📅  最后修改于: 2023-12-03 15:01:06.294000             🧑  作者: Mango
If you are getting an error message that JAVA_HOME is not set and could not be found while trying to start Hadoop-master, it means that the Java environment variable is not set or is set incorrectly on your system. This error usually occurs when you have not installed Java or the installation path of Java is not set correctly.
To fix this error, you need to set the JAVA_HOME
environment variable to the correct path of your Java installation. Here are the steps to do it:
Find the path of your Java installation by typing the following command in your terminal:
which java
This will display the installation path of your Java.
Set the JAVA_HOME
variable by typing the following command in your terminal:
export JAVA_HOME=/path/to/java
Replace /path/to/java
with the actual path of your Java installation.
Verify the JAVA_HOME
variable by typing the following command in your terminal:
echo $JAVA_HOME
This should display the correct path of your Java installation.
Setting the JAVA_HOME
environment variable is essential for running Hadoop-master without any errors. By following the above steps, you can easily fix the JAVA_HOME is not set and could not be found
error and ensure that Hadoop-master runs smoothly on your system.