[improve](restore) Compress restore job to reduce editlog size

apache · Oct 24, 2024 · cb3f14a · cb3f14a
1 parent 82e5fd7
commit cb3f14a
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Showing 3 changed files with 58 additions and 2 deletions.
diff --git a/fe/fe-common/src/main/java/org/apache/doris/common/Config.java b/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
@@ -1482,6 +1482,14 @@ public class Config extends ConfigBase {
     @ConfField(mutable = true, masterOnly = true)
     public static int max_backup_restore_job_num_per_db = 10;
 
+    /**
+     * A internal config, to reduce the restore job size during serialization by compress.
+     *
+     * WARNING: Once this option is enabled and a restore is performed, the FE version cannot be rolled back.
+     */
+    @ConfField(mutable = false)
+    public static boolean restore_job_compressed_serialization = false;
+
     /**
      * Control the max num of tablets per backup job involved.
      */

diff --git a/fe/fe-core/src/main/java/org/apache/doris/backup/AbstractJob.java b/fe/fe-core/src/main/java/org/apache/doris/backup/AbstractJob.java
@@ -40,7 +40,7 @@
 public abstract class AbstractJob implements Writable {
 
     public enum JobType {
-        BACKUP, RESTORE
+        BACKUP, RESTORE, RESTORE_COMPRESSED
     }
 
     protected JobType type;
@@ -160,7 +160,7 @@ public static AbstractJob read(DataInput in) throws IOException {
         JobType type = JobType.valueOf(Text.readString(in));
         if (type == JobType.BACKUP) {
             job = new BackupJob();
-        } else if (type == JobType.RESTORE) {
+        } else if (type == JobType.RESTORE || type == JobType.RESTORE_COMPRESSED) {
             job = new RestoreJob();
         } else {
             throw new IOException("Unknown job type: " + type.name());

diff --git a/fe/fe-core/src/main/java/org/apache/doris/backup/RestoreJob.java b/fe/fe-core/src/main/java/org/apache/doris/backup/RestoreJob.java
@@ -98,15 +98,21 @@
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
 import java.io.DataInput;
+import java.io.DataInputStream;
 import java.io.DataOutput;
+import java.io.DataOutputStream;
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 
 public class RestoreJob extends AbstractJob {
     private static final String PROP_RESERVE_REPLICA = RestoreStmt.PROP_RESERVE_REPLICA;
@@ -2421,8 +2427,30 @@ public static RestoreJob read(DataInput in) throws IOException {
 
     @Override
     public void write(DataOutput out) throws IOException {
+        if (Config.restore_job_compressed_serialization) {
+            type = JobType.RESTORE_COMPRESSED;
+        }
         super.write(out);
+        if (Config.restore_job_compressed_serialization) {
+            type = JobType.RESTORE;
+
+            ByteArrayOutputStream bytesStream = new ByteArrayOutputStream();
+            try (GZIPOutputStream gzipStream = new GZIPOutputStream(bytesStream)) {
+                try (DataOutputStream stream = new DataOutputStream(gzipStream)) {
+                    writeOthers(stream);
+                }
+            }
+            Text text = new Text(bytesStream.toByteArray());
+            if (text.getLength() > (100 << 20)) {
+                LOG.info("restore job serialized size {}", text.getLength());
+            }
+            text.write(out);
+        } else {
+            writeOthers(out);
+        }
+    }
 
+    private void writeOthers(DataOutput out) throws IOException {
         Text.writeString(out, backupTimestamp);
         jobInfo.write(out);
         out.writeBoolean(allowLoad);
@@ -2495,7 +2523,27 @@ public void write(DataOutput out) throws IOException {
     @Override
     public void readFields(DataInput in) throws IOException {
         super.readFields(in);
+        if (type == JobType.RESTORE_COMPRESSED) {
+            type = JobType.RESTORE;
+
+            Text text = new Text();
+            text.readFields(in);
+            if (text.getLength() > (100 << 20)) {
+                LOG.info("read restore job compressed size {}", text.getLength());
+            }
+
+            ByteArrayInputStream bytesStream = new ByteArrayInputStream(text.getBytes());
+            try (GZIPInputStream gzipStream = new GZIPInputStream(bytesStream)) {
+                try (DataInputStream stream = new DataInputStream(gzipStream)) {
+                    readOthers(stream);
+                }
+            }
+        } else {
+            readOthers(in);
+        }
+    }
 
+    private void readOthers(DataInput in) throws IOException {
         backupTimestamp = Text.readString(in);
         jobInfo = BackupJobInfo.read(in);
         allowLoad = in.readBoolean();