设置参数hbase.rpc.timeout <property><name>hbase.regionserver.lease.period</name><value>180000</value></property> <property> <name>zookeeper.session.timeout</name> <value>120000</value> </pro…

1. Cassandra is quicker than postgre and have lower change to lose data. Cassandra doesn't have foreign keys, locking mechanism and etcs, so that it's quicker on writes. 2. Everything in cassandra is a write. Insert/update/delete is also write. 3. Se…

总结 1. 502没有收到相应,或者收到了但不及时? cannot get a response in time 540收到了无效的响应 received an invalid response from the upstream server, HTTP/1.1: Status Code Definitions https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10 10.5 Server Error 5xx Response…

http://www.codeproject.com/Articles/552/Using-Worker-Threads Introduction Worker threads are an elegant solution to a number of problems about concurrent processing; for example, the need to keep the GUI active while a computation is being performed.…

As you know, JavaScript is the number one programming language in the world, the language of the web, of mobile hybrid apps (like PhoneGap or Appcelerator), of the server side (like NodeJS or Wakanda) and has many other implementations. It’s also the…

原文来自于:http://flippinawesome.org/2013/12/23/45-useful-javascript-tips-tricks-and-best-practices/ 1 – Don’t forget var keyword when assigning a variable’s value for the first time. Assignment to an undeclared variable automatically results in a global…

In this Document   Symptoms   Changes   Cause   Solution   References APPLIES TO: Oracle Applications Technology Stack - Version 11.5.10.2 to 12.1.3 [Release 11.5.10 to 12.1]Information in this document applies to any platform. SYMPTOMS *** Checked f…

相关文章:搭建 RabbitMQ Server 高可用集群 具体错误信息: 2018-05-04 11:21:48.116 ERROR 60848 --- [.168.0.202:8001] o.s.a.r.c.CachingConnectionFactory : Channel shutdown: connection error 2018-05-04 11:21:48.116 ERROR 60848 --- [.168.0.202:8001] o.s.a.r.c.CachingConnect…

    线程:     什么是线程? 线程是操作系统能够进行运算调度的最小单位.它被包含在进程之中,是进程中的实际运作单位.一条线程指的是进程中一个单一顺序的控制流,一个进程中可以并发多个线程,每条线程并行执行不同的任务 每一个程序的内存是独立的,互相不能直接访问.     进程: 以一个整体的形式暴露给操作系统管理,里面包含对各种资源的调用,内存的对各种资源管理的集合就可以称为进程.进程本身是不可以执行的,只是一堆指令,操作系统是线程执行的. 表面看进程在执行,其实是线程在执行,一个进程至少包…

<45 Useful JavaScript Tips, Tricks and Best Practices> http://flippinawesome.org/2013/12/23/45-useful-javascript-tips-tricks-and-best-practices/ 1 – Don’t forget var keyword when assigning a variable’s value for the first time. Assignment to an unde…

https://troubleshootingsql.com/tag/stack-dump/ Debugging that latch timeout Posted on August 26, 2011 by Amit Banerjee             6 Votes My last post of debugging an assertion didn’t have any cool debugging tips since there is not much that you can…

原文:https://colobu.com/2014/09/23/45-Useful-JavaScript-Tips,-Tricks-and-Best-Practices/ 目录 [−] 列表 第一次给变量赋值时莫忘使用 var关键字. 使用 === 而不是 == undefined, null, 0, false, NaN, '' (empty string) 都是false. 行尾使用分号 创建对象的构造函数 使用 typeof, instanceof 和 constructor要万分小心.…

grpc/connection-backoff.md at master · grpc/grpc https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md GRPC Connection Backoff Protocol When we do a connection to a backend which fails, it is typically desirable to not retry immediately…

我个人用docker搭建了一套日志分析平台:ELK+Filebeat 在正常跑了半个多月之后,Kibana刷新日志时突然发现日志不在更新了,停在某个时刻,就再也没有新log. 首先我查看了elk,log都是正常的,没有什么问题.然后我到filebeat上,看到了如下的log: 也就是说filebeat无法连接往logstash端口发送数据了. 以下整理了我排查的过程,自己作为一个总结,同时也希望能给初学者一些参考. 一.telnet查看网络通不通 # telnet ip 5044 是相通的.  …

Android Weekly Issue #233 November 27th, 2016 Android Weekly Issue #233 本期内容包括: 用Mockito做RxJava的单元测试; Android开发中的命令行使用; Android 7.1的App Shortcuts; 自定义View的绘制; 用Firebase的Remote Config进行feature逐步分发; APK分析工具的使用, APK瘦身讨论; RxJava处理网络请求和缓存; presenter的设计; 用…

Today we troubleshooting a lot of network issue by using commands like: ping <ip>/<computername> netstat -na telnet <ip>/<computername> <port> 特此列出一些常用的网络命令 网络命令 ping用法: ping [-t] [-a] [-n count] [-l size] [-f] [-i TTL] [-v T…

问题产生 这两天业务系统在redis的使用过程中,当并行客户端数量达到200+之后,产生了大量timeout异常,典型的异常信息如下: Timeout performing HVALS Parser2#Hash#VersionState, inst: 1, mgr: ExecuteSelect, err: never, queue: 2, qu: 0, qs: 2, qc: 0, wr: 0, wq: 0, in: 0, ar: 0, clientName: GS-SERVER-2894, IO…

SSH: We can set a timeout interval for ssh client who are idle or in inactive state. As soon as the idele user will reach the timeout interval, they will be logged off from server automatically To set this up, you just need to perform some simple ste…

Bug 11775332  cluvfy fails with PRVF-5636 withDNS response timeout error but error text is not clear Thisnote gives a brief overview of bug 11775332.   The content was last updated on:17-JUN-2013  Click here fordetails of each of the sections below.…

issue 1: 使用expdp时遭遇ora-31650 D:\oracle\diag\rdbms \trace>expdp \"/ as sysdba\"  schemas=JUSTIN dumpfile=JUSTIN_120803.dmp directory=datapumpdir Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production With th…

Android Weekly Issue #250 March 26th, 2017 Android Weekly Issue #250. 本期内容: 好几篇关于Android O预览版的文章; JUnit 5的动态测试; 作为团队里唯一的Android开发如何学习和工作; Support库新推出的基于物理的动画API: SpringAnimation; Uber Rider项目重构中关于依赖注入的scope层级的改动; Kotlin和RxJava的简洁性. ARTICLES & TUTORIA…

error msg: HttpClient throws TaskCanceledException on timeout HttpClient is throwing a TaskCanceledException on timeout in some circumstances. This is happening for us when the server is under heavy load. We were able to work around by increasing the…

笔者最近在做产品,其中一个环节用到ping测试主机是否在线. 开发环境:Windows 7 64bit+JDK1.8 x64 以下是检测主机是否在线,开发环境中测试通过 public static boolean hostAvailabilityCheck(String host,int timeout){ try { InetAddress inet = InetAddress.getByName(host); System.out.println("Sending Ping Request…

https://github.com/alibaba/druid/releases/tag/1.1.8问题已修复,请使用新版本 xhhwc commented on 21 Dec 2017 1.1.6版本Druid连接MSSQL Server 2008 R2报错:com.microsoft.sqlserver.jdbc.SQLServerException: The query timeout value -1 is not valid.经测试1.1.5版本的Druid无此问题:而1.1.6版本…

1. Overview This tutorial will show how to configure a timeout with the Apache HttpClient 4. If you want to dig deeper and learn other cool things you can do with the HttpClient – head on over to the main HttpClient tutorial. 2. Configure Timeouts vi…

原版:http://www.cubrid.org/blog/dev-platform/understanding-jdbc-internals-and-timeout-configuration 中文版: http://www.cnblogs.com/iceJava/p/4497763.html 备注:阅读了一遍,发现作者有蛮多重要的笔误,大家阅读的时候仔细点. An application with a proper JDBC timeout can cut down the failure…

不多说,直接上干货! 问题详情 关于怎么启动oozie,我这里不多赘述. Oozie的详细启动步骤(CDH版本的3节点集群) 然后,我在查看 [hadoop@bigdatamaster logs]$ tail -n oozie.log 时,报错提示,如下 [hadoop@bigdatamaster logs]$ tail -n oozie.log -- ::, WARN ConfigurationService: - SERVER[bigdatamaster] Invalid configura…

Forms authentication timeout vs sessionState timeout They are different things. The Forms Authentication Timeout value sets the amount of time in minutes that the authentication cookie is set to be valid, meaning, that after value number of minutes,…

事件起因 昨天有同事找我到,说他搭建的 XXL-JOB 任务调度系统不能工作了,调用总是出错(服务端返回 500)希望我能帮忙处理一下,不过说实话我也没有搭建过 XXL-JOB 的经验,但是既然同事请求了,就只能硬着头皮帮忙一起看下,解决的过程还算比较顺利,但是发现网上这块的资料很少,所以打算把解决过程用博客记录下来,希望可以帮助到遇到同样问题的同学们 解决过程 同事跟我说起初怀疑是 Shiro 拦截了定时任务的请求,但是他注释了 Shiro 相关的代码后,XXL-JOB 的请求还是无法成功(请…

产生worker timeout 的背景 while 1: ..... time.sleep(1) gunicorn运行起来,只等待了30s,就卡住了,没报任何异常或err,查了gunicorn 官方文档,原来是线程默认等待30s 就kill 掉,再restart http://docs.gunicorn.org/en/stable/settings.html timeout -t INT, --timeout INT 30 Workers silent for more than this m…