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Tags: MONGO hadoop Distributed File System hive ETLReference article: Mongo Hadoop connector Https://github.com/mongodb/mongo-hadoop wiki https://github.com/mongodb/mongo-hadoop/ Wiki ppt http://www.slideshare.net/mongodb/hadoop-webinar?from_embed_lead_cta=truetracking_id= 167b463f3b941754 Tutorial http://docs.mongodb.org/ecosystem/tools/hadoop/The steps for deployment are simple and are summarized as follows: 1: Download wget https://github.com/mongo

other. Expand your Reading (English): What is a data scientist with a unicorn type? : Do not know why now what "unicorn" type of this concept will be so popular, enterprises also love to call Unicorn, the industry also called Unicorn. But why a unicorn, I first thought of the wizard series game. (Cover face ~) Top Data Analytics tools for business: Ten tools for commercial analysis, highly recommended!!! Data science:bridging the Business IT Gap: The second part of the m

Java 8 has been out for a long time, because I have been doing Ruby has no time to study, take advantage of the empty tidy upHttp://www.oracle.com/technetwork/java/javase/8-whats-new-2157071.htmlHere we mainly look at the new features related to programming languages:Lambda expression:The problem with anonymous classes now is that when an anonymous class is implemented very simply, such as an interface that contains only an abstract method, its anonym

for a long time. * Most methods of acquiring locks on ReaderWriterLock use a timeout value. Use timeouts to avoid deadlocks in your application. * If you do not use timeouts, these two threads will have a deadlock. * Citation Link: http://msdn.microsoft.com/zh-cn/library/system.threading.readerwriterlock (v=vs.80). aspx * * 3. Other links* Http://tinythreadsafecache.codeplex.com/SourceControl/latest#TinyThreadSafeCache.cs* http://www.grumpydev.com/2010/02/25/thread-safe-dictionarytkeytv

1#!/bin/Bash2 3#shell使用的熟练成都反映用户对Unix/how proficient Linux is used4 #shell There are two ways to execute commands: Interactive and batch processing5#常见的shell脚本解释器有bash,SH, CSH, etc.6#chmod+x./hello.SH#使脚本具有执行权限7#./hello.SH#执行脚本8 9 #交互输入Ten Echo "Whats your name?" One Read person A Echo "Hello, $person" - - #变量 definition does not add $, reference to add $ theMyname="shiqing" - Echo${myname} - - #特殊变量 + Echo "filename:$0" - Echo "First parameter:$1"

There are several ways to find a string in Python, usually with Re.match/search or Str.findUse an example to illustrate the efficiency of the various methods as follows:From Timeit import Timeitimport redef Find (String, text): if String.find (text) >-1: passdef re_find (string, t EXT): if Re.match (text, string): passdef Best_find (String, text): if text in string: passprint Timeit ( "Find (String, text)", "from __main__ import find; string= ' Lookforme '; text= ' l

, $this, self difference] (https://stackoverflow.com/questions/4718808/php-can-static-replace-self)* Private, protected, public, final difference* OOP Ideas* Abstract classes, interfaces use the scene separately* [Trait is something] (http://php.net/manual/zh/language.oop5.traits.php)* [Echo, Print, Print_r difference (the difference between the expression and the statement)] (https://stackoverflow.com/questions/1647322/ whats-the-difference-between-e

record, but saw the answer, only then found oneself formerly wrong. I used to think that no modifier is the same as private, and if you don't add modifiers to the variable, Java defaults to private. StackOverflow Link: http://stackoverflow.com/questions/215497/ In-java-whats-the-difference-between-public-default-protected-and-privateColumn Introduction:very like StackOverflow, can always find a solution to the problem of incurable diseases. Accidenta

There is no difference between rebase and merge for two branches, but rebase is cleaner because log hisitory is linear, but a commit is not necessarily sorted by date, but a local commit is always behind. History becomes more complex after the merge, but the commit is sorted by date, and the StackOverflow has a good illustration: Http://stackoverflow.com/questions/16666089/whats-the-difference-between-git-merge-and-git-rebase This blog says that the

Today began to look at Redis's source code, which declares the following function in the simplest data structure SDS (Simple Dynamic String) header file Static inline size_t Sdslen (const SDS s) { struct SDSHDR *sh = (void*) (s (sizeof (struct))); Return sh->len; } See this code stunned a bit, before always thought inline this keyword intelligence in C + + use, did not think here also use .... Google's ... Http://stackoverflow.com/questions/7762731/

utf8_general_ci can be Reference: Http://www.diybl.com/course/7_databases/mysql/myxl/20100721/474574.html Chinese: http://hi.baidu.com/my_labs/blog/item/ea1a578360dc82ab0cf4d2c0.html English: Http://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci 4, the table name contains special characters Copy Code code as follows: SELECT * from books where ' book-id ' = ' b001 ' Note is next

That is, as long as IE9 below, call two dedicated JS But I test found that just using the above JS file is not OK, 2. The calling method is incorrect Do not refer to Respond.min.js or respond.js or CSS files in file://or @import form 3. Identify the contents of the browser (use META tags to adjust the browser's rendering mode) Bootstrap does not support IE compatibility mode, in order to allow IE browser to run the latest rendering mode, will add the following tags in the pag

') {//Http://stackoverflow.com/questions/766809/whats-the-difference-bet Ween-utf8-general-ci-and-utf8-unicode-ci $tableOptions = ' CHARACTER SET utf8 COLLATE utf8_unicode_ci '; } $this->createtable (Self::tbl_name, [' ID ' => schema::type_pk, ' username ' => schema::type_s TRING. ' Not NULL ', ' Auth_key ' => schema::type_string. ' (+) not NULL ', ' Password_hash ' => schema::type_string. ' Not NULL ',//password ' password_reset_token ' => sche

There are two things that can happen when you write a statement: Toast.maketext (alarmactivity.this, "Alarm clock cancellation", toast.length_short); In English in Google search what ' s difference between this and activity.this, finally have the result (in fact, they use Java in the back of the classname.this and this Before the search is activity.this, so there is no result, this should be flexible to improve their search ability. In StackOverflow found the answer: Http://sta

, and to ensure existence. php.ini files should normally be located under the system disk/windows directory] But I still have this hint after I set it up. Then after repeated testing, finally solve the problem.Solution:Modify Session.auto_start = 0 for session.auto_start = 1 in php.ini Warning:cannot Send session Cache Limiter-headers already sent (output started At/home/alltom/public_html/flame/templa te.inc.php:1) in/home/alltom/public_html/flame/lib.inc.php on line 550

a reusable bottom, need to take more experience. The advantage is that the debugging process is simpler, and you can use Teamscontroller as a test case to test that reusable bottom. I choose the method 3 (not because it is the best, before the code is not much time to choose over 1, more confident when the choice of 2). Only the index function is processed in the refactoring step Step (create function see next article). 1. Write an action to replace Teams/index in the Itemscontroller first. Thi

you're doing, you can also set your partition manually); 9, select the disk you want to partition: 10, whether to write to change the disk and configure LVM, select Yes; 11. Configure LVM:If you choose to boot-use the entire disk and set up the LVM partition to create a large volume group to use the disk space. Now you can specify how much disk space should be used for logical volumes/exchanges. It makes sense to leave some room idle and allow you to expand your existing logical volumes later o

to update. View button opens Gsoftware, which I has already on anyway. Notice that Gsoftware lets me know that I only had 9 updates, when in reality there is than, plus 3 removals. This is due a grouping mechanism, which categorize various packages into parent-levels. Gsoftware list acts like a tree and we can navigate into 2 levels. First level displays all the children of the parent category, and at second level each child shows us more info about Itse Lf. Fantastic work in this, it'll sati

Tags: high availability mysql Build Mys service RAC version storage ManagementComparison of supported features: Https://www.quora.com/Whats-the-difference-between-Oracle-and-MySQL Comparison of Oracle and MySQL in terms of security, data type, storage type. Https://docs.oracle.com/cd/E25259_01/doc.31/e18461/oracle_mysql_compared.htm Ali go to Oracle, using the MySQL event: https://www.zhihu.com/question/29088685 RAC is an Oracle database high avail

not affect the performance of the original transaction.It can draw a security thread between the transaction and the cache system via HTTP to keep the data secure in the OLTP database.It has the smallest monitoring function; A cache log and exception Log can further enhance the build management console.With the Service Broker message component, the solution is flexible enough to trigger or reach a network-based system when asynchronous message processing occurs. In other words, the database is