我正在尝试使用#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include<unistd.h>
void timer_handler (int signum)
{
static int count = 0;
printf ("timer expired %d times\n", ++count);
}
int main ()
{
struct sigaction sa;
struct itimerval timer;
memset (&sa, 0, sizeof (sa));
sa.sa_handler = &timer_handler;
sigaction (SIGALRM, &sa, NULL);
timer.it_value.tv_sec = 0;
timer.it_value.tv_usec = 250000;
/* ... and every 250 msec after that. */
timer.it_interval.tv_sec = 1;
timer.it_interval.tv_usec = 250000;
/* Start a virtual timer. It counts down whenever this process is
executing. */
setitimer (ITIMER_REAL, &timer, NULL);
/* Do busy work.
*/
int i=0;
while(1){
scanf("%d",&i); //****Not waiting for input****
printf("hello");
}
}
组件MySQL将HDFS数据库导入我的Sqoop import，但我在日志文件中收到此错误：
Pentaho Kettle但是，我的hadoop文件系统很干净，所以这个错误是不可能的！ 我不明白会发生什么。