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From lewi...@apache.org
Subject [01/12] incubator-htrace git commit: initial span receiver for kudu poc commit
Date Wed, 11 Apr 2018 20:26:51 GMT
Repository: incubator-htrace
Updated Branches:
  refs/heads/master 4508cd5c3 -> a3b503d7d


http://git-wip-us.apache.org/repos/asf/incubator-htrace/blob/6752709e/htrace-kudu/src/main/java/org/apache/htrace/protobuf/generated/SpanProtos.java
----------------------------------------------------------------------
diff --git a/htrace-kudu/src/main/java/org/apache/htrace/protobuf/generated/SpanProtos.java b/htrace-kudu/src/main/java/org/apache/htrace/protobuf/generated/SpanProtos.java
new file mode 100644
index 0000000..98b8adb
--- /dev/null
+++ b/htrace-kudu/src/main/java/org/apache/htrace/protobuf/generated/SpanProtos.java
@@ -0,0 +1,2241 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: Span.proto
+
+package org.apache.htrace.protobuf.generated;
+
+public final class SpanProtos {
+  private SpanProtos() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+  }
+  public interface TimelineAnnotationOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+
+    // required int64 time = 1;
+    /**
+     * <code>required int64 time = 1;</code>
+     */
+    boolean hasTime();
+    /**
+     * <code>required int64 time = 1;</code>
+     */
+    long getTime();
+
+    // required string message = 2;
+    /**
+     * <code>required string message = 2;</code>
+     */
+    boolean hasMessage();
+    /**
+     * <code>required string message = 2;</code>
+     */
+    java.lang.String getMessage();
+    /**
+     * <code>required string message = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getMessageBytes();
+  }
+  /**
+   * Protobuf type {@code TimelineAnnotation}
+   */
+  public static final class TimelineAnnotation extends
+      com.google.protobuf.GeneratedMessage
+      implements TimelineAnnotationOrBuilder {
+    // Use TimelineAnnotation.newBuilder() to construct.
+    private TimelineAnnotation(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private TimelineAnnotation(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final TimelineAnnotation defaultInstance;
+    public static TimelineAnnotation getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public TimelineAnnotation getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private TimelineAnnotation(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+            case 8: {
+              bitField0_ |= 0x00000001;
+              time_ = input.readInt64();
+              break;
+            }
+            case 18: {
+              bitField0_ |= 0x00000002;
+              message_ = input.readBytes();
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_TimelineAnnotation_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_TimelineAnnotation_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.class, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<TimelineAnnotation> PARSER =
+        new com.google.protobuf.AbstractParser<TimelineAnnotation>() {
+      public TimelineAnnotation parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new TimelineAnnotation(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<TimelineAnnotation> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    // required int64 time = 1;
+    public static final int TIME_FIELD_NUMBER = 1;
+    private long time_;
+    /**
+     * <code>required int64 time = 1;</code>
+     */
+    public boolean hasTime() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>required int64 time = 1;</code>
+     */
+    public long getTime() {
+      return time_;
+    }
+
+    // required string message = 2;
+    public static final int MESSAGE_FIELD_NUMBER = 2;
+    private java.lang.Object message_;
+    /**
+     * <code>required string message = 2;</code>
+     */
+    public boolean hasMessage() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>required string message = 2;</code>
+     */
+    public java.lang.String getMessage() {
+      java.lang.Object ref = message_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (bs.isValidUtf8()) {
+          message_ = s;
+        }
+        return s;
+      }
+    }
+    /**
+     * <code>required string message = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getMessageBytes() {
+      java.lang.Object ref = message_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        message_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    private void initFields() {
+      time_ = 0L;
+      message_ = "";
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      if (!hasTime()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasMessage()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeInt64(1, time_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeBytes(2, getMessageBytes());
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(1, time_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(2, getMessageBytes());
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation)) {
+        return super.equals(obj);
+      }
+      org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation other = (org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation) obj;
+
+      boolean result = true;
+      result = result && (hasTime() == other.hasTime());
+      if (hasTime()) {
+        result = result && (getTime()
+            == other.getTime());
+      }
+      result = result && (hasMessage() == other.hasMessage());
+      if (hasMessage()) {
+        result = result && getMessage()
+            .equals(other.getMessage());
+      }
+      result = result &&
+          getUnknownFields().equals(other.getUnknownFields());
+      return result;
+    }
+
+    private int memoizedHashCode = 0;
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptorForType().hashCode();
+      if (hasTime()) {
+        hash = (37 * hash) + TIME_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getTime());
+      }
+      if (hasMessage()) {
+        hash = (37 * hash) + MESSAGE_FIELD_NUMBER;
+        hash = (53 * hash) + getMessage().hashCode();
+      }
+      hash = (29 * hash) + getUnknownFields().hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code TimelineAnnotation}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_TimelineAnnotation_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_TimelineAnnotation_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.class, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder.class);
+      }
+
+      // Construct using org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        time_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        message_ = "";
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_TimelineAnnotation_descriptor;
+      }
+
+      public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation getDefaultInstanceForType() {
+        return org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.getDefaultInstance();
+      }
+
+      public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation build() {
+        org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation buildPartial() {
+        org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation result = new org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.time_ = time_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.message_ = message_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation) {
+          return mergeFrom((org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation other) {
+        if (other == org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.getDefaultInstance()) return this;
+        if (other.hasTime()) {
+          setTime(other.getTime());
+        }
+        if (other.hasMessage()) {
+          bitField0_ |= 0x00000002;
+          message_ = other.message_;
+          onChanged();
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        if (!hasTime()) {
+          
+          return false;
+        }
+        if (!hasMessage()) {
+          
+          return false;
+        }
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      // required int64 time = 1;
+      private long time_ ;
+      /**
+       * <code>required int64 time = 1;</code>
+       */
+      public boolean hasTime() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>required int64 time = 1;</code>
+       */
+      public long getTime() {
+        return time_;
+      }
+      /**
+       * <code>required int64 time = 1;</code>
+       */
+      public Builder setTime(long value) {
+        bitField0_ |= 0x00000001;
+        time_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required int64 time = 1;</code>
+       */
+      public Builder clearTime() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        time_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      // required string message = 2;
+      private java.lang.Object message_ = "";
+      /**
+       * <code>required string message = 2;</code>
+       */
+      public boolean hasMessage() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>required string message = 2;</code>
+       */
+      public java.lang.String getMessage() {
+        java.lang.Object ref = message_;
+        if (!(ref instanceof java.lang.String)) {
+          java.lang.String s = ((com.google.protobuf.ByteString) ref)
+              .toStringUtf8();
+          message_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>required string message = 2;</code>
+       */
+      public com.google.protobuf.ByteString
+          getMessageBytes() {
+        java.lang.Object ref = message_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          message_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>required string message = 2;</code>
+       */
+      public Builder setMessage(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000002;
+        message_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required string message = 2;</code>
+       */
+      public Builder clearMessage() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        message_ = getDefaultInstance().getMessage();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required string message = 2;</code>
+       */
+      public Builder setMessageBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000002;
+        message_ = value;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:TimelineAnnotation)
+    }
+
+    static {
+      defaultInstance = new TimelineAnnotation(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:TimelineAnnotation)
+  }
+
+  public interface SpanOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+
+    // required int64 trace_id = 1;
+    /**
+     * <code>required int64 trace_id = 1;</code>
+     */
+    boolean hasTraceId();
+    /**
+     * <code>required int64 trace_id = 1;</code>
+     */
+    long getTraceId();
+
+    // required int64 parent_id = 2;
+    /**
+     * <code>required int64 parent_id = 2;</code>
+     */
+    boolean hasParentId();
+    /**
+     * <code>required int64 parent_id = 2;</code>
+     */
+    long getParentId();
+
+    // required int64 start = 3;
+    /**
+     * <code>required int64 start = 3;</code>
+     */
+    boolean hasStart();
+    /**
+     * <code>required int64 start = 3;</code>
+     */
+    long getStart();
+
+    // required int64 stop = 4;
+    /**
+     * <code>required int64 stop = 4;</code>
+     */
+    boolean hasStop();
+    /**
+     * <code>required int64 stop = 4;</code>
+     */
+    long getStop();
+
+    // required int64 span_id = 5;
+    /**
+     * <code>required int64 span_id = 5;</code>
+     */
+    boolean hasSpanId();
+    /**
+     * <code>required int64 span_id = 5;</code>
+     */
+    long getSpanId();
+
+    // required string process_id = 6;
+    /**
+     * <code>required string process_id = 6;</code>
+     */
+    boolean hasProcessId();
+    /**
+     * <code>required string process_id = 6;</code>
+     */
+    java.lang.String getProcessId();
+    /**
+     * <code>required string process_id = 6;</code>
+     */
+    com.google.protobuf.ByteString
+        getProcessIdBytes();
+
+    // required string description = 7;
+    /**
+     * <code>required string description = 7;</code>
+     */
+    boolean hasDescription();
+    /**
+     * <code>required string description = 7;</code>
+     */
+    java.lang.String getDescription();
+    /**
+     * <code>required string description = 7;</code>
+     */
+    com.google.protobuf.ByteString
+        getDescriptionBytes();
+
+    // repeated .TimelineAnnotation timeline = 8;
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    java.util.List<org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation> 
+        getTimelineList();
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation getTimeline(int index);
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    int getTimelineCount();
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    java.util.List<? extends org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder> 
+        getTimelineOrBuilderList();
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder getTimelineOrBuilder(
+        int index);
+  }
+  /**
+   * Protobuf type {@code Span}
+   */
+  public static final class Span extends
+      com.google.protobuf.GeneratedMessage
+      implements SpanOrBuilder {
+    // Use Span.newBuilder() to construct.
+    private Span(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private Span(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final Span defaultInstance;
+    public static Span getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public Span getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Span(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+            case 8: {
+              bitField0_ |= 0x00000001;
+              traceId_ = input.readInt64();
+              break;
+            }
+            case 16: {
+              bitField0_ |= 0x00000002;
+              parentId_ = input.readInt64();
+              break;
+            }
+            case 24: {
+              bitField0_ |= 0x00000004;
+              start_ = input.readInt64();
+              break;
+            }
+            case 32: {
+              bitField0_ |= 0x00000008;
+              stop_ = input.readInt64();
+              break;
+            }
+            case 40: {
+              bitField0_ |= 0x00000010;
+              spanId_ = input.readInt64();
+              break;
+            }
+            case 50: {
+              bitField0_ |= 0x00000020;
+              processId_ = input.readBytes();
+              break;
+            }
+            case 58: {
+              bitField0_ |= 0x00000040;
+              description_ = input.readBytes();
+              break;
+            }
+            case 66: {
+              if (!((mutable_bitField0_ & 0x00000080) == 0x00000080)) {
+                timeline_ = new java.util.ArrayList<org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation>();
+                mutable_bitField0_ |= 0x00000080;
+              }
+              timeline_.add(input.readMessage(org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.PARSER, extensionRegistry));
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        if (((mutable_bitField0_ & 0x00000080) == 0x00000080)) {
+          timeline_ = java.util.Collections.unmodifiableList(timeline_);
+        }
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_Span_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_Span_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.htrace.protobuf.generated.SpanProtos.Span.class, org.apache.htrace.protobuf.generated.SpanProtos.Span.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<Span> PARSER =
+        new com.google.protobuf.AbstractParser<Span>() {
+      public Span parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Span(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Span> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    // required int64 trace_id = 1;
+    public static final int TRACE_ID_FIELD_NUMBER = 1;
+    private long traceId_;
+    /**
+     * <code>required int64 trace_id = 1;</code>
+     */
+    public boolean hasTraceId() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>required int64 trace_id = 1;</code>
+     */
+    public long getTraceId() {
+      return traceId_;
+    }
+
+    // required int64 parent_id = 2;
+    public static final int PARENT_ID_FIELD_NUMBER = 2;
+    private long parentId_;
+    /**
+     * <code>required int64 parent_id = 2;</code>
+     */
+    public boolean hasParentId() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>required int64 parent_id = 2;</code>
+     */
+    public long getParentId() {
+      return parentId_;
+    }
+
+    // required int64 start = 3;
+    public static final int START_FIELD_NUMBER = 3;
+    private long start_;
+    /**
+     * <code>required int64 start = 3;</code>
+     */
+    public boolean hasStart() {
+      return ((bitField0_ & 0x00000004) == 0x00000004);
+    }
+    /**
+     * <code>required int64 start = 3;</code>
+     */
+    public long getStart() {
+      return start_;
+    }
+
+    // required int64 stop = 4;
+    public static final int STOP_FIELD_NUMBER = 4;
+    private long stop_;
+    /**
+     * <code>required int64 stop = 4;</code>
+     */
+    public boolean hasStop() {
+      return ((bitField0_ & 0x00000008) == 0x00000008);
+    }
+    /**
+     * <code>required int64 stop = 4;</code>
+     */
+    public long getStop() {
+      return stop_;
+    }
+
+    // required int64 span_id = 5;
+    public static final int SPAN_ID_FIELD_NUMBER = 5;
+    private long spanId_;
+    /**
+     * <code>required int64 span_id = 5;</code>
+     */
+    public boolean hasSpanId() {
+      return ((bitField0_ & 0x00000010) == 0x00000010);
+    }
+    /**
+     * <code>required int64 span_id = 5;</code>
+     */
+    public long getSpanId() {
+      return spanId_;
+    }
+
+    // required string process_id = 6;
+    public static final int PROCESS_ID_FIELD_NUMBER = 6;
+    private java.lang.Object processId_;
+    /**
+     * <code>required string process_id = 6;</code>
+     */
+    public boolean hasProcessId() {
+      return ((bitField0_ & 0x00000020) == 0x00000020);
+    }
+    /**
+     * <code>required string process_id = 6;</code>
+     */
+    public java.lang.String getProcessId() {
+      java.lang.Object ref = processId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (bs.isValidUtf8()) {
+          processId_ = s;
+        }
+        return s;
+      }
+    }
+    /**
+     * <code>required string process_id = 6;</code>
+     */
+    public com.google.protobuf.ByteString
+        getProcessIdBytes() {
+      java.lang.Object ref = processId_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        processId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    // required string description = 7;
+    public static final int DESCRIPTION_FIELD_NUMBER = 7;
+    private java.lang.Object description_;
+    /**
+     * <code>required string description = 7;</code>
+     */
+    public boolean hasDescription() {
+      return ((bitField0_ & 0x00000040) == 0x00000040);
+    }
+    /**
+     * <code>required string description = 7;</code>
+     */
+    public java.lang.String getDescription() {
+      java.lang.Object ref = description_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (bs.isValidUtf8()) {
+          description_ = s;
+        }
+        return s;
+      }
+    }
+    /**
+     * <code>required string description = 7;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDescriptionBytes() {
+      java.lang.Object ref = description_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        description_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    // repeated .TimelineAnnotation timeline = 8;
+    public static final int TIMELINE_FIELD_NUMBER = 8;
+    private java.util.List<org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation> timeline_;
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    public java.util.List<org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation> getTimelineList() {
+      return timeline_;
+    }
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    public java.util.List<? extends org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder> 
+        getTimelineOrBuilderList() {
+      return timeline_;
+    }
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    public int getTimelineCount() {
+      return timeline_.size();
+    }
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation getTimeline(int index) {
+      return timeline_.get(index);
+    }
+    /**
+     * <code>repeated .TimelineAnnotation timeline = 8;</code>
+     */
+    public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder getTimelineOrBuilder(
+        int index) {
+      return timeline_.get(index);
+    }
+
+    private void initFields() {
+      traceId_ = 0L;
+      parentId_ = 0L;
+      start_ = 0L;
+      stop_ = 0L;
+      spanId_ = 0L;
+      processId_ = "";
+      description_ = "";
+      timeline_ = java.util.Collections.emptyList();
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      if (!hasTraceId()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasParentId()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasStart()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasStop()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasSpanId()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasProcessId()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasDescription()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      for (int i = 0; i < getTimelineCount(); i++) {
+        if (!getTimeline(i).isInitialized()) {
+          memoizedIsInitialized = 0;
+          return false;
+        }
+      }
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeInt64(1, traceId_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeInt64(2, parentId_);
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        output.writeInt64(3, start_);
+      }
+      if (((bitField0_ & 0x00000008) == 0x00000008)) {
+        output.writeInt64(4, stop_);
+      }
+      if (((bitField0_ & 0x00000010) == 0x00000010)) {
+        output.writeInt64(5, spanId_);
+      }
+      if (((bitField0_ & 0x00000020) == 0x00000020)) {
+        output.writeBytes(6, getProcessIdBytes());
+      }
+      if (((bitField0_ & 0x00000040) == 0x00000040)) {
+        output.writeBytes(7, getDescriptionBytes());
+      }
+      for (int i = 0; i < timeline_.size(); i++) {
+        output.writeMessage(8, timeline_.get(i));
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(1, traceId_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(2, parentId_);
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(3, start_);
+      }
+      if (((bitField0_ & 0x00000008) == 0x00000008)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(4, stop_);
+      }
+      if (((bitField0_ & 0x00000010) == 0x00000010)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(5, spanId_);
+      }
+      if (((bitField0_ & 0x00000020) == 0x00000020)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(6, getProcessIdBytes());
+      }
+      if (((bitField0_ & 0x00000040) == 0x00000040)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(7, getDescriptionBytes());
+      }
+      for (int i = 0; i < timeline_.size(); i++) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeMessageSize(8, timeline_.get(i));
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof org.apache.htrace.protobuf.generated.SpanProtos.Span)) {
+        return super.equals(obj);
+      }
+      org.apache.htrace.protobuf.generated.SpanProtos.Span other = (org.apache.htrace.protobuf.generated.SpanProtos.Span) obj;
+
+      boolean result = true;
+      result = result && (hasTraceId() == other.hasTraceId());
+      if (hasTraceId()) {
+        result = result && (getTraceId()
+            == other.getTraceId());
+      }
+      result = result && (hasParentId() == other.hasParentId());
+      if (hasParentId()) {
+        result = result && (getParentId()
+            == other.getParentId());
+      }
+      result = result && (hasStart() == other.hasStart());
+      if (hasStart()) {
+        result = result && (getStart()
+            == other.getStart());
+      }
+      result = result && (hasStop() == other.hasStop());
+      if (hasStop()) {
+        result = result && (getStop()
+            == other.getStop());
+      }
+      result = result && (hasSpanId() == other.hasSpanId());
+      if (hasSpanId()) {
+        result = result && (getSpanId()
+            == other.getSpanId());
+      }
+      result = result && (hasProcessId() == other.hasProcessId());
+      if (hasProcessId()) {
+        result = result && getProcessId()
+            .equals(other.getProcessId());
+      }
+      result = result && (hasDescription() == other.hasDescription());
+      if (hasDescription()) {
+        result = result && getDescription()
+            .equals(other.getDescription());
+      }
+      result = result && getTimelineList()
+          .equals(other.getTimelineList());
+      result = result &&
+          getUnknownFields().equals(other.getUnknownFields());
+      return result;
+    }
+
+    private int memoizedHashCode = 0;
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptorForType().hashCode();
+      if (hasTraceId()) {
+        hash = (37 * hash) + TRACE_ID_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getTraceId());
+      }
+      if (hasParentId()) {
+        hash = (37 * hash) + PARENT_ID_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getParentId());
+      }
+      if (hasStart()) {
+        hash = (37 * hash) + START_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getStart());
+      }
+      if (hasStop()) {
+        hash = (37 * hash) + STOP_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getStop());
+      }
+      if (hasSpanId()) {
+        hash = (37 * hash) + SPAN_ID_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getSpanId());
+      }
+      if (hasProcessId()) {
+        hash = (37 * hash) + PROCESS_ID_FIELD_NUMBER;
+        hash = (53 * hash) + getProcessId().hashCode();
+      }
+      if (hasDescription()) {
+        hash = (37 * hash) + DESCRIPTION_FIELD_NUMBER;
+        hash = (53 * hash) + getDescription().hashCode();
+      }
+      if (getTimelineCount() > 0) {
+        hash = (37 * hash) + TIMELINE_FIELD_NUMBER;
+        hash = (53 * hash) + getTimelineList().hashCode();
+      }
+      hash = (29 * hash) + getUnknownFields().hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.htrace.protobuf.generated.SpanProtos.Span parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.htrace.protobuf.generated.SpanProtos.Span prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code Span}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.htrace.protobuf.generated.SpanProtos.SpanOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_Span_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_Span_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.htrace.protobuf.generated.SpanProtos.Span.class, org.apache.htrace.protobuf.generated.SpanProtos.Span.Builder.class);
+      }
+
+      // Construct using org.apache.htrace.protobuf.generated.SpanProtos.Span.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getTimelineFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        traceId_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        parentId_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        start_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000004);
+        stop_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000008);
+        spanId_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000010);
+        processId_ = "";
+        bitField0_ = (bitField0_ & ~0x00000020);
+        description_ = "";
+        bitField0_ = (bitField0_ & ~0x00000040);
+        if (timelineBuilder_ == null) {
+          timeline_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000080);
+        } else {
+          timelineBuilder_.clear();
+        }
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.htrace.protobuf.generated.SpanProtos.internal_static_Span_descriptor;
+      }
+
+      public org.apache.htrace.protobuf.generated.SpanProtos.Span getDefaultInstanceForType() {
+        return org.apache.htrace.protobuf.generated.SpanProtos.Span.getDefaultInstance();
+      }
+
+      public org.apache.htrace.protobuf.generated.SpanProtos.Span build() {
+        org.apache.htrace.protobuf.generated.SpanProtos.Span result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.htrace.protobuf.generated.SpanProtos.Span buildPartial() {
+        org.apache.htrace.protobuf.generated.SpanProtos.Span result = new org.apache.htrace.protobuf.generated.SpanProtos.Span(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.traceId_ = traceId_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.parentId_ = parentId_;
+        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+          to_bitField0_ |= 0x00000004;
+        }
+        result.start_ = start_;
+        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
+          to_bitField0_ |= 0x00000008;
+        }
+        result.stop_ = stop_;
+        if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
+          to_bitField0_ |= 0x00000010;
+        }
+        result.spanId_ = spanId_;
+        if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
+          to_bitField0_ |= 0x00000020;
+        }
+        result.processId_ = processId_;
+        if (((from_bitField0_ & 0x00000040) == 0x00000040)) {
+          to_bitField0_ |= 0x00000040;
+        }
+        result.description_ = description_;
+        if (timelineBuilder_ == null) {
+          if (((bitField0_ & 0x00000080) == 0x00000080)) {
+            timeline_ = java.util.Collections.unmodifiableList(timeline_);
+            bitField0_ = (bitField0_ & ~0x00000080);
+          }
+          result.timeline_ = timeline_;
+        } else {
+          result.timeline_ = timelineBuilder_.build();
+        }
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.htrace.protobuf.generated.SpanProtos.Span) {
+          return mergeFrom((org.apache.htrace.protobuf.generated.SpanProtos.Span)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.htrace.protobuf.generated.SpanProtos.Span other) {
+        if (other == org.apache.htrace.protobuf.generated.SpanProtos.Span.getDefaultInstance()) return this;
+        if (other.hasTraceId()) {
+          setTraceId(other.getTraceId());
+        }
+        if (other.hasParentId()) {
+          setParentId(other.getParentId());
+        }
+        if (other.hasStart()) {
+          setStart(other.getStart());
+        }
+        if (other.hasStop()) {
+          setStop(other.getStop());
+        }
+        if (other.hasSpanId()) {
+          setSpanId(other.getSpanId());
+        }
+        if (other.hasProcessId()) {
+          bitField0_ |= 0x00000020;
+          processId_ = other.processId_;
+          onChanged();
+        }
+        if (other.hasDescription()) {
+          bitField0_ |= 0x00000040;
+          description_ = other.description_;
+          onChanged();
+        }
+        if (timelineBuilder_ == null) {
+          if (!other.timeline_.isEmpty()) {
+            if (timeline_.isEmpty()) {
+              timeline_ = other.timeline_;
+              bitField0_ = (bitField0_ & ~0x00000080);
+            } else {
+              ensureTimelineIsMutable();
+              timeline_.addAll(other.timeline_);
+            }
+            onChanged();
+          }
+        } else {
+          if (!other.timeline_.isEmpty()) {
+            if (timelineBuilder_.isEmpty()) {
+              timelineBuilder_.dispose();
+              timelineBuilder_ = null;
+              timeline_ = other.timeline_;
+              bitField0_ = (bitField0_ & ~0x00000080);
+              timelineBuilder_ = 
+                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
+                   getTimelineFieldBuilder() : null;
+            } else {
+              timelineBuilder_.addAllMessages(other.timeline_);
+            }
+          }
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        if (!hasTraceId()) {
+          
+          return false;
+        }
+        if (!hasParentId()) {
+          
+          return false;
+        }
+        if (!hasStart()) {
+          
+          return false;
+        }
+        if (!hasStop()) {
+          
+          return false;
+        }
+        if (!hasSpanId()) {
+          
+          return false;
+        }
+        if (!hasProcessId()) {
+          
+          return false;
+        }
+        if (!hasDescription()) {
+          
+          return false;
+        }
+        for (int i = 0; i < getTimelineCount(); i++) {
+          if (!getTimeline(i).isInitialized()) {
+            
+            return false;
+          }
+        }
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.htrace.protobuf.generated.SpanProtos.Span parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.htrace.protobuf.generated.SpanProtos.Span) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      // required int64 trace_id = 1;
+      private long traceId_ ;
+      /**
+       * <code>required int64 trace_id = 1;</code>
+       */
+      public boolean hasTraceId() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>required int64 trace_id = 1;</code>
+       */
+      public long getTraceId() {
+        return traceId_;
+      }
+      /**
+       * <code>required int64 trace_id = 1;</code>
+       */
+      public Builder setTraceId(long value) {
+        bitField0_ |= 0x00000001;
+        traceId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required int64 trace_id = 1;</code>
+       */
+      public Builder clearTraceId() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        traceId_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      // required int64 parent_id = 2;
+      private long parentId_ ;
+      /**
+       * <code>required int64 parent_id = 2;</code>
+       */
+      public boolean hasParentId() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>required int64 parent_id = 2;</code>
+       */
+      public long getParentId() {
+        return parentId_;
+      }
+      /**
+       * <code>required int64 parent_id = 2;</code>
+       */
+      public Builder setParentId(long value) {
+        bitField0_ |= 0x00000002;
+        parentId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required int64 parent_id = 2;</code>
+       */
+      public Builder clearParentId() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        parentId_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      // required int64 start = 3;
+      private long start_ ;
+      /**
+       * <code>required int64 start = 3;</code>
+       */
+      public boolean hasStart() {
+        return ((bitField0_ & 0x00000004) == 0x00000004);
+      }
+      /**
+       * <code>required int64 start = 3;</code>
+       */
+      public long getStart() {
+        return start_;
+      }
+      /**
+       * <code>required int64 start = 3;</code>
+       */
+      public Builder setStart(long value) {
+        bitField0_ |= 0x00000004;
+        start_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required int64 start = 3;</code>
+       */
+      public Builder clearStart() {
+        bitField0_ = (bitField0_ & ~0x00000004);
+        start_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      // required int64 stop = 4;
+      private long stop_ ;
+      /**
+       * <code>required int64 stop = 4;</code>
+       */
+      public boolean hasStop() {
+        return ((bitField0_ & 0x00000008) == 0x00000008);
+      }
+      /**
+       * <code>required int64 stop = 4;</code>
+       */
+      public long getStop() {
+        return stop_;
+      }
+      /**
+       * <code>required int64 stop = 4;</code>
+       */
+      public Builder setStop(long value) {
+        bitField0_ |= 0x00000008;
+        stop_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required int64 stop = 4;</code>
+       */
+      public Builder clearStop() {
+        bitField0_ = (bitField0_ & ~0x00000008);
+        stop_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      // required int64 span_id = 5;
+      private long spanId_ ;
+      /**
+       * <code>required int64 span_id = 5;</code>
+       */
+      public boolean hasSpanId() {
+        return ((bitField0_ & 0x00000010) == 0x00000010);
+      }
+      /**
+       * <code>required int64 span_id = 5;</code>
+       */
+      public long getSpanId() {
+        return spanId_;
+      }
+      /**
+       * <code>required int64 span_id = 5;</code>
+       */
+      public Builder setSpanId(long value) {
+        bitField0_ |= 0x00000010;
+        spanId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required int64 span_id = 5;</code>
+       */
+      public Builder clearSpanId() {
+        bitField0_ = (bitField0_ & ~0x00000010);
+        spanId_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      // required string process_id = 6;
+      private java.lang.Object processId_ = "";
+      /**
+       * <code>required string process_id = 6;</code>
+       */
+      public boolean hasProcessId() {
+        return ((bitField0_ & 0x00000020) == 0x00000020);
+      }
+      /**
+       * <code>required string process_id = 6;</code>
+       */
+      public java.lang.String getProcessId() {
+        java.lang.Object ref = processId_;
+        if (!(ref instanceof java.lang.String)) {
+          java.lang.String s = ((com.google.protobuf.ByteString) ref)
+              .toStringUtf8();
+          processId_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>required string process_id = 6;</code>
+       */
+      public com.google.protobuf.ByteString
+          getProcessIdBytes() {
+        java.lang.Object ref = processId_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          processId_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>required string process_id = 6;</code>
+       */
+      public Builder setProcessId(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000020;
+        processId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required string process_id = 6;</code>
+       */
+      public Builder clearProcessId() {
+        bitField0_ = (bitField0_ & ~0x00000020);
+        processId_ = getDefaultInstance().getProcessId();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required string process_id = 6;</code>
+       */
+      public Builder setProcessIdBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000020;
+        processId_ = value;
+        onChanged();
+        return this;
+      }
+
+      // required string description = 7;
+      private java.lang.Object description_ = "";
+      /**
+       * <code>required string description = 7;</code>
+       */
+      public boolean hasDescription() {
+        return ((bitField0_ & 0x00000040) == 0x00000040);
+      }
+      /**
+       * <code>required string description = 7;</code>
+       */
+      public java.lang.String getDescription() {
+        java.lang.Object ref = description_;
+        if (!(ref instanceof java.lang.String)) {
+          java.lang.String s = ((com.google.protobuf.ByteString) ref)
+              .toStringUtf8();
+          description_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>required string description = 7;</code>
+       */
+      public com.google.protobuf.ByteString
+          getDescriptionBytes() {
+        java.lang.Object ref = description_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          description_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>required string description = 7;</code>
+       */
+      public Builder setDescription(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000040;
+        description_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required string description = 7;</code>
+       */
+      public Builder clearDescription() {
+        bitField0_ = (bitField0_ & ~0x00000040);
+        description_ = getDefaultInstance().getDescription();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>required string description = 7;</code>
+       */
+      public Builder setDescriptionBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000040;
+        description_ = value;
+        onChanged();
+        return this;
+      }
+
+      // repeated .TimelineAnnotation timeline = 8;
+      private java.util.List<org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation> timeline_ =
+        java.util.Collections.emptyList();
+      private void ensureTimelineIsMutable() {
+        if (!((bitField0_ & 0x00000080) == 0x00000080)) {
+          timeline_ = new java.util.ArrayList<org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation>(timeline_);
+          bitField0_ |= 0x00000080;
+         }
+      }
+
+      private com.google.protobuf.RepeatedFieldBuilder<
+          org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder> timelineBuilder_;
+
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public java.util.List<org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation> getTimelineList() {
+        if (timelineBuilder_ == null) {
+          return java.util.Collections.unmodifiableList(timeline_);
+        } else {
+          return timelineBuilder_.getMessageList();
+        }
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public int getTimelineCount() {
+        if (timelineBuilder_ == null) {
+          return timeline_.size();
+        } else {
+          return timelineBuilder_.getCount();
+        }
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation getTimeline(int index) {
+        if (timelineBuilder_ == null) {
+          return timeline_.get(index);
+        } else {
+          return timelineBuilder_.getMessage(index);
+        }
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder setTimeline(
+          int index, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation value) {
+        if (timelineBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureTimelineIsMutable();
+          timeline_.set(index, value);
+          onChanged();
+        } else {
+          timelineBuilder_.setMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder setTimeline(
+          int index, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder builderForValue) {
+        if (timelineBuilder_ == null) {
+          ensureTimelineIsMutable();
+          timeline_.set(index, builderForValue.build());
+          onChanged();
+        } else {
+          timelineBuilder_.setMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder addTimeline(org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation value) {
+        if (timelineBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureTimelineIsMutable();
+          timeline_.add(value);
+          onChanged();
+        } else {
+          timelineBuilder_.addMessage(value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder addTimeline(
+          int index, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation value) {
+        if (timelineBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureTimelineIsMutable();
+          timeline_.add(index, value);
+          onChanged();
+        } else {
+          timelineBuilder_.addMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder addTimeline(
+          org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder builderForValue) {
+        if (timelineBuilder_ == null) {
+          ensureTimelineIsMutable();
+          timeline_.add(builderForValue.build());
+          onChanged();
+        } else {
+          timelineBuilder_.addMessage(builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder addTimeline(
+          int index, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder builderForValue) {
+        if (timelineBuilder_ == null) {
+          ensureTimelineIsMutable();
+          timeline_.add(index, builderForValue.build());
+          onChanged();
+        } else {
+          timelineBuilder_.addMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder addAllTimeline(
+          java.lang.Iterable<? extends org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation> values) {
+        if (timelineBuilder_ == null) {
+          ensureTimelineIsMutable();
+          super.addAll(values, timeline_);
+          onChanged();
+        } else {
+          timelineBuilder_.addAllMessages(values);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder clearTimeline() {
+        if (timelineBuilder_ == null) {
+          timeline_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000080);
+          onChanged();
+        } else {
+          timelineBuilder_.clear();
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public Builder removeTimeline(int index) {
+        if (timelineBuilder_ == null) {
+          ensureTimelineIsMutable();
+          timeline_.remove(index);
+          onChanged();
+        } else {
+          timelineBuilder_.remove(index);
+        }
+        return this;
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder getTimelineBuilder(
+          int index) {
+        return getTimelineFieldBuilder().getBuilder(index);
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder getTimelineOrBuilder(
+          int index) {
+        if (timelineBuilder_ == null) {
+          return timeline_.get(index);  } else {
+          return timelineBuilder_.getMessageOrBuilder(index);
+        }
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public java.util.List<? extends org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder> 
+           getTimelineOrBuilderList() {
+        if (timelineBuilder_ != null) {
+          return timelineBuilder_.getMessageOrBuilderList();
+        } else {
+          return java.util.Collections.unmodifiableList(timeline_);
+        }
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder addTimelineBuilder() {
+        return getTimelineFieldBuilder().addBuilder(
+            org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder addTimelineBuilder(
+          int index) {
+        return getTimelineFieldBuilder().addBuilder(
+            index, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.getDefaultInstance());
+      }
+      /**
+       * <code>repeated .TimelineAnnotation timeline = 8;</code>
+       */
+      public java.util.List<org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder> 
+           getTimelineBuilderList() {
+        return getTimelineFieldBuilder().getBuilderList();
+      }
+      private com.google.protobuf.RepeatedFieldBuilder<
+          org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder> 
+          getTimelineFieldBuilder() {
+        if (timelineBuilder_ == null) {
+          timelineBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
+              org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotation.Builder, org.apache.htrace.protobuf.generated.SpanProtos.TimelineAnnotationOrBuilder>(
+                  timeline_,
+                  ((bitField0_ & 0x00000080) == 0x00000080),
+                  getParentForChildren(),
+                  isClean());
+          timeline_ = null;
+        }
+        return timelineBuilder_;
+      }
+
+      // @@protoc_insertion_point(builder_scope:Span)
+    }
+
+    static {
+      defaultInstance = new Span(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:Span)
+  }
+
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_TimelineAnnotation_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_TimelineAnnotation_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_Span_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_Span_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\nSpan.proto\"3\n\022TimelineAnnotation\022\014\n\004ti" +
+      "me\030\001 \002(\003\022\017\n\007message\030\002 \002(\t\"\251\001\n\004Span\022\020\n\010tr" +
+      "ace_id\030\001 \002(\003\022\021\n\tparent_id\030\002 \002(\003\022\r\n\005start" +
+      "\030\003 \002(\003\022\014\n\004stop\030\004 \002(\003\022\017\n\007span_id\030\005 \002(\003\022\022\n" +
+      "\nprocess_id\030\006 \002(\t\022\023\n\013description\030\007 \002(\t\022%" +
+      "\n\010timeline\030\010 \003(\0132\023.TimelineAnnotationB0\n" +
+      "\035org.htrace.protobuf.generatedB\nSpanProt" +
+      "osH\001\240\001\001"
+    };
+    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
+      new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
+        public com.google.protobuf.ExtensionRegistry assignDescriptors(
+            com.google.protobuf.Descriptors.FileDescriptor root) {
+          descriptor = root;
+          internal_static_TimelineAnnotation_descriptor =
+            getDescriptor().getMessageTypes().get(0);
+          internal_static_TimelineAnnotation_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_TimelineAnnotation_descriptor,
+              new java.lang.String[] { "Time", "Message", });
+          internal_static_Span_descriptor =
+            getDescriptor().getMessageTypes().get(1);
+          internal_static_Span_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_Span_descriptor,
+              new java.lang.String[] { "TraceId", "ParentId", "Start", "Stop", "SpanId", "ProcessId", "Description", "Timeline", });
+          return null;
+        }
+      };
+    com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        }, assigner);
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

http://git-wip-us.apache.org/repos/asf/incubator-htrace/blob/6752709e/htrace-kudu/src/main/protobuf/Span.proto
----------------------------------------------------------------------
diff --git a/htrace-kudu/src/main/protobuf/Span.proto b/htrace-kudu/src/main/protobuf/Span.proto
new file mode 100644
index 0000000..e8dc369
--- /dev/null
+++ b/htrace-kudu/src/main/protobuf/Span.proto
@@ -0,0 +1,38 @@
+/**
+ * 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.
+ */
+
+option java_package = "org.apache.htrace.protobuf.generated";
+option java_outer_classname = "SpanProtos";
+option java_generate_equals_and_hash = true;
+option optimize_for = SPEED;
+
+message TimelineAnnotation {
+  required int64 time = 1;
+  required string message = 2;
+}
+
+message Span {
+  required int64 trace_id = 1;
+  required int64 parent_id = 2;
+  required int64 start = 3;
+  required int64 stop = 4;
+  required int64 span_id = 5;
+  required string process_id = 6;
+  required string description = 7;
+  repeated TimelineAnnotation timeline = 8;
+}

http://git-wip-us.apache.org/repos/asf/incubator-htrace/blob/6752709e/htrace-kudu/src/test/resources/log4j.properties
----------------------------------------------------------------------
diff --git a/htrace-kudu/src/test/resources/log4j.properties b/htrace-kudu/src/test/resources/log4j.properties
new file mode 100644
index 0000000..416c975
--- /dev/null
+++ b/htrace-kudu/src/test/resources/log4j.properties
@@ -0,0 +1,25 @@
+# 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.
+
+# By default, everything goes to console and file
+log4j.rootLogger=WARN, A1
+
+# A1 is set to be a ConsoleAppender.
+log4j.appender.A1=org.apache.log4j.ConsoleAppender
+log4j.appender.A1.layout=org.apache.log4j.PatternLayout
+log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
+log4j.appender.A1.ImmediateFlush=true
+
+log4j.logger.org.apache.htrace=INFO, A1

http://git-wip-us.apache.org/repos/asf/incubator-htrace/blob/6752709e/pom.xml
----------------------------------------------------------------------
diff --git a/pom.xml b/pom.xml
index 932f29a..879c8f1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,6 +35,7 @@ language governing permissions and limitations under the License. -->
     <module>htrace-hbase</module>
     <module>htrace-flume</module>
     <module>htrace-htraced</module>
+    <module>htrace-kudu</module>
   </modules>
 
   <licenses>


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