暑期实习两个月的其中一个任务是:如何在设计中加入断言?以及断言的基本语法.三种应用场景下的断言(如FIFO.FSM.AXI4-lite总线).参考书籍:<System Verilog Assertion 应用指南> 一.SVA介绍 1.1断言的定义 An assertion is a statement that a given property is required to be true, and a directive to verification tools to verify th
spark-shell不支持yarn cluster,以yarn client方式启动 spark-shell --master=yarn --deploy-mode=client 启动日志,错误信息如下 其中"Neither spark.yarn.jars nor spark.yarn.archive is set, falling back to uploading libraries under SPARK_HOME",只是一个警告,官方的解释如下: 大概是说:如果 spark.
MySQL root密码重置报错:mysqladmin: connect to server at 'localhost' failed的解决方案 1 登陆失败,mysqladmin修改密码失败 [root@mysql var]# mysqladmin -u root password '123456' mysqladmin: connect to server at 'localhost' failed error: 'Access denied for user 'root'@'loc
一.问题: 在使用Hive0.11进行select查询的时候报: hive,),site from zhifu; Total MapReduce jobs Launching Job out In order to change the average load for a reducer (in bytes): set hive.exec.reducers.bytes.per.reducer=<number> In order to limit the maximum number of r
2016/9/6补充 初始化报错: # /usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/data/mysqldb/ Installing MySQL system tables...2016-09-06 17:29:16 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Plea
-- ==================================================================== -- mysqladmin: connect to server at 'localhost' failed的解决方案! -- ==================================================================== 1 登陆失败,mysqladmin修改密码失败 [root@mysql var]# m
1.执行Spark运行在yarn上的命令报错 spark-shell --master yarn-client,错误如下所示: // :: ERROR SparkContext: Error initializing SparkContext. org.apache.spark.SparkException: Yarn application has already ended! It might have been killed or unable to launch application
zabbix报错 https://www.cnblogs.com/losbyday/category/876878.html作者总结的很全棒 1.在启动zabbix-agent 时系统日志输出 PID file /run/zabbix/zabbix_agentd.pid not readable (yet?) after star zabbix-agent.service never wrote its PID file. Failing 重启zabbix-agent服务依旧不能正常启动,查看/
本文继成上一篇通过hive分析nginx日志文章,详情参考下面链接: http://www.cnblogs.com/wcwen1990/p/7066230.html 接着来: 创建业务子表: drop table if exists chavin.nginx_access_log_comm; create table if not exists chavin.nginx_access_log_comm( host STRING, time STRING, request STRING, refe
任务一直报错 现象比较奇怪,部分任务可以正常跑,部分问题报错 报错信息如下: Ended Job = job_1527476268558_132947 with exception 'java.io.IOException(java.net.ConnectException: Call From xxx/xxx to xxx:10020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more detail
# 故障描述: hive > , ) as uuid, count(distinct(request_body["uuid"])) as count from log_bftv_api where year= and month= and day= and request_body[ group by order by uuid; # hive 执行该HQL语句时报错信息如下:( 数据量小的时候没有问题 ) # 报错信息: MapReduce Total cumulative C
在一台ubuntu测试机器上启动一个mysql实例,本来应该是一件很简单的事情, 启动的时候却报错了: mysqld_safe --defaults-file=/etc/mysql/my3307.cnf 160218 15:45:13 mysqld_safe Can't log to error log and syslog at the same time. Remove all --log-error configuration options for --syslog to take