How to connect to mysql in MapReduce temporarily?
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There are ten answers to this question.
Best solution
I want to connect to MySQL in MapReduce temporarily. In other words, I want to bring table in MySQL to Map function temporarily to change InputData(Text) but, the Result was empty. Below is my code: public class Map extends Mapper{ private Text outputKey=new Text(); private final static IntWritable outputValue=new IntWritable(1); public void map(LongWritable key,Text value,Context context) throws IOException,InterruptedException { int i=0; try{ Connection con=DriverManager.getConnection("...
Answer:
If your query is static, i.e.it does not depend on map input (as is your current query), you should...
kimkwangmin at Stack Overflow Mark as irrelevant Undo
Other solutions
I'm over my head again trying to run a program for a class and you were a great help last time. I'm trying to connect to mysql from Perl and have installed DBD:mysql on my Mac (OS X 10.5.8). I have no idea what I'm doing. Can you help? I get the following...
Answer:
I would just install XAMPP for OS X, install the developer bundle too, and then install DBD::mysql in...
sunshine37 at Ask.Metafilter.Com Mark as irrelevant Undo
Please let me know whether is it possible to connect a MYSQL db which is located in Windows Server 2003 Microsoft-IIS/6.0 from a Linux Apache/1.3.37 (Unix) server. FYI, the mysql db connection file is in LINUX Apache server and the mysql database is...
Answer:
make sure the mysql server is configured to allow connections from other computers, and that any firewals...
Mahesh at Yahoo! Answers Mark as irrelevant Undo
It shows this message or anothr page of showing this content appears when i type in http:\localhost\mysql_test.php Does anyone know whts the solution to this MySQL Test Page Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'root...
Answer:
You havn't set a password yet for the root account in the DB. Use a blank password until you enter the...
saba s at Yahoo! Answers Mark as irrelevant Undo
Over the past few days I have been trying to learn how to use MySQL in correlation with PHP. Every time I try to connect to MySQL using this code: <?php mysql_connect(); ?> I am given an error saying "Access Denied...". I noticed however...
Answer:
First of all, you should use MySQLi instead of MySQL with PHP (don't worry, it's almost the same). http...
Mark at Yahoo! Answers Mark as irrelevant Undo
here's my code for "checklogin.php" NOTE: this all works on my local computer but i want to upload it to my website, but when i do it doesn't work, here's the source: <?php $host='localhost:3307'; // Host name $username='xxxxxx; // Mysql...
Answer:
Just try this part for now: <?php $host='localhost:3307'; // Host name $username='xxxxxx; // Mysql...
Dray Delosier at Yahoo! Answers Mark as irrelevant Undo
Hi there, I have setup MySql on a separate linux server . and connecting from another Linux Server. http://localhost/my_db_test.php | Works fine but http://xx.xx.xx.xx/my_db_test.php from another computer throws error . "Can't connect to MySql...
Answer:
thanks Nupal , But it did't work . I see the same error . Cant connect to database server on "xx...
Raja Shahzad Naveed at Quora Mark as irrelevant Undo
So, I have a database in MySql, and i want to use the database in a java application. I dont know how to connect the two. The database in Sql is called "restaurants" I've tried the following code: Connection con = null; try { Class.forName...
Answer:
You must download the MySQL driver that will connect you with the DB by means of JDBC. Use this to connect...
mayi o at Yahoo! Answers Mark as irrelevant Undo
I want to connect from a Mac OS X machine to a Windows XP running XAMPP (Apache, MySQL, PHP), in order to use an application running on the Windows machine.At the same time, I want to have the Mac OS X allowing Internet browsing, while Windows should...
Answer:
If it's just the Mac connecting to the Windows XP machine, by far the simplest solution is to just get...
lion at Ask.Metafilter.Com Mark as irrelevant Undo
My code is package voterid; import java.sql.*; public class voter { void vote() { String url = "jdbc:mysql://localhost:3306/"; String dbName = "vote"; String driver = "com.mysql.jdbc.Driver"; String userName = "root...
Answer:
My standby advice for Java programmers is:90% of all Java problems are due to your CLASSPATH not being...
Bill Karwin at Quora Mark as irrelevant Undo
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