In the previous blog, we introduced the hadoop Job scheduler. We know that jobtracker and tasktracker are the two core parts in the hadoop job scheduling process. The former is responsible for scheduling and dispatching MAP/reduce jobs, the latter is responsible for the actual execution of MAP/reduce jobs and communication between them through the RPC mechanism.
, whether it is open source or commercial ETL tools have their own job scheduling, but from the use of flexibility and simplicity, it is not as good as the third-party professional to do batch job scheduling tools. Since they are all tools to facilitate the use of people, why not use better tools to relieve our workloa
First, quartz learning Java Framework Introduction: Quartz from beginner to advancedHttp://edu.yesky.com/edupxpt/233/2209233.shtmlExample: http://javacrazyer.iteye.com/blog/675460http://blog.csdn.net/lotusyangjun/article/details/6450421Official website: http://www.quartz-scheduler.orgSecond, Scheduledthreadpoolexecutor studyJDK5 after Java introduced the Scheduledthreadpoolexecutor, theoretically no longer need to use a timer The difference between a timer and a scheduledthreadpoolexecutor :http
Quartz. NET open-source Job scheduling framework series (4): Plugin Job, quartz. netplugin
What if we want to dynamically modify the binding relationship between the Job and Trigger while the Quartz. NET Job is running and modify
auxiliary tools without looking at the code of the other website, so when I analyzed all the logic clearly, I also learned some development experience from my predecessors (web programmers. My friends who have read my blog will know that I have made client support programs for kaixin001 and haomu, a well-known SNS website in China. This is not just a matter of time, instead, we will learn the design patterns of different programmers in this process. Reverse reasoning and analysis are a complex
groupsDescription (optional) trigger descriptionJob-name (required) The task name to be dispatched, the job-name must be exactly the same as the name in the corresponding job nodeJob-group (optional) the group to which the dispatch task (Job) belongs, which must be exactly the same as the group in the jobStart-time (optional) task start execution time UTC time,
Quartz.net Open Source Job scheduling framework using a detailed prefaceThe Quartz.net job scheduling framework is a. NET extended ported version of the Quartz Scheduler project developed by the great organization Opensymphony. Supports cron-like expressions, clusters, datab
);//you first need to find the Iset collection of Jobkey based on the group name. groupmatcher. Groupequals (groupName);//Note: This is not the isetquartz.collection.isetScheduler. Getjobkeys (matcher);//using enumeration objects to loop through lookupsvarEn =keys. GetEnumerator (); while(en. MoveNext ()) {stringrowID = en. Current.Name.Replace ("Reporttime",""); if(dt. Select ("id= '"+ rowID +"'"). Length = =0) {Loghelper.addlog ("Timing Module","detects that the schedule configuration informat
Quartz.net is a widely used open source job scheduling framework that is easily used in WinForm and ASP. NET applications because it is created in the C # language. Quartz.net offers great flexibility but simplicity. Developers can use it to quickly create and execute an automated job. Quartz.net has many features, suc
Quartz. NET open-source job scheduling framework series, quartz.net framework
Quartz. NET is a widely used open-source job scheduling framework. It is created in C # and can be conveniently used in winform and asp.net application
In front of the introduction to the Quartz.net Open source job scheduling framework and Cron Trigger, this time continue this series, this time to discuss how the job in quartz.net through the execution context (execution Contex) for parameter passing, Some parameters want to save the state what to do with it. You can
./***********************************************************************/* Open source China is the open source Chinese Community recruitment service Platform, focused on providing developers with job-seeking services./*******************************************************
If you like Python, several open-source projects that you don't know about, python open-source projects1. Trac
Trac has powerful bug management functions and integrates Wiki for document management. It also supports the code mana
Disque is a distributed memory message agent Salvatore Sanfilippo, the father of Redis, is a new open source. It adapts to the "Redis as Job queue" scenario, but employs a dedicated, standalone, extensible, fault-tolerant design that combines the simplicity and performance of Redis with the C language as a non-blocking network server.Redis the author Salvatore Sa
Comparison between six open-source frameworks of Python and six open-source frameworks of Python
Python is a dynamic and object-oriented language. It was initially designed as an object
Quartz. NET open-source job scheduling framework series (5): AdoJobStore stores jobs to databases,
Quartz. the core elements of NET job scheduling are schedgger, trigger, and job. trigger (the element used to define the scheduling time, that is, the time rule to execute the
Quartz. net Is an open-source job scheduling framework, which is Opensymphony Of Quartz API Of . Net Port, it uses C # Can be used Winform And Asp.net Application. It provides great flexibility without sacrificing simplicity. You can use it to create simple or complex scheduling for executing a job. It has
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.