStateDir,
taskOwnedStateDir, 1024);
+
+ mgr.registerSubtaskForSharedStates(subtaskKey);
+ return mgr;
+ }
}
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/state/SharedStateRegistryTest.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/state/SharedStateRegistryTest.java
index 38553a29e9e..a26830c18be 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/state/SharedStateRegistryTest.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/state/SharedStateRegistryTest.java
@@ -22,23 +22,34 @@ import org.apache.flink.api.common.JobID;
import org.apache.flink.core.execution.RestoreMode;
import org.apache.flink.core.execution.SavepointFormatType;
import org.apache.flink.core.fs.FSDataInputStream;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.core.fs.local.LocalFileSystem;
import org.apache.flink.runtime.checkpoint.CheckpointProperties;
import org.apache.flink.runtime.checkpoint.CompletedCheckpoint;
import org.apache.flink.runtime.checkpoint.OperatorState;
import org.apache.flink.runtime.checkpoint.OperatorSubtaskState;
+import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager;
+import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManagerBuilder;
+import org.apache.flink.runtime.checkpoint.filemerging.FileMergingType;
import org.apache.flink.runtime.jobgraph.OperatorID;
import
org.apache.flink.runtime.state.changelog.ChangelogStateBackendHandle.ChangelogStateBackendHandleImpl;
+import
org.apache.flink.runtime.state.filemerging.EmptyFileMergingOperatorStreamStateHandle;
+import
org.apache.flink.runtime.state.filemerging.FileMergingOperatorStreamStateHandle;
+import
org.apache.flink.runtime.state.filesystem.AbstractFsCheckpointStorageAccess;
import org.apache.flink.runtime.state.memory.ByteStreamStateHandle;
import
org.apache.flink.runtime.state.testutils.TestCompletedCheckpointStorageLocation;
import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.Optional;
import java.util.UUID;
+import static org.apache.flink.core.fs.local.LocalFileSystem.getSharedInstance;
import static
org.apache.flink.runtime.checkpoint.CheckpointRetentionPolicy.NEVER_RETAIN_AFTER_TERMINATION;
import static
org.apache.flink.runtime.checkpoint.CheckpointRetentionPolicy.RETAIN_ON_CANCELLATION;
import static
org.apache.flink.runtime.state.ChangelogTestUtils.ChangelogStateHandleWrapper;
@@ -255,6 +266,81 @@ class SharedStateRegistryTest {
.containsExactly(1L);
}
+ @Test
+ void testFireMergingOperatorStateRegister(@TempDir File tmpFolder) throws
IOException {
+ SharedStateRegistry sharedStateRegistry = new
SharedStateRegistryImpl();
+
+ Path checkpointBaseDir = new Path(tmpFolder.toString());
+ Path sharedStateDir =
+ new Path(
+ checkpointBaseDir,
+
AbstractFsCheckpointStorageAccess.CHECKPOINT_SHARED_STATE_DIR);
+ Path taskOwnedStateDir =
+ new Path(
+ checkpointBaseDir,
+
AbstractFsCheckpointStorageAccess.CHECKPOINT_TASK_OWNED_STATE_DIR);
+ final FileMergingSnapshotManager.SubtaskKey subtaskKey =
+ new FileMergingSnapshotManager.SubtaskKey("opId", 1, 2);
+ FileMergingSnapshotManager snapshotManager =
+ createFileMergingSnapshotManager(
+ checkpointBaseDir, sharedStateDir, taskOwnedStateDir);
+ snapshotManager.registerSubtaskForSharedStates(subtaskKey);
+ FileMergingOperatorStreamStateHandle handle1 =
+ EmptyFileMergingOperatorStreamStateHandle.create(
+ snapshotManager.getManagedDirStateHandle(
+ subtaskKey, CheckpointedStateScope.EXCLUSIVE),
+ snapshotManager.getManagedDirStateHandle(
+ subtaskKey, CheckpointedStateScope.SHARED));
+
+ handle1.registerSharedStates(sharedStateRegistry, 1);
+ LocalFileSystem fs = getSharedInstance();
+ assertThat(
+ fs.exists(
+ snapshotManager.getManagedDir(
+ subtaskKey,
CheckpointedStateScope.EXCLUSIVE)))
+ .isTrue();
+ assertThat(
+ fs.exists(
+ snapshotManager.getManagedDir(
+ subtaskKey,
CheckpointedStateScope.SHARED)))
+ .isTrue();
+ sharedStateRegistry.checkpointCompleted(1);
+ sharedStateRegistry.unregisterUnusedState(1);
+ assertThat(
+ fs.exists(
+ snapshotManager.getManagedDir(
+ subtaskKey,
CheckpointedStateScope.EXCLUSIVE)))
+ .isTrue();
+ assertThat(
+ fs.exists(
+ snapshotManager.getManagedDir(
+ subtaskKey,
CheckpointedStateScope.SHARED)))
+ .isTrue();
+ sharedStateRegistry.unregisterUnusedState(2);
+ assertThat(
+ fs.exists(
+ snapshotManager.getManagedDir(
+ subtaskKey,
CheckpointedStateScope.EXCLUSIVE)))
+ .isFalse();
+ assertThat(
+ fs.exists(
+ snapshotManager.getManagedDir(
+ subtaskKey,
CheckpointedStateScope.SHARED)))
+ .isFalse();
+ }
+
+ private FileMergingSnapshotManager createFileMergingSnapshotManager(
+ Path checkpointBaseDir, Path sharedStateDir, Path
taskOwnedStateDir) {
+ FileMergingSnapshotManager mgr =
+ new FileMergingSnapshotManagerBuilder(
+ "test-1",
FileMergingType.MERGE_WITHIN_CHECKPOINT)
+ .build();
+ mgr.initFileSystem(
+ getSharedInstance(), checkpointBaseDir, sharedStateDir,
taskOwnedStateDir, 1024);
+
+ return mgr;
+ }
+
private void registerInitialCheckpoint(
SharedStateRegistry sharedStateRegistry,
String stateId,
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FileMergingCheckpointStateOutputStreamTest.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FileMergingCheckpointStateOutputStreamTest.java
index 837bbb1efbb..fba8653bdcd 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FileMergingCheckpointStateOutputStreamTest.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FileMergingCheckpointStateOutputStreamTest.java
@@ -25,9 +25,9 @@ import org.apache.flink.core.fs.FileSystem;
import org.apache.flink.core.fs.OutputStreamAndPath;
import org.apache.flink.core.fs.Path;
import org.apache.flink.runtime.checkpoint.filemerging.PhysicalFile;
-import org.apache.flink.runtime.checkpoint.filemerging.SegmentFileStateHandle;
import org.apache.flink.runtime.state.CheckpointStateOutputStream;
import org.apache.flink.runtime.state.StreamStateHandle;
+import org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle;
import org.apache.flink.util.Preconditions;
import org.junit.Before;
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FsMergingCheckpointStorageLocationTest.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FsMergingCheckpointStorageLocationTest.java
index d7796cf7f4f..1eb0be9e2ab 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FsMergingCheckpointStorageLocationTest.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FsMergingCheckpointStorageLocationTest.java
@@ -25,9 +25,9 @@ import org.apache.flink.core.fs.local.LocalFileSystem;
import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager;
import
org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManagerBuilder;
import org.apache.flink.runtime.checkpoint.filemerging.FileMergingType;
-import org.apache.flink.runtime.checkpoint.filemerging.SegmentFileStateHandle;
import org.apache.flink.runtime.state.CheckpointStorageLocationReference;
import org.apache.flink.runtime.state.CheckpointedStateScope;
+import org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle;
import org.junit.Before;
import org.junit.Rule;
