异常如下所示

java.io.IOException: Too many open files
    at java.lang.ProcessManager.exec(Native Method)
    at java.lang.ProcessManager.exec(ProcessManager.java:209)
    at java.lang.Runtime.exec(Runtime.java:174)
    at java.lang.Runtime.exec(Runtime.java:247)
    at java.lang.Runtime.exec(Runtime.java:190)

原代码如下所示

public static void executeCommand(String command){  
    Process process = null;
    try {  
        process = Runtime.getRuntime().exec(command);
    } catch(Exception exception){  
      exception.printStackTrace();  
      throw exception;  
    }
} 

添加以下代码

finally {
    if(process!=null){
        process.destroy();
    }
}