yarn multi-tenant configuration management (CapacityScheduler) hadoop version is 2.7
One: Before multi-tenant implementation, there is only one default queue
Second configuration file m
Category: Opensource
Open-source software (open-source) is a new term that is defined as software whose source code can be used by the public, and the use, modification, and distribution of this software are not restricted by licenses. Open source software is usually copyrighted, and its license may contain such restrictions: deliberate protection of its open source status, notice of authorship, or development control. “Open source” is being registered as a certification mark by public interest software organizations, which is also a means of creating a formal definition of open source.
NHibernate Queryover on iUserType
First of all let me apologize for the length of this article, it is mainly code, so I hope you all bear with me!
I have a scenario dealing with a legacy database, I need to write an IUserType
Insert and query HBase speeds are slower
Surface problem: Inserting and querying HBase is slower
Check the HBase node status and find that it is running normally:
Check the status of accessing the HBase service and find that t
Jetty introduction Handler
Article reference
http://ipjmc.iteye.com/blog /1839999
http://blog.csdn.net/huangmin2050/article/details/7487922
Embedding a jetty service generally involves the following steps ,
Java client for Secure HBase
Hi, I am trying to write a java client for secure hbase.
I want to do kinit from the code itself, because I am using the user group information class.
Can anyone point out where I am wrong?
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Sleep – repeatable reading and second loss update problem
Using a repeatable read isolation level, updates may still be lost (the second lost update problem). For example. In the scenario where the isolation level is set to RR: 1) Transaction t1 reads da
Hibernate – Creating a JPA EntityMananger in Spring Context
I have a JPA/Spring application which uses Hibernate as the JPA provider. In part of the code, I have to manually create DAOs in my application using the new operator, Instead of using Spring DI. W
First, MapReduce basic principle
1. Basic Overview of MapReduce 1. Definition It is a programming framework for distributed computing programs. The core function is to integrate the business logic code written by the user and the
CouchBase and CouchBase Lite differences? [Before it called TouchDB]
What is Couchbase and what is Couchbase Lite? Is there any difference between the two? How can I create couchbase lite on a mobile device and how can I communicate with the server? Did you happe
Project instance and debugging operations started by Jetty Start
Start command:
java -jar %JETTY_HOME%/start.jar (in the base directory or home directory Execution)
Description: %JETTY_HOME% is an environment variable, the value is jetty home directo