sashapolo commented on code in PR #5593:
URL: https://github.com/apache/ignite-3/pull/5593#discussion_r2035569060
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modules/partition-replicator/src/main/java/org/apache/ignite/internal/partition/replicator/raft/snapshot/PartitionSnapshotStorage.java:
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@@ -17,159 +17,103 @@
package org.apache.ignite.internal.partition.replicator.raft.snapshot;
+import static it.unimi.dsi.fastutil.ints.Int2ObjectMaps.synchronize;
+
import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
import java.util.concurrent.Executor;
-import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.ignite.internal.catalog.CatalogService;
import org.apache.ignite.internal.failure.FailureProcessor;
+import org.apache.ignite.internal.network.MessagingService;
import org.apache.ignite.internal.network.TopologyService;
import
org.apache.ignite.internal.partition.replicator.raft.snapshot.incoming.IncomingSnapshotCopier;
import
org.apache.ignite.internal.partition.replicator.raft.snapshot.outgoing.OutgoingSnapshotReader;
import
org.apache.ignite.internal.partition.replicator.raft.snapshot.outgoing.OutgoingSnapshotsManager;
-import
org.apache.ignite.internal.partition.replicator.raft.snapshot.startup.StartupPartitionSnapshotReader;
+import org.apache.ignite.internal.raft.RaftGroupConfiguration;
import org.apache.ignite.internal.storage.MvPartitionStorage;
+import org.apache.ignite.raft.jraft.RaftMessagesFactory;
import org.apache.ignite.raft.jraft.entity.RaftOutter.SnapshotMeta;
-import org.apache.ignite.raft.jraft.option.RaftOptions;
-import org.apache.ignite.raft.jraft.option.SnapshotCopierOptions;
-import org.apache.ignite.raft.jraft.storage.SnapshotStorage;
-import org.apache.ignite.raft.jraft.storage.SnapshotThrottle;
import org.apache.ignite.raft.jraft.storage.snapshot.SnapshotCopier;
import org.apache.ignite.raft.jraft.storage.snapshot.SnapshotReader;
import org.apache.ignite.raft.jraft.storage.snapshot.SnapshotWriter;
import org.jetbrains.annotations.Nullable;
/**
- * Snapshot storage for {@link MvPartitionStorage}.
+ * Snapshot storage for {@link MvPartitionStorage}. Utilizes the fact that
every partition already stores its latest applied index
+ * and thus can itself be used as its own snapshot.
+ *
+ * <p>Uses {@link MvPartitionStorage#lastAppliedIndex()} and configuration,
passed into constructor, to create a {@link SnapshotMeta} object
+ * in {@link SnapshotReader#load()}.
*
- * @see PartitionSnapshotStorageFactory
+ * <p>Snapshot writer doesn't allow explicit save of any actual file. {@link
SnapshotWriter#saveMeta(SnapshotMeta)} simply returns
+ * {@code true}, and {@link SnapshotWriter#addFile(String)} throws an
exception.
*/
-public class PartitionSnapshotStorage implements SnapshotStorage {
+public class PartitionSnapshotStorage {
Review Comment:
Why not? It still manages storages wrt snapshots
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