diff --git a/cpp/src/parquet/encodings/plain-encoding.h b/cpp/src/parquet/encodings/plain-encoding.h
index 06d237ac09876..03f5940c3c74c 100644
--- a/cpp/src/parquet/encodings/plain-encoding.h
+++ b/cpp/src/parquet/encodings/plain-encoding.h
@@ -156,7 +156,12 @@ class PlainEncoder<Type::BOOLEAN> : public Encoder<Type::BOOLEAN> {
   explicit PlainEncoder(const ColumnDescriptor* descr) :
       Encoder<Type::BOOLEAN>(descr, parquet::Encoding::PLAIN) {}
 
-  virtual size_t Encode(const std::vector<bool>& src, int num_values,
+  virtual size_t Encode(const bool* src, int num_values, uint8_t* dst) {
+    throw ParquetException("this API for encoding bools not implemented");
+    return 0;
+  }
+
+  size_t Encode(const std::vector<bool>& src, int num_values,
       uint8_t* dst) {
     size_t bytes_required = BitUtil::RoundUp(num_values, 8) / 8;
     BitWriter bit_writer(dst, bytes_required);
diff --git a/cpp/src/parquet/reader.cc b/cpp/src/parquet/reader.cc
index a90bafb796a93..d3bc0a66075b6 100644
--- a/cpp/src/parquet/reader.cc
+++ b/cpp/src/parquet/reader.cc
@@ -199,7 +199,7 @@ void ParquetFileReader::ParseMetaData() {
 
   uint32_t metadata_len = *reinterpret_cast<uint32_t*>(footer_buffer);
   size_t metadata_start = filesize - FOOTER_SIZE - metadata_len;
-  if (metadata_start < 0) {
+  if (FOOTER_SIZE + metadata_len > filesize) {
     throw ParquetException("Invalid parquet file. File is less than file metadata size.");
   }