dongjoon-hyun commented on PR #28:
URL: https://github.com/apache/orc-format/pull/28#issuecomment-3184665762

   The changes look like the following.
   
   ```
   diff --git a/pom.xml b/pom.xml
   index c90fe59..b48ae00 100644
   --- a/pom.xml
   +++ b/pom.xml
   @@ -61,7 +61,7 @@
            <maven.compiler.release>17</maven.compiler.release>
            
<maven.compiler.useIncrementalCompilation>false</maven.compiler.useIncrementalCompilation>
            <maven.version>3.9.6</maven.version>
   -        <protoc.version>3.17.3</protoc.version>
   +        <protoc.version>3.25.8</protoc.version>
            <test.tmp.dir>${project.build.directory}/testing-tmp</test.tmp.dir>
        </properties>
    
   @@ -69,7 +69,7 @@
            <dependency>
                <groupId>com.google.protobuf</groupId>
                <artifactId>protobuf-java</artifactId>
   -            <version>3.25.5</version>
   +            <version>3.25.8</version>
            </dependency>
        </dependencies>
    
   diff --git a/target/generated-sources/org/apache/orc/OrcProto.java 
b/target/generated-sources/org/apache/orc/OrcProto.java
   index 56285af..913e6b2 100644
   --- a/target/generated-sources/org/apache/orc/OrcProto.java
   +++ b/target/generated-sources/org/apache/orc/OrcProto.java
   @@ -1,6 +1,7 @@
    // Generated by the protocol buffer compiler.  DO NOT EDIT!
    // source: orc_proto.proto
    
   +// Protobuf Java Version: 3.25.8
    package org.apache.orc;
    
    public final class OrcProto {
   @@ -575,64 +576,6 @@ public final class OrcProto {
          return new IntegerStatistics();
        }
    
   -    @java.lang.Override
   -    public final com.google.protobuf.UnknownFieldSet
   -    getUnknownFields() {
   -      return this.unknownFields;
   -    }
   -    private IntegerStatistics(
   -        com.google.protobuf.CodedInputStream input,
   -        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
   -        throws com.google.protobuf.InvalidProtocolBufferException {
   -      this();
   -      if (extensionRegistry == null) {
   -        throw new java.lang.NullPointerException();
   -      }
   -      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;
   -            case 8: {
   -              bitField0_ |= 0x00000001;
   -              minimum_ = input.readSInt64();
   -              break;
   -            }
   -            case 16: {
   -              bitField0_ |= 0x00000002;
   -              maximum_ = input.readSInt64();
   -              break;
   -            }
   -            case 24: {
   -              bitField0_ |= 0x00000004;
   -              sum_ = input.readSInt64();
   -              break;
   -            }
   -            default: {
   -              if (!parseUnknownField(
   -                  input, unknownFields, extensionRegistry, tag)) {
   -                done = true;
   -              }
   -              break;
   -            }
   -          }
   -        }
   -      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
   -        throw e.setUnfinishedMessage(this);
   -      } catch (java.io.IOException e) {
   -        throw new com.google.protobuf.InvalidProtocolBufferException(
   -            e).setUnfinishedMessage(this);
   -      } finally {
   -        this.unknownFields = unknownFields.build();
   -        makeExtensionsImmutable();
   -      }
   -    }
        public static final com.google.protobuf.Descriptors.Descriptor
            getDescriptor() {
          return 
org.apache.orc.OrcProto.internal_static_orc_proto_IntegerStatistics_descriptor;
   @@ -648,7 +591,7 @@ public final class OrcProto {
    
        private int bitField0_;
        public static final int MINIMUM_FIELD_NUMBER = 1;
   -    private long minimum_;
   +    private long minimum_ = 0L;
        /**
         * <code>optional sint64 minimum = 1;</code>
         * @return Whether the minimum field is set.
   @@ -667,7 +610,7 @@ public final class OrcProto {
        }
    
        public static final int MAXIMUM_FIELD_NUMBER = 2;
   -    private long maximum_;
   +    private long maximum_ = 0L;
        /**
         * <code>optional sint64 maximum = 2;</code>
         * @return Whether the maximum field is set.
   @@ -686,7 +629,7 @@ public final class OrcProto {
        }
    
        public static final int SUM_FIELD_NUMBER = 3;
   -    private long sum_;
   +    private long sum_ = 0L;
        /**
         * <code>optional sint64 sum = 3;</code>
         * @return Whether the sum field is set.
   @@ -727,7 +670,7 @@ public final class OrcProto {
          if (((bitField0_ & 0x00000004) != 0)) {
            output.writeSInt64(3, sum_);
          }
   -      unknownFields.writeTo(output);
   +      getUnknownFields().writeTo(output);
        }
    
        @java.lang.Override
   @@ -748,7 +691,7 @@ public final class OrcProto {
            size += com.google.protobuf.CodedOutputStream
              .computeSInt64Size(3, sum_);
          }
   -      size += unknownFields.getSerializedSize();
   +      size += getUnknownFields().getSerializedSize();
          memoizedSize = size;
          return size;
        }
   @@ -778,7 +721,7 @@ public final class OrcProto {
            if (getSum()
                != other.getSum()) return false;
          }
   -      if (!unknownFields.equals(other.unknownFields)) return false;
   +      if (!getUnknownFields().equals(other.getUnknownFields())) return 
false;
          return true;
        }
    
   @@ -804,7 +747,7 @@ public final class OrcProto {
            hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
                getSum());
          }
   -      hash = (29 * hash) + unknownFields.hashCode();
   +      hash = (29 * hash) + getUnknownFields().hashCode();
          memoizedHashCode = hash;
          return hash;
        }
   @@ -853,11 +796,13 @@ public final class OrcProto {
          return com.google.protobuf.GeneratedMessageV3
              .parseWithIOException(PARSER, input, extensionRegistry);
        }
   +
        public static org.apache.orc.OrcProto.IntegerStatistics 
parseDelimitedFrom(java.io.InputStream input)
            throws java.io.IOException {
          return com.google.protobuf.GeneratedMessageV3
              .parseDelimitedWithIOException(PARSER, input);
        }
   +
        public static org.apache.orc.OrcProto.IntegerStatistics 
parseDelimitedFrom(
            java.io.InputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
   @@ -921,28 +866,21 @@ public final class OrcProto {
    
          // Construct using 
org.apache.orc.OrcProto.IntegerStatistics.newBuilder()
          private Builder() {
   -        maybeForceBuilderInitialization();
   +
          }
    
          private Builder(
              com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
            super(parent);
   -        maybeForceBuilderInitialization();
   -      }
   -      private void maybeForceBuilderInitialization() {
   -        if (com.google.protobuf.GeneratedMessageV3
   -                .alwaysUseFieldBuilders) {
   -        }
   +
          }
          @java.lang.Override
          public Builder clear() {
            super.clear();
   +        bitField0_ = 0;
            minimum_ = 0L;
   -        bitField0_ = (bitField0_ & ~0x00000001);
            maximum_ = 0L;
   -        bitField0_ = (bitField0_ & ~0x00000002);
            sum_ = 0L;
   -        bitField0_ = (bitField0_ & ~0x00000004);
            return this;
          }
    
   @@ -969,6 +907,12 @@ public final class OrcProto {
          @java.lang.Override
          public org.apache.orc.OrcProto.IntegerStatistics buildPartial() {
            org.apache.orc.OrcProto.IntegerStatistics result = new 
org.apache.orc.OrcProto.IntegerStatistics(this);
   +        if (bitField0_ != 0) { buildPartial0(result); }
   +        onBuilt();
   +        return result;
   +      }
   +
   +      private void buildPartial0(org.apache.orc.OrcProto.IntegerStatistics 
result) {
            int from_bitField0_ = bitField0_;
            int to_bitField0_ = 0;
            if (((from_bitField0_ & 0x00000001) != 0)) {
   @@ -983,9 +927,7 @@ public final class OrcProto {
              result.sum_ = sum_;
              to_bitField0_ |= 0x00000004;
            }
   -        result.bitField0_ = to_bitField0_;
   -        onBuilt();
   -        return result;
   +        result.bitField0_ |= to_bitField0_;
          }
    
          @java.lang.Override
   @@ -1041,7 +983,7 @@ public final class OrcProto {
            if (other.hasSum()) {
              setSum(other.getSum());
            }
   -        this.mergeUnknownFields(other.unknownFields);
   +        this.mergeUnknownFields(other.getUnknownFields());
            onChanged();
            return this;
          }
   @@ -1056,17 +998,45 @@ public final class OrcProto {
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws java.io.IOException {
   -        org.apache.orc.OrcProto.IntegerStatistics parsedMessage = null;
   +        if (extensionRegistry == null) {
   +          throw new java.lang.NullPointerException();
   +        }
            try {
   -          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
   +          boolean done = false;
   +          while (!done) {
   +            int tag = input.readTag();
   +            switch (tag) {
   +              case 0:
   +                done = true;
   +                break;
   +              case 8: {
   +                minimum_ = input.readSInt64();
   +                bitField0_ |= 0x00000001;
   +                break;
   +              } // case 8
   +              case 16: {
   +                maximum_ = input.readSInt64();
   +                bitField0_ |= 0x00000002;
   +                break;
   +              } // case 16
   +              case 24: {
   +                sum_ = input.readSInt64();
   +                bitField0_ |= 0x00000004;
   +                break;
   +              } // case 24
   +              default: {
   +                if (!super.parseUnknownField(input, extensionRegistry, 
tag)) {
   +                  done = true; // was an endgroup tag
   +                }
   +                break;
   +              } // default:
   +            } // switch (tag)
   +          } // while (!done)
            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
   -          parsedMessage = (org.apache.orc.OrcProto.IntegerStatistics) 
e.getUnfinishedMessage();
              throw e.unwrapIOException();
            } finally {
   -          if (parsedMessage != null) {
   -            mergeFrom(parsedMessage);
   -          }
   -        }
   +          onChanged();
   +        } // finally
            return this;
          }
          private int bitField0_;
   @@ -1094,8 +1064,9 @@ public final class OrcProto {
           * @return This builder for chaining.
           */
          public Builder setMinimum(long value) {
   -        bitField0_ |= 0x00000001;
   +
            minimum_ = value;
   +        bitField0_ |= 0x00000001;
            onChanged();
            return this;
          }
   @@ -1133,8 +1104,9 @@ public final class OrcProto {
           * @return This builder for chaining.
           */
          public Builder setMaximum(long value) {
   -        bitField0_ |= 0x00000002;
   +
            maximum_ = value;
   +        bitField0_ |= 0x00000002;
            onChanged();
            return this;
          }
   @@ -1172,8 +1144,9 @@ public final class OrcProto {
           * @return This builder for chaining.
           */
          public Builder setSum(long value) {
   -        bitField0_ |= 0x00000004;
   +
            sum_ = value;
   +        bitField0_ |= 0x00000004;
            onChanged();
            return this;
          }
   @@ -1220,7 +1193,18 @@ public final class OrcProto {
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws com.google.protobuf.InvalidProtocolBufferException {
   -        return new IntegerStatistics(input, extensionRegistry);
   +        Builder builder = newBuilder();
   +        try {
   +          builder.mergeFrom(input, extensionRegistry);
   +        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
   +          throw e.setUnfinishedMessage(builder.buildPartial());
   +        } catch (com.google.protobuf.UninitializedMessageException e) {
   +          throw 
e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
   +        } catch (java.io.IOException e) {
   +          throw new com.google.protobuf.InvalidProtocolBufferException(e)
   +              .setUnfinishedMessage(builder.buildPartial());
   +        }
   +        return builder.buildPartial();
          }
        };
    
   @@ -1299,64 +1283,6 @@ public final class OrcProto {
          return new DoubleStatistics();
        }
    
   -    @java.lang.Override
   -    public final com.google.protobuf.UnknownFieldSet
   -    getUnknownFields() {
   -      return this.unknownFields;
   -    }
   -    private DoubleStatistics(
   -        com.google.protobuf.CodedInputStream input,
   -        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
   -        throws com.google.protobuf.InvalidProtocolBufferException {
   -      this();
   -      if (extensionRegistry == null) {
   -        throw new java.lang.NullPointerException();
   -      }
   -      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;
   -            case 9: {
   -              bitField0_ |= 0x00000001;
   -              minimum_ = input.readDouble();
   -              break;
   -            }
   -            case 17: {
   -              bitField0_ |= 0x00000002;
   -              maximum_ = input.readDouble();
   -              break;
   -            }
   -            case 25: {
   -              bitField0_ |= 0x00000004;
   -              sum_ = input.readDouble();
   -              break;
   -            }
   -            default: {
   -              if (!parseUnknownField(
   -                  input, unknownFields, extensionRegistry, tag)) {
   -                done = true;
   -              }
   -              break;
   -            }
   -          }
   -        }
   -      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
   -        throw e.setUnfinishedMessage(this);
   -      } catch (java.io.IOException e) {
   -        throw new com.google.protobuf.InvalidProtocolBufferException(
   -            e).setUnfinishedMessage(this);
   -      } finally {
   -        this.unknownFields = unknownFields.build();
   -        makeExtensionsImmutable();
   -      }
   -    }
        public static final com.google.protobuf.Descriptors.Descriptor
            getDescriptor() {
          return 
org.apache.orc.OrcProto.internal_static_orc_proto_DoubleStatistics_descriptor;
   @@ -1372,7 +1298,7 @@ public final class OrcProto {
    
        private int bitField0_;
        public static final int MINIMUM_FIELD_NUMBER = 1;
   -    private double minimum_;
   +    private double minimum_ = 0D;
        /**
         * <code>optional double minimum = 1;</code>
         * @return Whether the minimum field is set.
   @@ -1391,7 +1317,7 @@ public final class OrcProto {
        }
    
        public static final int MAXIMUM_FIELD_NUMBER = 2;
   -    private double maximum_;
   +    private double maximum_ = 0D;
        /**
         * <code>optional double maximum = 2;</code>
         * @return Whether the maximum field is set.
   @@ -1410,7 +1336,7 @@ public final class OrcProto {
        }
    
        public static final int SUM_FIELD_NUMBER = 3;
   -    private double sum_;
   +    private double sum_ = 0D;
        /**
         * <code>optional double sum = 3;</code>
         * @return Whether the sum field is set.
   @@ -1451,7 +1377,7 @@ public final class OrcProto {
          if (((bitField0_ & 0x00000004) != 0)) {
            output.writeDouble(3, sum_);
          }
   -      unknownFields.writeTo(output);
   +      getUnknownFields().writeTo(output);
        }
    
        @java.lang.Override
   @@ -1472,7 +1398,7 @@ public final class OrcProto {
            size += com.google.protobuf.CodedOutputStream
              .computeDoubleSize(3, sum_);
          }
   -      size += unknownFields.getSerializedSize();
   +      size += getUnknownFields().getSerializedSize();
          memoizedSize = size;
          return size;
        }
   @@ -1505,7 +1431,7 @@ public final class OrcProto {
                != java.lang.Double.doubleToLongBits(
                    other.getSum())) return false;
          }
   -      if (!unknownFields.equals(other.unknownFields)) return false;
   +      if (!getUnknownFields().equals(other.getUnknownFields())) return 
false;
          return true;
        }
    
   @@ -1531,7 +1457,7 @@ public final class OrcProto {
            hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
                java.lang.Double.doubleToLongBits(getSum()));
          }
   -      hash = (29 * hash) + unknownFields.hashCode();
   +      hash = (29 * hash) + getUnknownFields().hashCode();
          memoizedHashCode = hash;
          return hash;
        }
   @@ -1580,11 +1506,13 @@ public final class OrcProto {
          return com.google.protobuf.GeneratedMessageV3
              .parseWithIOException(PARSER, input, extensionRegistry);
        }
   +
        public static org.apache.orc.OrcProto.DoubleStatistics 
parseDelimitedFrom(java.io.InputStream input)
            throws java.io.IOException {
          return com.google.protobuf.GeneratedMessageV3
              .parseDelimitedWithIOException(PARSER, input);
        }
   +
        public static org.apache.orc.OrcProto.DoubleStatistics 
parseDelimitedFrom(
            java.io.InputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
   @@ -1648,28 +1576,21 @@ public final class OrcProto {
    
          // Construct using 
org.apache.orc.OrcProto.DoubleStatistics.newBuilder()
          private Builder() {
   -        maybeForceBuilderInitialization();
   +
          }
    
          private Builder(
              com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
            super(parent);
   -        maybeForceBuilderInitialization();
   -      }
   -      private void maybeForceBuilderInitialization() {
   -        if (com.google.protobuf.GeneratedMessageV3
   -                .alwaysUseFieldBuilders) {
   -        }
   +
          }
          @java.lang.Override
          public Builder clear() {
            super.clear();
   +        bitField0_ = 0;
            minimum_ = 0D;
   -        bitField0_ = (bitField0_ & ~0x00000001);
            maximum_ = 0D;
   -        bitField0_ = (bitField0_ & ~0x00000002);
            sum_ = 0D;
   -        bitField0_ = (bitField0_ & ~0x00000004);
            return this;
          }
    
   @@ -1696,6 +1617,12 @@ public final class OrcProto {
          @java.lang.Override
          public org.apache.orc.OrcProto.DoubleStatistics buildPartial() {
            org.apache.orc.OrcProto.DoubleStatistics result = new 
org.apache.orc.OrcProto.DoubleStatistics(this);
   +        if (bitField0_ != 0) { buildPartial0(result); }
   +        onBuilt();
   +        return result;
   +      }
   +
   +      private void buildPartial0(org.apache.orc.OrcProto.DoubleStatistics 
result) {
            int from_bitField0_ = bitField0_;
            int to_bitField0_ = 0;
            if (((from_bitField0_ & 0x00000001) != 0)) {
   @@ -1710,9 +1637,7 @@ public final class OrcProto {
              result.sum_ = sum_;
              to_bitField0_ |= 0x00000004;
            }
   -        result.bitField0_ = to_bitField0_;
   -        onBuilt();
   -        return result;
   +        result.bitField0_ |= to_bitField0_;
          }
    
          @java.lang.Override
   @@ -1768,7 +1693,7 @@ public final class OrcProto {
            if (other.hasSum()) {
              setSum(other.getSum());
            }
   -        this.mergeUnknownFields(other.unknownFields);
   +        this.mergeUnknownFields(other.getUnknownFields());
            onChanged();
            return this;
          }
   @@ -1783,17 +1708,45 @@ public final class OrcProto {
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws java.io.IOException {
   -        org.apache.orc.OrcProto.DoubleStatistics parsedMessage = null;
   +        if (extensionRegistry == null) {
   +          throw new java.lang.NullPointerException();
   +        }
            try {
   -          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
   +          boolean done = false;
   +          while (!done) {
   +            int tag = input.readTag();
   +            switch (tag) {
   +              case 0:
   +                done = true;
   +                break;
   +              case 9: {
   +                minimum_ = input.readDouble();
   +                bitField0_ |= 0x00000001;
   +                break;
   +              } // case 9
   +              case 17: {
   +                maximum_ = input.readDouble();
   +                bitField0_ |= 0x00000002;
   +                break;
   +              } // case 17
   +              case 25: {
   +                sum_ = input.readDouble();
   +                bitField0_ |= 0x00000004;
   +                break;
   +              } // case 25
   +              default: {
   +                if (!super.parseUnknownField(input, extensionRegistry, 
tag)) {
   +                  done = true; // was an endgroup tag
   +                }
   +                break;
   +              } // default:
   +            } // switch (tag)
   +          } // while (!done)
            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
   -          parsedMessage = (org.apache.orc.OrcProto.DoubleStatistics) 
e.getUnfinishedMessage();
              throw e.unwrapIOException();
            } finally {
   -          if (parsedMessage != null) {
   -            mergeFrom(parsedMessage);
   -          }
   -        }
   +          onChanged();
   +        } // finally
            return this;
          }
          private int bitField0_;
   @@ -1821,8 +1774,9 @@ public final class OrcProto {
           * @return This builder for chaining.
           */
          public Builder setMinimum(double value) {
   -        bitField0_ |= 0x00000001;
   +
            minimum_ = value;
   +        bitField0_ |= 0x00000001;
            onChanged();
            return this;
          }
   @@ -1860,8 +1814,9 @@ public final class OrcProto {
           * @return This builder for chaining.
           */
          public Builder setMaximum(double value) {
   -        bitField0_ |= 0x00000002;
   +
            maximum_ = value;
   +        bitField0_ |= 0x00000002;
            onChanged();
            return this;
          }
   @@ -1899,8 +1854,9 @@ public final class OrcProto {
           * @return This builder for chaining.
           */
          public Builder setSum(double value) {
   -        bitField0_ |= 0x00000004;
   +
            sum_ = value;
   +        bitField0_ |= 0x00000004;
            onChanged();
            return this;
          }
   @@ -1947,7 +1903,18 @@ public final class OrcProto {
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws com.google.protobuf.InvalidProtocolBufferException {
   -        return new DoubleStatistics(input, extensionRegistry);
   +        Builder builder = newBuilder();
   +        try {
   +          builder.mergeFrom(input, extensionRegistry);
   +        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
   +          throw e.setUnfinishedMessage(builder.buildPartial());
   +        } catch (com.google.protobuf.UninitializedMessageException e) {
   +          throw 
e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
   +        } catch (java.io.IOException e) {
   +          throw new com.google.protobuf.InvalidProtocolBufferException(e)
   +              .setUnfinishedMessage(builder.buildPartial());
   +        }
   +        return builder.buildPartial();
          }
        };
    
   @@ -2099,78 +2066,6 @@ public final class OrcProto {
          return new StringStatistics();
        }
    
   -    @java.lang.Override
   -    public final com.google.protobuf.UnknownFieldSet
   -    getUnknownFields() {
   -      return this.unknownFields;
   -    }
   -    private StringStatistics(
   -        com.google.protobuf.CodedInputStream input,
   -        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
   -        throws com.google.protobuf.InvalidProtocolBufferException {
   -      this();
   -      if (extensionRegistry == null) {
   -        throw new java.lang.NullPointerException();
   -      }
   -      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;
   -            case 10: {
   -              com.google.protobuf.ByteString bs = input.readBytes();
   -              bitField0_ |= 0x00000001;
   -              minimum_ = bs;
   -              break;
   -            }
   -            case 18: {
   -              com.google.protobuf.ByteString bs = input.readBytes();
   -              bitField0_ |= 0x00000002;
   -              maximum_ = bs;
   -              break;
   -            }
   -            case 24: {
   -              bitField0_ |= 0x00000004;
   -              sum_ = input.readSInt64();
   -              break;
   -            }
   -            case 34: {
   -              com.google.protobuf.ByteString bs = input.readBytes();
   -              bitField0_ |= 0x00000008;
   -              lowerBound_ = bs;
   -              break;
   -            }
   -            case 42: {
   -              com.google.protobuf.ByteString bs = input.readBytes();
   -              bitField0_ |= 0x00000010;
   -              upperBound_ = bs;
   -              break;
   -            }
   -            default: {
   -              if (!parseUnknownField(
   -                  input, unknownFields, extensionRegistry, tag)) {
   -                done = true;
   -              }
   -              break;
   -            }
   -          }
   -        }
   -      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
   -        throw e.setUnfinishedMessage(this);
   -      } catch (java.io.IOException e) {
   -        throw new com.google.protobuf.InvalidProtocolBufferException(
   -            e).setUnfinishedMessage(this);
   -      } finally {
   -        this.unknownFields = unknownFields.build();
   -        makeExtensionsImmutable();
   -      }
   -    }
        public static final com.google.protobuf.Descriptors.Descriptor
            getDescriptor() {
          return 
org.apache.orc.OrcProto.internal_static_orc_proto_StringStatistics_descriptor;
   @@ -2186,7 +2081,8 @@ public final class OrcProto {
    
        private int bitField0_;
        public static final int MINIMUM_FIELD_NUMBER = 1;
   -    private volatile java.lang.Object minimum_;
   +    @SuppressWarnings("serial")
   +    private volatile java.lang.Object minimum_ = "";
        /**
         * <code>optional string minimum = 1;</code>
         * @return Whether the minimum field is set.
   @@ -2234,7 +2130,8 @@ public final class OrcProto {
        }
    
        public static final int MAXIMUM_FIELD_NUMBER = 2;
   -    private volatile java.lang.Object maximum_;
   +    @SuppressWarnings("serial")
   +    private volatile java.lang.Object maximum_ = "";
        /**
         * <code>optional string maximum = 2;</code>
         * @return Whether the maximum field is set.
   @@ -2282,7 +2179,7 @@ public final class OrcProto {
        }
    
        public static final int SUM_FIELD_NUMBER = 3;
   -    private long sum_;
   +    private long sum_ = 0L;
        /**
         * <pre>
         * sum will store the total length of all strings in a stripe
   @@ -2309,7 +2206,8 @@ public final class OrcProto {
        }
    
        public static final int LOWER_BOUND_FIELD_NUMBER = 4;
   -    private volatile java.lang.Object lowerBound_;
   +    @SuppressWarnings("serial")
   +    private volatile java.lang.Object lowerBound_ = "";
        /**
         * <pre>
         * If the minimum or maximum value was longer than 1024 bytes, store a 
lower or upper
   @@ -2372,7 +2270,8 @@ public final class OrcProto {
        }
    
        public static final int UPPER_BOUND_FIELD_NUMBER = 5;
   -    private volatile java.lang.Object upperBound_;
   +    @SuppressWarnings("serial")
   +    private volatile java.lang.Object upperBound_ = "";
        /**
         * <code>optional string upper_bound = 5;</code>
         * @return Whether the upperBound field is set.
   @@ -2448,7 +2347,7 @@ public final class OrcProto {
          if (((bitField0_ & 0x00000010) != 0)) {
            com.google.protobuf.GeneratedMessageV3.writeString(output, 5, 
upperBound_);
          }
   -      unknownFields.writeTo(output);
   +      getUnknownFields().writeTo(output);
        }
    
        @java.lang.Override
   @@ -2473,7 +2372,7 @@ public final class OrcProto {
          if (((bitField0_ & 0x00000010) != 0)) {
            size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, 
upperBound_);
          }
   -      size += unknownFields.getSerializedSize();
   +      size += getUnknownFields().getSerializedSize();
          memoizedSize = size;
          return size;
        }
   @@ -2513,7 +2412,7 @@ public final class OrcProto {
            if (!getUpperBound()
                .equals(other.getUpperBound())) return false;
          }
   -      if (!unknownFields.equals(other.unknownFields)) return false;
   +      if (!getUnknownFields().equals(other.getUnknownFields())) return 
false;
          return true;
        }
    
   @@ -2545,7 +2444,7 @@ public final class OrcProto {
            hash = (37 * hash) + UPPER_BOUND_FIELD_NUMBER;
            hash = (53 * hash) + getUpperBound().hashCode();
          }
   -      hash = (29 * hash) + unknownFields.hashCode();
   +      hash = (29 * hash) + getUnknownFields().hashCode();
          memoizedHashCode = hash;
          return hash;
        }
   @@ -2594,11 +2493,13 @@ public final class OrcProto {
          return com.google.protobuf.GeneratedMessageV3
              .parseWithIOException(PARSER, input, extensionRegistry);
        }
   +
        public static org.apache.orc.OrcProto.StringStatistics 
parseDelimitedFrom(java.io.InputStream input)
            throws java.io.IOException {
          return com.google.protobuf.GeneratedMessageV3
              .parseDelimitedWithIOException(PARSER, input);
        }
   +
        public static org.apache.orc.OrcProto.StringStatistics 
parseDelimitedFrom(
            java.io.InputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
   @@ -2662,32 +2563,23 @@ public final class OrcProto {
    
          // Construct using 
org.apache.orc.OrcProto.StringStatistics.newBuilder()
          private Builder() {
   -        maybeForceBuilderInitialization();
   +
          }
    
          private Builder(
              com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
            super(parent);
   -        maybeForceBuilderInitialization();
   -      }
   -      private void maybeForceBuilderInitialization() {
   -        if (com.google.protobuf.GeneratedMessageV3
   -                .alwaysUseFieldBuilders) {
   -        }
   +
          }
          @java.lang.Override
          public Builder clear() {
            super.clear();
   +        bitField0_ = 0;
            minimum_ = "";
   -        bitField0_ = (bitField0_ & ~0x00000001);
            maximum_ = "";
   -        bitField0_ = (bitField0_ & ~0x00000002);
            sum_ = 0L;
   -        bitField0_ = (bitField0_ & ~0x00000004);
            lowerBound_ = "";
   -        bitField0_ = (bitField0_ & ~0x00000008);
            upperBound_ = "";
   -        bitField0_ = (bitField0_ & ~0x00000010);
            return this;
          }
    
   @@ -2714,31 +2606,35 @@ public final class OrcProto {
          @java.lang.Override
          public org.apache.orc.OrcProto.StringStatistics buildPartial() {
            org.apache.orc.OrcProto.StringStatistics result = new 
org.apache.orc.OrcProto.StringStatistics(this);
   +        if (bitField0_ != 0) { buildPartial0(result); }
   +        onBuilt();
   +        return result;
   +      }
   +
   +      private void buildPartial0(org.apache.orc.OrcProto.StringStatistics 
result) {
            int from_bitField0_ = bitField0_;
            int to_bitField0_ = 0;
            if (((from_bitField0_ & 0x00000001) != 0)) {
   +          result.minimum_ = minimum_;
              to_bitField0_ |= 0x00000001;
            }
   -        result.minimum_ = minimum_;
            if (((from_bitField0_ & 0x00000002) != 0)) {
   +          result.maximum_ = maximum_;
              to_bitField0_ |= 0x00000002;
            }
   -        result.maximum_ = maximum_;
            if (((from_bitField0_ & 0x00000004) != 0)) {
              result.sum_ = sum_;
              to_bitField0_ |= 0x00000004;
            }
            if (((from_bitField0_ & 0x00000008) != 0)) {
   +          result.lowerBound_ = lowerBound_;
              to_bitField0_ |= 0x00000008;
            }
   -        result.lowerBound_ = lowerBound_;
            if (((from_bitField0_ & 0x00000010) != 0)) {
   +          result.upperBound_ = upperBound_;
              to_bitField0_ |= 0x00000010;
            }
   -        result.upperBound_ = upperBound_;
   -        result.bitField0_ = to_bitField0_;
   -        onBuilt();
   -        return result;
   +        result.bitField0_ |= to_bitField0_;
          }
    
          @java.lang.Override
   @@ -2786,29 +2682,29 @@ public final class OrcProto {
          public Builder mergeFrom(org.apache.orc.OrcProto.StringStatistics 
other) {
            if (other == 
org.apache.orc.OrcProto.StringStatistics.getDefaultInstance()) return this;
            if (other.hasMinimum()) {
   -          bitField0_ |= 0x00000001;
              minimum_ = other.minimum_;
   +          bitField0_ |= 0x00000001;
              onChanged();
            }
            if (other.hasMaximum()) {
   -          bitField0_ |= 0x00000002;
              maximum_ = other.maximum_;
   +          bitField0_ |= 0x00000002;
              onChanged();
            }
            if (other.hasSum()) {
              setSum(other.getSum());
            }
            if (other.hasLowerBound()) {
   -          bitField0_ |= 0x00000008;
              lowerBound_ = other.lowerBound_;
   +          bitField0_ |= 0x00000008;
              onChanged();
            }
            if (other.hasUpperBound()) {
   -          bitField0_ |= 0x00000010;
              upperBound_ = other.upperBound_;
   +          bitField0_ |= 0x00000010;
              onChanged();
            }
   -        this.mergeUnknownFields(other.unknownFields);
   +        this.mergeUnknownFields(other.getUnknownFields());
            onChanged();
            return this;
          }
   @@ -2823,17 +2719,55 @@ public final class OrcProto {
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws java.io.IOException {
   -        org.apache.orc.OrcProto.StringStatistics parsedMessage = null;
   +        if (extensionRegistry == null) {
   +          throw new java.lang.NullPointerException();
   +        }
            try {
   -          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
   +          boolean done = false;
   +          while (!done) {
   +            int tag = input.readTag();
   +            switch (tag) {
   +              case 0:
   +                done = true;
   +                break;
   +              case 10: {
   +                minimum_ = input.readBytes();
   +                bitField0_ |= 0x00000001;
   +                break;
   +              } // case 10
   +              case 18: {
   +                maximum_ = input.readBytes();
   +                bitField0_ |= 0x00000002;
   +                break;
   +              } // case 18
   +              case 24: {
   +                sum_ = input.readSInt64();
   +                bitField0_ |= 0x00000004;
   +                break;
   +              } // case 24
   +              case 34: {
   +                lowerBound_ = input.readBytes();
   +                bitField0_ |= 0x00000008;
   +                break;
   +              } // case 34
   +              case 42: {
   +                upperBound_ = input.readBytes();
   +                bitField0_ |= 0x00000010;
   +                break;
   +              } // case 42
   +              default: {
   +                if (!super.parseUnknownField(input, extensionRegistry, 
tag)) {
   +                  done = true; // was an endgroup tag
   +                }
   +                break;
   +              } // default:
   ...
   ```


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