Fix MyEclipse Debug appears source not found and import data in SQL Server error

　　 in the space review of my 2014, from life, technology, family and other parties to face their own summary analysis, but also give themselves an account. Also want to write a special blog on the 2014 rookie of the Technical Road memoirs, but because of the various things have been delayed, now to write is also more inappropriate, also do it, anyway, the life of the yard is around the PC, the code turn, not open all day hammering 26 letters.

Looking at the Garden Age unit from month to year, turned over the past blog from Big Data to visualization and some scattered branches, gradually found that the change of time, unchanged is the growth.

The book to the story, these two days to see Ali in the holding of a Tianchi Big Data contest, a closer look, do is recommended algorithm. With an inquisitive and curious mindset, I decided to try, right when learning. In fact, I recommend this piece is a small white, also do not know the recommended aspects of what the classic algorithm, but through these two days, the general understanding of why the recommendation exists, the significance of recommendations and commonly used recommendation algorithm. About this competition, I think of two points, one is big data, the other is recommended, for granted, I think of Mahout. Carefully understand that Mahout has integrated a lot of recommended algorithms for distributed implementations such as USERCF, ITEMCF, Slopeone and so on.

Then the first step is to configure the mahout environment, my environment is such, the virtual machine in the Hadoop, window under the Cygwin, there are myeclipse under the mahout, the specific environment is not described here, the problems solved today are:

In debug mode in MyEclipse, it is not possible to jump to the corresponding class when debugging, showing the source not found and the prompt for edit source Lookup path, and the import of flat file data in SQL server2008 error.

1. In response to the first question, most of the online practices are:

First: Right-click the project->build path->configure build Path->source->add folder, and then add the specified directory to the project space

Second type: Click the edit Source Lookup path button to add the current project

After trying, the above two methods can not solve my problem, the last pass search, accidentally found click the edit Source Lookup path button to join should not be the current project, It is the Src.zip in the JDK installation directory to successfully solve the problem, the real reason is that there is no source package to add the JDK. This src.zip is the JDK Library source code, compiled is the required class library, that is, JDK installation directory Lib under the Rt.jar, we often use the string class, object class, Math class, set class and so on here.

　　　2.sql server2008 Import CSV data error, there are several major errors or warnings:

By targeting the corresponding properties to modify the type still does not solve the problem, later found by clicking on the Import Wizard "suggested Type", minutes to solve the problem, and can be based on existing data to assign the corresponding data type.

Fix MyEclipse Debug appears source not found and import data in SQL Server error