hadoop-3.3.0 uploadHDFS.sh具体代码

`uploadHDFS.sh` 是 Hadoop 分发版中用于上传文件到 HDFS (Hadoop Distributed File System) 的脚本，通常是在 Hadoop 配置好环境并启动集群后使用的。这个脚本的具体内容可能会因 Hadoop 版本的不同而有所差异，但基本结构通常是通过 `hadoop fs -put` 命令来执行上传操作。

以下是一个简化版的示例代码片段，假设你已经设置了环境变量 `$HADOOP_HOME` 指向 Hadoop 的安装目录：

#!/bin/bash

# 检查是否设置了 HADOOP_HOME 变量
if [ -z "$HADOOP_HOME" ]; then
  echo "Please set the HADOOP_HOME environment variable to your Hadoop installation directory."
  exit 1
fi

# 确保 hdfs 命令可用
$HADOOP_HOME/bin/hadoop version &> /dev/null || {
  echo "Hadoop not found in $HADOOP_HOME. Please make sure Hadoop is installed and configured correctly."
  exit 1
}

# 定义要上传的本地文件和远程路径
LOCAL_FILE=$1
REMOTE_PATH=$2

# 如果文件不存在，则提示错误
if [ ! -f "$LOCAL_FILE" ]; then
  echo "Local file $LOCAL_FILE does not exist."
  exit 1
fi

# 使用 hdfs put 命令上传文件
$hadoop_home/bin/hadoop fs -put $LOCAL_FILE $REMOTE_PATH

echo "File $LOCAL_FILE has been uploaded to HDFS at path $REMOTE_PATH."

# 相关问题--