Add buffering to LocalSnapshotStore

These improve snapshot save/load load times by around 15-20%
on my environment.

Change-Id: I67236f7e97f519993031d462c947588004857c33
Signed-off-by: Tomas Cere <tomas.cere@pantheon.tech>

diff --git a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/persistence/LocalSnapshotStore.java b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/persistence/LocalSnapshotStore.java
index 62b0cf5bfd061867da72cd4084eb8eec86d72821..e08fec2e899e6759b64c0d08c735ac8bd52f8a09 100644 (file)
--- a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/persistence/LocalSnapshotStore.java
+++ b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/persistence/LocalSnapshotStore.java
@@ -20,6 +20,7 @@ import com.google.common.annotations.VisibleForTesting;
 import com.google.common.io.ByteStreams;
 import com.typesafe.config.Config;
 import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
@@ -137,7 +138,7 @@ public class LocalSnapshotStore extends SnapshotStore {
     private Object deserialize(final File file) throws IOException {
         return JavaSerializer.currentSystem().withValue((ExtendedActorSystem) context().system(),
             (Callable<Object>) () -> {
-                try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(file))) {
+                try (ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(new FileInputStream(file)))) {
                     return in.readObject();
                 } catch (ClassNotFoundException e) {
                     throw new IOException("Error loading snapshot file " + file, e);
@@ -175,7 +176,7 @@ public class LocalSnapshotStore extends SnapshotStore {
 
         LOG.debug("Saving to temp file: {}", temp);
 
-        try (ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(temp))) {
+        try (ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(temp)))) {
             out.writeObject(snapshot);
         } catch (IOException e) {
             LOG.error("Error saving snapshot file {}. Deleting file..", temp, e);