[feature](refactor) New Spark Load (#214)

Currently, Spark Load is integrated into the Doris core, which brings the following problems:

Due to the reliance on Spark-related dependencies, the security issues of Spark itself will cause security issues in Doris
When modifying the content of Spark ETL, it also depends on the version release of Doris, which is not conducive to rapid expansion and problem repair

The reliance on Hadoop ecosystem also increases the complexity of the Doris system
Therefore, separating the task submission, management, and Spark DPP processing of Spark Load from the Doris core will help reduce the complexity of the Doris core and also help unify Doris's Spark ecosystem tools.

.gitignore

@@ -12,6 +12,21 @@ dependency-reduced-pom.xml
 target
 .flattened-pom.xml
 
+spark-load/.idea/
+spark-load/target
+spark-load/spark-load-core/dependency-reduced-pom.xml
+spark-load/spark-load-core/output/
+spark-load/spark-load-core/target/
+spark-load/spark-load-core/.idea/
+spark-load/spark-load-dist/dependency-reduced-pom.xml
+spark-load/spark-load-dist/target/
+spark-load/spark-load-dpp/dependency-reduced-pom.xml
+spark-load/spark-load-dpp/.flattened-pom.xml
+spark-load/spark-load-dpp/target/
+spark-load/spark-load-common/dependency-reduced-pom.xml
+spark-load/spark-load-common/target/
+
+
 ### Java template
 # Compiled class file
 *.class

spark-doris-connector/spark-doris-connector-it/src/test/java/org/apache/doris/spark/sql/TestSparkConnector.scala

@@ -19,7 +19,8 @@ package org.apache.doris.spark.sql
 
 import org.apache.spark.sql.SparkSession
 import org.apache.spark.{SparkConf, SparkContext}
-import org.junit.{Ignore, Test}
+import org.junit.Ignore
+import org.junit.Test
 
 // This test need real connect info to run.
 // Set the connect info before comment out this @Ignore

spark-load/build.sh

@@ -0,0 +1,175 @@
+#!/usr/bin/env bash
+# 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.
+
+##############################################################
+# This script is used to compile Spark-Load
+# Usage:
+#    sh build.sh
+#
+##############################################################
+
+# Bugzilla 37848: When no TTY is available, don't output to console
+have_tty=0
+# shellcheck disable=SC2006
+if [[ "`tty`" != "not a tty" ]]; then
+    have_tty=1
+fi
+
+# Bugzilla 37848: When no TTY is available, don't output to console
+have_tty=0
+# shellcheck disable=SC2006
+if [[ "`tty`" != "not a tty" ]]; then
+    have_tty=1
+fi
+
+ # Only use colors if connected to a terminal
+if [[ ${have_tty} -eq 1 ]]; then
+  PRIMARY=$(printf '\033[38;5;082m')
+  RED=$(printf '\033[31m')
+  GREEN=$(printf '\033[32m')
+  YELLOW=$(printf '\033[33m')
+  BLUE=$(printf '\033[34m')
+  BOLD=$(printf '\033[1m')
+  RESET=$(printf '\033[0m')
+else
+  PRIMARY=""
+  RED=""
+  GREEN=""
+  YELLOW=""
+  BLUE=""
+  BOLD=""
+  RESET=""
+fi
+
+echo_r () {
+    # Color red: Error, Failed
+    [[ $# -ne 1 ]] && return 1
+    # shellcheck disable=SC2059
+    printf "[%sDoris%s] %s$1%s\n"  $BLUE $RESET $RED $RESET
+}
+
+echo_g () {
+    # Color green: Success
+    [[ $# -ne 1 ]] && return 1
+    # shellcheck disable=SC2059
+    printf "[%sDoris%s] %s$1%s\n"  $BLUE $RESET $GREEN $RESET
+}
+
+echo_y () {
+    # Color yellow: Warning
+    [[ $# -ne 1 ]] && return 1
+    # shellcheck disable=SC2059
+    printf "[%sDoris%s] %s$1%s\n"  $BLUE $RESET $YELLOW $RESET
+}
+
+echo_w () {
+    # Color yellow: White
+    [[ $# -ne 1 ]] && return 1
+    # shellcheck disable=SC2059
+    printf "[%sDoris%s] %s$1%s\n"  $BLUE $RESET $WHITE $RESET
+}
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false
+os400=false
+# shellcheck disable=SC2006
+case "`uname`" in
+CYGWIN*) cygwin=true;;
+OS400*) os400=true;;
+esac
+
+# resolve links - $0 may be a softlink
+PRG="$0"
+
+while [[ -h "$PRG" ]]; do
+  # shellcheck disable=SC2006
+  ls=`ls -ld "$PRG"`
+  # shellcheck disable=SC2006
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    PRG="$link"
+  else
+    # shellcheck disable=SC2006
+    PRG=`dirname "$PRG"`/"$link"
+  fi
+done
+
+# Get standard environment variables
+# shellcheck disable=SC2006
+ROOT=$(cd "$(dirname "$PRG")" &>/dev/null && pwd)
+export DORIS_HOME=$(cd "$ROOT/../" &>/dev/null && pwd)
+
+. "${DORIS_HOME}"/env.sh
+
+# include custom environment variables
+if [[ -f ${DORIS_HOME}/custom_env.sh ]]; then
+    . "${DORIS_HOME}"/custom_env.sh
+fi
+
+selectSpark() {
+  echo 'Spark-Load supports multiple versions of spark. Which version do you need ?'
+  select spark in "2.x" "3.x" "other"
+  do
+    case $spark in
+      "2.x")
+        return 1
+        ;;
+      "3.x")
+        return 2
+        ;;
+      *)
+        echo "invalid selected, exit.."
+        exit 1
+        ;;
+    esac
+  done
+}
+
+SPARK_VERSION=0
+selectSpark
+SparkVer=$?
+if [ ${SparkVer} -eq 1 ]; then
+    SPARK_VERSION="spark2"
+    SCALA_VERSION="scala_2.11"
+elif [ ${SparkVer} -eq 2 ]; then
+    SPARK_VERSION="spark3"
+    SCALA_VERSION="scala_2.12"
+fi
+
+echo_g " spark load run based on : ${SPARK_VERSION} and ${SCALA_VERSION}"
+echo_g " build starting..."
+
+${MVN_BIN} clean package -P${SPARK_VERSION},${SCALA_VERSION} "$@"
+
+EXIT_CODE=$?
+if [ $EXIT_CODE -eq 0 ]; then
+  DIST_DIR=${DORIS_HOME}/dist
+  [ ! -d "$DIST_DIR" ] && mkdir "$DIST_DIR"
+  dist_jar=$(ls "${ROOT}"/target | grep "spark-load-")
+  rm -rf "${DIST_DIR}"/"${dist_jar}"
+  cp "${ROOT}"/target/"${dist_jar}" "$DIST_DIR"
+
+  echo_g "*****************************************************************"
+  echo_g "Successfully build Spark-Load"
+  echo_g "dist: $DIST_DIR/$dist_jar "
+  echo_g "*****************************************************************"
+  exit 0;
+else
+  echo_r "Failed build Spark-Load"
+  exit $EXIT_CODE;
+fi