ORC-2102: [C++] Remove HDFS support

### What changes were proposed in this pull request?

This PR aims to remove HDFS support code from Apache ORC repository.

### Why are the changes needed?

Apache ORC 2.0.1 deprecated HDFS Support to address the following issues.
- #1885
  - #1857
  - #2134

### How was this patch tested?

Pass the CIs.

### Was this patch authored or co-authored using generative AI tooling?

Generated-by: `Gemini 3.1 Pro (High)` on `Antigravity`

This closes #2136 .

Closes #2544 from dongjoon-hyun/ORC-2102.

Authored-by: Dongjoon Hyun <dongjoon@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

Author: dongjoon-hyun

.github/workflows/build_and_test.yml

@@ -155,7 +155,6 @@ jobs:
         cd build
         cmake .. -G "Visual Studio 17 2022" \
           -DCMAKE_BUILD_TYPE=RELEASE \
-          -DBUILD_LIBHDFSPP=OFF \
           -DBUILD_TOOLS=OFF \
           -DBUILD_JAVA=OFF \
           -DANALYZE_JAVA=OFF \

CMakeLists.txt

@@ -41,9 +41,6 @@ option (ANALYZE_JAVA
     "Run static analysis of the Java"
      OFF)
 
-option (BUILD_LIBHDFSPP
-    "Include LIBHDFSPP library in the build process"
-     OFF)
 
 option (BUILD_SPARSEHASH
     "Include sparsehash library in the build process"

c++/include/orc/OrcFile.hh

@@ -135,14 +135,6 @@ namespace orc {
   std::unique_ptr<InputStream> readLocalFile(const std::string& path,
                                              ReaderMetrics* metrics = nullptr);
 
-  /**
-   * Create a stream to an HDFS file.
-   * @param path the uri of the file in HDFS
-   * @param metrics the metrics of the reader
-   */
-  [[deprecated("readHdfsFile is deprecated in 2.0.1")]] std::unique_ptr<InputStream> readHdfsFile(
-      const std::string& path, ReaderMetrics* metrics = nullptr);
-
   /**
    * Create a reader to read the ORC file.
    * @param stream the stream to read

c++/libs/libhdfspp/imported_timestamp

@@ -191,9 +191,6 @@ set(SOURCE_FILES
   Vector.cc
   Writer.cc)
 
-if(BUILD_LIBHDFSPP)
-  set(SOURCE_FILES ${SOURCE_FILES} OrcHdfsFile.cc)
-endif(BUILD_LIBHDFSPP)
 
 if(BUILD_ENABLE_AVX512)
   set(SOURCE_FILES
@@ -212,7 +209,6 @@ target_link_libraries (orc
     $<BUILD_INTERFACE:orc::Snappy>
     $<BUILD_INTERFACE:orc::lz4>
     $<BUILD_INTERFACE:orc::zstd>
-    $<BUILD_INTERFACE:${LIBHDFSPP_LIBRARIES}>
     $<BUILD_INTERFACE:$<TARGET_NAME_IF_EXISTS:orc::sparsehash>>
   )
 
@@ -227,16 +223,12 @@ target_include_directories (orc
   PRIVATE
     ${CMAKE_CURRENT_BINARY_DIR}
     ${CMAKE_CURRENT_SOURCE_DIR}
-    ${LIBHDFSPP_INCLUDE_DIR}
 )
 
 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   target_compile_options(orc PRIVATE -Wall -Wextra $<$<BOOL:${STOP_BUILD_ON_WARNING}>:-Werror>)
 endif ()
 
-if (BUILD_LIBHDFSPP)
-  target_compile_definitions(orc PUBLIC -DBUILD_LIBHDFSPP)
-endif (BUILD_LIBHDFSPP)
 
 if (BUILD_SPARSEHASH)
   target_compile_definitions(orc PUBLIC -DBUILD_SPARSEHASH)

c++/libs/libhdfspp/libhdfspp.tar.gz

@@ -103,15 +103,7 @@ namespace orc {
   }
 
   std::unique_ptr<InputStream> readFile(const std::string& path, ReaderMetrics* metrics) {
-#ifdef BUILD_LIBHDFSPP
-    if (strncmp(path.c_str(), "hdfs://", 7) == 0) {
-      return orc::readHdfsFile(std::string(path), metrics);
-    } else {
-#endif
-      return orc::readLocalFile(std::string(path), metrics);
-#ifdef BUILD_LIBHDFSPP
-    }
-#endif
+    return orc::readLocalFile(std::string(path), metrics);
   }
 
   DIAGNOSTIC_POP

c++/libs/libhdfspp/pull_hdfs.sh

@@ -702,70 +702,4 @@ if(BUILD_SPARSEHASH)
   endblock()
 endif()
 
-# ----------------------------------------------------------------------
-# LIBHDFSPP
-if(BUILD_LIBHDFSPP)
-  set (BUILD_LIBHDFSPP FALSE)
-  if(ORC_CXX_HAS_THREAD_LOCAL)
-    find_package(CyrusSASL)
-    find_package(OpenSSL)
-    find_package(Threads)
-    if (CYRUS_SASL_SHARED_LIB AND OPENSSL_LIBRARIES)
-      set (BUILD_LIBHDFSPP TRUE)
-      set (LIBHDFSPP_PREFIX "${THIRDPARTY_DIR}/libhdfspp_ep-install")
-      set (LIBHDFSPP_INCLUDE_DIR "${LIBHDFSPP_PREFIX}/include")
-      set (LIBHDFSPP_STATIC_LIB_NAME hdfspp_static)
-      set (LIBHDFSPP_STATIC_LIB "${LIBHDFSPP_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}${LIBHDFSPP_STATIC_LIB_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}")
-      set (LIBHDFSPP_SRC_URL "${PROJECT_SOURCE_DIR}/c++/libs/libhdfspp/libhdfspp.tar.gz")
-      set (LIBHDFSPP_CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-                                -DCMAKE_INSTALL_PREFIX=${LIBHDFSPP_PREFIX}
-                                -DPROTOBUF_INCLUDE_DIR=${PROTOBUF_INCLUDE_DIR}
-                                -DPROTOBUF_LIBRARY=${PROTOBUF_STATIC_LIB}
-                                -DPROTOBUF_PROTOC_LIBRARY=${PROTOC_STATIC_LIB}
-                                -DPROTOBUF_PROTOC_EXECUTABLE=${PROTOBUF_EXECUTABLE}
-                                -DOPENSSL_ROOT_DIR=${OPENSSL_ROOT_DIR}
-                                -DCMAKE_C_FLAGS=${EP_C_FLAGS}
-                                -DBUILD_SHARED_LIBS=OFF
-                                -DHDFSPP_LIBRARY_ONLY=TRUE
-                                -DBUILD_SHARED_HDFSPP=FALSE)
-
-      if (BUILD_POSITION_INDEPENDENT_LIB)
-        set(LIBHDFSPP_CMAKE_ARGS ${LIBHDFSPP_CMAKE_ARGS} -DCMAKE_POSITION_INDEPENDENT_CODE=ON)
-      endif ()
-
-      ExternalProject_Add (libhdfspp_ep
-        DEPENDS orc::protobuf
-        URL ${LIBHDFSPP_SRC_URL}
-        LOG_DOWNLOAD 0
-        LOG_CONFIGURE 0
-        LOG_BUILD 0
-        LOG_INSTALL 0
-        BUILD_BYPRODUCTS "${LIBHDFSPP_STATIC_LIB}"
-        CMAKE_ARGS ${LIBHDFSPP_CMAKE_ARGS})
-
-      orc_add_built_library(libhdfspp_ep libhdfspp ${LIBHDFSPP_STATIC_LIB} ${LIBHDFSPP_INCLUDE_DIR})
-
-      set (LIBHDFSPP_LIBRARIES
-           libhdfspp
-           ${CYRUS_SASL_SHARED_LIB}
-           ${OPENSSL_LIBRARIES}
-           ${CMAKE_THREAD_LIBS_INIT})
-
-    elseif(CYRUS_SASL_SHARED_LIB)
-      message(STATUS
-      "WARNING: Libhdfs++ library was not built because the required OpenSSL library was not found")
-    elseif(OPENSSL_LIBRARIES)
-      message(STATUS
-      "WARNING: Libhdfs++ library was not built because the required CyrusSASL library was not found")
-    else ()
-      message(STATUS
-      "WARNING: Libhdfs++ library was not built because the required CyrusSASL and OpenSSL libraries were not found")
-    endif(CYRUS_SASL_SHARED_LIB AND OPENSSL_LIBRARIES)
-  else(ORC_CXX_HAS_THREAD_LOCAL)
-    message(STATUS
-    "WARNING: Libhdfs++ library was not built because the required feature
-    thread_local storage is not supported by your compiler. Known compilers that
-    support this feature: GCC, Visual Studio, Clang (community version),
-    Clang (version for iOS 9 and later), Clang (version for Xcode 8 and later)")
-  endif(ORC_CXX_HAS_THREAD_LOCAL)
-endif(BUILD_LIBHDFSPP)
+