Use packed repeated fields in protobuf messages

4 files changed, 99 insertions, 79 deletions

diff --git a/sonar-batch-protocol/src/main/gen-java/org/sonar/batch/protocol/output/BatchReport.java b/sonar-batch-protocol/src/main/gen-java/org/sonar/batch/protocol/output/BatchReport.java
index 23c3a57d828..8026f5b5f82 100644
--- a/sonar-batch-protocol/src/main/gen-java/org/sonar/batch/protocol/output/BatchReport.java
+++ b/sonar-batch-protocol/src/main/gen-java/org/sonar/batch/protocol/output/BatchReport.java
@@ -714,15 +714,15 @@ public final class BatchReport {
         getLanguageBytes();
 
     /**
-     * <code>repeated int32 child_refs = 7;</code>
+     * <code>repeated int32 child_refs = 7 [packed = true];</code>
      */
     java.util.List<java.lang.Integer> getChildRefsList();
     /**
-     * <code>repeated int32 child_refs = 7;</code>
+     * <code>repeated int32 child_refs = 7 [packed = true];</code>
      */
     int getChildRefsCount();
     /**
-     * <code>repeated int32 child_refs = 7;</code>
+     * <code>repeated int32 child_refs = 7 [packed = true];</code>
      */
     int getChildRefs(int index);
 
@@ -1097,24 +1097,25 @@ public final class BatchReport {
     public static final int CHILD_REFS_FIELD_NUMBER = 7;
     private java.util.List<java.lang.Integer> childRefs_;
     /**
-     * <code>repeated int32 child_refs = 7;</code>
+     * <code>repeated int32 child_refs = 7 [packed = true];</code>
      */
     public java.util.List<java.lang.Integer>
         getChildRefsList() {
       return childRefs_;
     }
     /**
-     * <code>repeated int32 child_refs = 7;</code>
+     * <code>repeated int32 child_refs = 7 [packed = true];</code>
      */
     public int getChildRefsCount() {
       return childRefs_.size();
     }
     /**
-     * <code>repeated int32 child_refs = 7;</code>
+     * <code>repeated int32 child_refs = 7 [packed = true];</code>
      */
     public int getChildRefs(int index) {
       return childRefs_.get(index);
     }
+    private int childRefsMemoizedSerializedSize = -1;
 
     public static final int SNAPSHOT_ID_FIELD_NUMBER = 8;
     private int snapshotId_;
@@ -1223,8 +1224,12 @@ public final class BatchReport {
       if (((bitField0_ & 0x00000020) == 0x00000020)) {
         output.writeBytes(6, getLanguageBytes());
       }
+      if (getChildRefsList().size() > 0) {
+        output.writeRawVarint32(58);
+        output.writeRawVarint32(childRefsMemoizedSerializedSize);
+      }
       for (int i = 0; i < childRefs_.size(); i++) {
-        output.writeInt32(7, childRefs_.get(i));
+        output.writeInt32NoTag(childRefs_.get(i));
       }
       if (((bitField0_ & 0x00000040) == 0x00000040)) {
         output.writeInt32(8, snapshotId_);
@@ -1272,7 +1277,12 @@ public final class BatchReport {
             .computeInt32SizeNoTag(childRefs_.get(i));
         }
         size += dataSize;
-        size += 1 * getChildRefsList().size();
+        if (!getChildRefsList().isEmpty()) {
+          size += 1;
+          size += com.google.protobuf.CodedOutputStream
+              .computeInt32SizeNoTag(dataSize);
+        }
+        childRefsMemoizedSerializedSize = dataSize;
       }
       if (((bitField0_ & 0x00000040) == 0x00000040)) {
         size += com.google.protobuf.CodedOutputStream
@@ -1902,26 +1912,26 @@ public final class BatchReport {
          }
       }
       /**
-       * <code>repeated int32 child_refs = 7;</code>
+       * <code>repeated int32 child_refs = 7 [packed = true];</code>
        */
       public java.util.List<java.lang.Integer>
           getChildRefsList() {
         return java.util.Collections.unmodifiableList(childRefs_);
       }
       /**
-       * <code>repeated int32 child_refs = 7;</code>
+       * <code>repeated int32 child_refs = 7 [packed = true];</code>
        */
       public int getChildRefsCount() {
         return childRefs_.size();
       }
       /**
-       * <code>repeated int32 child_refs = 7;</code>
+       * <code>repeated int32 child_refs = 7 [packed = true];</code>
        */
       public int getChildRefs(int index) {
         return childRefs_.get(index);
       }
       /**
-       * <code>repeated int32 child_refs = 7;</code>
+       * <code>repeated int32 child_refs = 7 [packed = true];</code>
        */
       public Builder setChildRefs(
           int index, int value) {
@@ -1931,7 +1941,7 @@ public final class BatchReport {
         return this;
       }
       /**
-       * <code>repeated int32 child_refs = 7;</code>
+       * <code>repeated int32 child_refs = 7 [packed = true];</code>
        */
       public Builder addChildRefs(int value) {
         ensureChildRefsIsMutable();
@@ -1940,7 +1950,7 @@ public final class BatchReport {
         return this;
       }
       /**
-       * <code>repeated int32 child_refs = 7;</code>
+       * <code>repeated int32 child_refs = 7 [packed = true];</code>
        */
       public Builder addAllChildRefs(
           java.lang.Iterable<? extends java.lang.Integer> values) {
@@ -1951,7 +1961,7 @@ public final class BatchReport {
         return this;
       }
       /**
-       * <code>repeated int32 child_refs = 7;</code>
+       * <code>repeated int32 child_refs = 7 [packed = true];</code>
        */
       public Builder clearChildRefs() {
         childRefs_ = java.util.Collections.emptyList();
@@ -6404,27 +6414,27 @@ public final class BatchReport {
       "\n\022batch_report.proto\032\017constants.proto\"R\n" +
       "\010Metadata\022\025\n\ranalysis_date\030\001 \001(\003\022\023\n\013proj" +
       "ect_key\030\002 \001(\t\022\032\n\022root_component_ref\030\003 \001(" +
-      "\005\"\254\001\n\tComponent\022\013\n\003ref\030\001 \001(\005\022\014\n\004path\030\002 \001" +
+      "\005\"\260\001\n\tComponent\022\013\n\003ref\030\001 \001(\005\022\014\n\004path\030\002 \001" +
       "(\t\022\014\n\004name\030\003 \001(\t\022\034\n\004type\030\004 \001(\0162\016.Compone" +
       "ntType\022\017\n\007is_test\030\005 \001(\010\022\020\n\010language\030\006 \001(" +
-      "\t\022\022\n\nchild_refs\030\007 \003(\005\022\023\n\013snapshot_id\030\010 \001" +
-      "(\005\022\014\n\004uuid\030\t \001(\t\"\232\004\n\005Issue\022\027\n\017rule_repos" +
-      "itory\030\001 \001(\t\022\020\n\010rule_key\030\002 \001(\t\022\014\n\004line\030\003 " +
-      "\001(\005\022\013\n\003msg\030\004 \001(\t\022\033\n\010severity\030\005 \001(\0162\t.Sev",
-      "erity\022\014\n\004tags\030\006 \003(\t\022\025\n\reffort_to_fix\030\007 \001" +
-      "(\001\022\016\n\006is_new\030\010 \001(\010\022\014\n\004uuid\030\t \001(\t\022\027\n\017debt" +
-      "_in_minutes\030\n \001(\003\022\022\n\nresolution\030\013 \001(\t\022\016\n" +
-      "\006status\030\014 \001(\t\022\020\n\010checksum\030\r \001(\t\022\027\n\017manua" +
-      "l_severity\030\016 \001(\010\022\020\n\010reporter\030\017 \001(\t\022\020\n\010as" +
-      "signee\030\020 \001(\t\022\027\n\017action_plan_key\030\021 \001(\t\022\022\n" +
-      "\nattributes\030\022 \001(\t\022\024\n\014author_login\030\023 \001(\t\022" +
-      "\025\n\rcreation_date\030\024 \001(\003\022\022\n\nclose_date\030\025 \001" +
-      "(\003\022\023\n\013update_date\030\026 \001(\003\022\023\n\013selected_at\030\027" +
-      " \001(\003\022\023\n\013diff_fields\030\030 \001(\t\022\022\n\nis_changed\030",
-      "\031 \001(\010\022\036\n\026must_send_notification\030\032 \001(\010\"5\n" +
-      "\006Issues\022\025\n\rcomponent_ref\030\001 \001(\005\022\024\n\004list\030\002" +
-      " \003(\0132\006.IssueB#\n\037org.sonar.batch.protocol" +
-      ".outputH\001"
+      "\t\022\026\n\nchild_refs\030\007 \003(\005B\002\020\001\022\023\n\013snapshot_id" +
+      "\030\010 \001(\005\022\014\n\004uuid\030\t \001(\t\"\232\004\n\005Issue\022\027\n\017rule_r" +
+      "epository\030\001 \001(\t\022\020\n\010rule_key\030\002 \001(\t\022\014\n\004lin" +
+      "e\030\003 \001(\005\022\013\n\003msg\030\004 \001(\t\022\033\n\010severity\030\005 \001(\0162\t",
+      ".Severity\022\014\n\004tags\030\006 \003(\t\022\025\n\reffort_to_fix" +
+      "\030\007 \001(\001\022\016\n\006is_new\030\010 \001(\010\022\014\n\004uuid\030\t \001(\t\022\027\n\017" +
+      "debt_in_minutes\030\n \001(\003\022\022\n\nresolution\030\013 \001(" +
+      "\t\022\016\n\006status\030\014 \001(\t\022\020\n\010checksum\030\r \001(\t\022\027\n\017m" +
+      "anual_severity\030\016 \001(\010\022\020\n\010reporter\030\017 \001(\t\022\020" +
+      "\n\010assignee\030\020 \001(\t\022\027\n\017action_plan_key\030\021 \001(" +
+      "\t\022\022\n\nattributes\030\022 \001(\t\022\024\n\014author_login\030\023 " +
+      "\001(\t\022\025\n\rcreation_date\030\024 \001(\003\022\022\n\nclose_date" +
+      "\030\025 \001(\003\022\023\n\013update_date\030\026 \001(\003\022\023\n\013selected_" +
+      "at\030\027 \001(\003\022\023\n\013diff_fields\030\030 \001(\t\022\022\n\nis_chan",
+      "ged\030\031 \001(\010\022\036\n\026must_send_notification\030\032 \001(" +
+      "\010\"5\n\006Issues\022\025\n\rcomponent_ref\030\001 \001(\005\022\024\n\004li" +
+      "st\030\002 \003(\0132\006.IssueB#\n\037org.sonar.batch.prot" +
+      "ocol.outputH\001"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
         new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
diff --git a/sonar-batch-protocol/src/main/gen-java/org/sonar/server/source/db/FileSourceDb.java b/sonar-batch-protocol/src/main/gen-java/org/sonar/server/source/db/FileSourceDb.java
index f3f9db893b2..a1b40ec8fbf 100644
--- a/sonar-batch-protocol/src/main/gen-java/org/sonar/server/source/db/FileSourceDb.java
+++ b/sonar-batch-protocol/src/main/gen-java/org/sonar/server/source/db/FileSourceDb.java
@@ -88,7 +88,7 @@ public final class FileSourceDb {
      * <code>optional int32 ut_line_hits = 6;</code>
      *
      * <pre>
-     * unit testing
+     * unit tests
      * </pre>
      */
     boolean hasUtLineHits();
@@ -96,7 +96,7 @@ public final class FileSourceDb {
      * <code>optional int32 ut_line_hits = 6;</code>
      *
      * <pre>
-     * unit testing
+     * unit tests
      * </pre>
      */
     int getUtLineHits();
@@ -123,7 +123,7 @@ public final class FileSourceDb {
      * <code>optional int32 it_line_hits = 9;</code>
      *
      * <pre>
-     * integration testing
+     * integration tests
      * </pre>
      */
     boolean hasItLineHits();
@@ -131,7 +131,7 @@ public final class FileSourceDb {
      * <code>optional int32 it_line_hits = 9;</code>
      *
      * <pre>
-     * integration testing
+     * integration tests
      * </pre>
      */
     int getItLineHits();
@@ -158,7 +158,7 @@ public final class FileSourceDb {
      * <code>optional int32 overall_line_hits = 12;</code>
      *
      * <pre>
-     * overall testing
+     * overall tests
      * </pre>
      */
     boolean hasOverallLineHits();
@@ -166,7 +166,7 @@ public final class FileSourceDb {
      * <code>optional int32 overall_line_hits = 12;</code>
      *
      * <pre>
-     * overall testing
+     * overall tests
      * </pre>
      */
     int getOverallLineHits();
@@ -218,15 +218,15 @@ public final class FileSourceDb {
         getSymbolsBytes();
 
     /**
-     * <code>repeated int32 duplications = 17;</code>
+     * <code>repeated int32 duplications = 17 [packed = true];</code>
      */
     java.util.List<java.lang.Integer> getDuplicationsList();
     /**
-     * <code>repeated int32 duplications = 17;</code>
+     * <code>repeated int32 duplications = 17 [packed = true];</code>
      */
     int getDuplicationsCount();
     /**
-     * <code>repeated int32 duplications = 17;</code>
+     * <code>repeated int32 duplications = 17 [packed = true];</code>
      */
     int getDuplications(int index);
   }
@@ -605,7 +605,7 @@ public final class FileSourceDb {
      * <code>optional int32 ut_line_hits = 6;</code>
      *
      * <pre>
-     * unit testing
+     * unit tests
      * </pre>
      */
     public boolean hasUtLineHits() {
@@ -615,7 +615,7 @@ public final class FileSourceDb {
      * <code>optional int32 ut_line_hits = 6;</code>
      *
      * <pre>
-     * unit testing
+     * unit tests
      * </pre>
      */
     public int getUtLineHits() {
@@ -658,7 +658,7 @@ public final class FileSourceDb {
      * <code>optional int32 it_line_hits = 9;</code>
      *
      * <pre>
-     * integration testing
+     * integration tests
      * </pre>
      */
     public boolean hasItLineHits() {
@@ -668,7 +668,7 @@ public final class FileSourceDb {
      * <code>optional int32 it_line_hits = 9;</code>
      *
      * <pre>
-     * integration testing
+     * integration tests
      * </pre>
      */
     public int getItLineHits() {
@@ -711,7 +711,7 @@ public final class FileSourceDb {
      * <code>optional int32 overall_line_hits = 12;</code>
      *
      * <pre>
-     * overall testing
+     * overall tests
      * </pre>
      */
     public boolean hasOverallLineHits() {
@@ -721,7 +721,7 @@ public final class FileSourceDb {
      * <code>optional int32 overall_line_hits = 12;</code>
      *
      * <pre>
-     * overall testing
+     * overall tests
      * </pre>
      */
     public int getOverallLineHits() {
@@ -845,24 +845,25 @@ public final class FileSourceDb {
     public static final int DUPLICATIONS_FIELD_NUMBER = 17;
     private java.util.List<java.lang.Integer> duplications_;
     /**
-     * <code>repeated int32 duplications = 17;</code>
+     * <code>repeated int32 duplications = 17 [packed = true];</code>
      */
     public java.util.List<java.lang.Integer>
         getDuplicationsList() {
       return duplications_;
     }
     /**
-     * <code>repeated int32 duplications = 17;</code>
+     * <code>repeated int32 duplications = 17 [packed = true];</code>
      */
     public int getDuplicationsCount() {
       return duplications_.size();
     }
     /**
-     * <code>repeated int32 duplications = 17;</code>
+     * <code>repeated int32 duplications = 17 [packed = true];</code>
      */
     public int getDuplications(int index) {
       return duplications_.get(index);
     }
+    private int duplicationsMemoizedSerializedSize = -1;
 
     private void initFields() {
       line_ = 0;
@@ -944,8 +945,12 @@ public final class FileSourceDb {
       if (((bitField0_ & 0x00008000) == 0x00008000)) {
         output.writeBytes(16, getSymbolsBytes());
       }
+      if (getDuplicationsList().size() > 0) {
+        output.writeRawVarint32(138);
+        output.writeRawVarint32(duplicationsMemoizedSerializedSize);
+      }
       for (int i = 0; i < duplications_.size(); i++) {
-        output.writeInt32(17, duplications_.get(i));
+        output.writeInt32NoTag(duplications_.get(i));
       }
       getUnknownFields().writeTo(output);
     }
@@ -1027,7 +1032,12 @@ public final class FileSourceDb {
             .computeInt32SizeNoTag(duplications_.get(i));
         }
         size += dataSize;
-        size += 2 * getDuplicationsList().size();
+        if (!getDuplicationsList().isEmpty()) {
+          size += 2;
+          size += com.google.protobuf.CodedOutputStream
+              .computeInt32SizeNoTag(dataSize);
+        }
+        duplicationsMemoizedSerializedSize = dataSize;
       }
       size += getUnknownFields().getSerializedSize();
       memoizedSerializedSize = size;
@@ -1709,7 +1719,7 @@ public final class FileSourceDb {
        * <code>optional int32 ut_line_hits = 6;</code>
        *
        * <pre>
-       * unit testing
+       * unit tests
        * </pre>
        */
       public boolean hasUtLineHits() {
@@ -1719,7 +1729,7 @@ public final class FileSourceDb {
        * <code>optional int32 ut_line_hits = 6;</code>
        *
        * <pre>
-       * unit testing
+       * unit tests
        * </pre>
        */
       public int getUtLineHits() {
@@ -1729,7 +1739,7 @@ public final class FileSourceDb {
        * <code>optional int32 ut_line_hits = 6;</code>
        *
        * <pre>
-       * unit testing
+       * unit tests
        * </pre>
        */
       public Builder setUtLineHits(int value) {
@@ -1742,7 +1752,7 @@ public final class FileSourceDb {
        * <code>optional int32 ut_line_hits = 6;</code>
        *
        * <pre>
-       * unit testing
+       * unit tests
        * </pre>
        */
       public Builder clearUtLineHits() {
@@ -1821,7 +1831,7 @@ public final class FileSourceDb {
        * <code>optional int32 it_line_hits = 9;</code>
        *
        * <pre>
-       * integration testing
+       * integration tests
        * </pre>
        */
       public boolean hasItLineHits() {
@@ -1831,7 +1841,7 @@ public final class FileSourceDb {
        * <code>optional int32 it_line_hits = 9;</code>
        *
        * <pre>
-       * integration testing
+       * integration tests
        * </pre>
        */
       public int getItLineHits() {
@@ -1841,7 +1851,7 @@ public final class FileSourceDb {
        * <code>optional int32 it_line_hits = 9;</code>
        *
        * <pre>
-       * integration testing
+       * integration tests
        * </pre>
        */
       public Builder setItLineHits(int value) {
@@ -1854,7 +1864,7 @@ public final class FileSourceDb {
        * <code>optional int32 it_line_hits = 9;</code>
        *
        * <pre>
-       * integration testing
+       * integration tests
        * </pre>
        */
       public Builder clearItLineHits() {
@@ -1933,7 +1943,7 @@ public final class FileSourceDb {
        * <code>optional int32 overall_line_hits = 12;</code>
        *
        * <pre>
-       * overall testing
+       * overall tests
        * </pre>
        */
       public boolean hasOverallLineHits() {
@@ -1943,7 +1953,7 @@ public final class FileSourceDb {
        * <code>optional int32 overall_line_hits = 12;</code>
        *
        * <pre>
-       * overall testing
+       * overall tests
        * </pre>
        */
       public int getOverallLineHits() {
@@ -1953,7 +1963,7 @@ public final class FileSourceDb {
        * <code>optional int32 overall_line_hits = 12;</code>
        *
        * <pre>
-       * overall testing
+       * overall tests
        * </pre>
        */
       public Builder setOverallLineHits(int value) {
@@ -1966,7 +1976,7 @@ public final class FileSourceDb {
        * <code>optional int32 overall_line_hits = 12;</code>
        *
        * <pre>
-       * overall testing
+       * overall tests
        * </pre>
        */
       public Builder clearOverallLineHits() {
@@ -2200,26 +2210,26 @@ public final class FileSourceDb {
          }
       }
       /**
-       * <code>repeated int32 duplications = 17;</code>
+       * <code>repeated int32 duplications = 17 [packed = true];</code>
        */
       public java.util.List<java.lang.Integer>
           getDuplicationsList() {
         return java.util.Collections.unmodifiableList(duplications_);
       }
       /**
-       * <code>repeated int32 duplications = 17;</code>
+       * <code>repeated int32 duplications = 17 [packed = true];</code>
        */
       public int getDuplicationsCount() {
         return duplications_.size();
       }
       /**
-       * <code>repeated int32 duplications = 17;</code>
+       * <code>repeated int32 duplications = 17 [packed = true];</code>
        */
       public int getDuplications(int index) {
         return duplications_.get(index);
       }
       /**
-       * <code>repeated int32 duplications = 17;</code>
+       * <code>repeated int32 duplications = 17 [packed = true];</code>
        */
       public Builder setDuplications(
           int index, int value) {
@@ -2229,7 +2239,7 @@ public final class FileSourceDb {
         return this;
       }
       /**
-       * <code>repeated int32 duplications = 17;</code>
+       * <code>repeated int32 duplications = 17 [packed = true];</code>
        */
       public Builder addDuplications(int value) {
         ensureDuplicationsIsMutable();
@@ -2238,7 +2248,7 @@ public final class FileSourceDb {
         return this;
       }
       /**
-       * <code>repeated int32 duplications = 17;</code>
+       * <code>repeated int32 duplications = 17 [packed = true];</code>
        */
       public Builder addAllDuplications(
           java.lang.Iterable<? extends java.lang.Integer> values) {
@@ -2249,7 +2259,7 @@ public final class FileSourceDb {
         return this;
       }
       /**
-       * <code>repeated int32 duplications = 17;</code>
+       * <code>repeated int32 duplications = 17 [packed = true];</code>
        */
       public Builder clearDuplications() {
         duplications_ = java.util.Collections.emptyList();
@@ -2965,7 +2975,7 @@ public final class FileSourceDb {
   static {
     java.lang.String[] descriptorData = {
       "\n\024file_source_db.proto\022\032org.sonar.server" +
-      ".source.db\"\220\003\n\004Line\022\014\n\004line\030\001 \001(\005\022\016\n\006sou" +
+      ".source.db\"\224\003\n\004Line\022\014\n\004line\030\001 \001(\005\022\016\n\006sou" +
       "rce\030\002 \001(\t\022\024\n\014scm_revision\030\003 \001(\t\022\022\n\nscm_a" +
       "uthor\030\004 \001(\t\022\020\n\010scm_date\030\005 \001(\003\022\024\n\014ut_line" +
       "_hits\030\006 \001(\005\022\025\n\rut_conditions\030\007 \001(\005\022\035\n\025ut" +
@@ -2974,9 +2984,9 @@ public final class FileSourceDb {
       "ered_conditions\030\013 \001(\005\022\031\n\021overall_line_hi" +
       "ts\030\014 \001(\005\022\032\n\022overall_conditions\030\r \001(\005\022\"\n\032" +
       "overall_covered_conditions\030\016 \001(\005\022\024\n\014high",
-      "lighting\030\017 \001(\t\022\017\n\007symbols\030\020 \001(\t\022\024\n\014dupli" +
-      "cations\030\021 \003(\005\"7\n\004Data\022/\n\005lines\030\001 \003(\0132 .o" +
-      "rg.sonar.server.source.db.LineB\002H\001"
+      "lighting\030\017 \001(\t\022\017\n\007symbols\030\020 \001(\t\022\030\n\014dupli" +
+      "cations\030\021 \003(\005B\002\020\001\"7\n\004Data\022/\n\005lines\030\001 \003(\013" +
+      "2 .org.sonar.server.source.db.LineB\002H\001"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
         new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
diff --git a/sonar-batch-protocol/src/main/protobuf/batch_report.proto b/sonar-batch-protocol/src/main/protobuf/batch_report.proto
index 0499fc2b3ca..d1acbfe00a3 100644
--- a/sonar-batch-protocol/src/main/protobuf/batch_report.proto
+++ b/sonar-batch-protocol/src/main/protobuf/batch_report.proto
@@ -51,7 +51,7 @@ message Component {
   optional ComponentType type = 4;
   optional bool is_test = 5;
   optional string language = 6;
-  repeated int32 child_refs = 7;
+  repeated int32 child_refs = 7 [packed=true];
 
   // temporary fields during development of computation stack
   optional int32 snapshot_id = 8;
diff --git a/sonar-batch-protocol/src/main/protobuf/file_source_db.proto b/sonar-batch-protocol/src/main/protobuf/file_source_db.proto
index bdb0b877949..cc29e17ccdc 100644
--- a/sonar-batch-protocol/src/main/protobuf/file_source_db.proto
+++ b/sonar-batch-protocol/src/main/protobuf/file_source_db.proto
@@ -64,7 +64,7 @@ message Line {
 
   optional string highlighting = 15;
   optional string symbols = 16;
-  repeated int32 duplications = 17;
+  repeated int32 duplications = 17 [packed=true];
 }
 
 message Data {