Massoud Mazar

Sharing The Knowledge


setting up hadoop/hive cluster on Centos 5

If you are reading this post chances are you are trying to setup a hadoop/hive cluster. I hope these instructions save you some time with your installation.

Install CentOS:

I assume you are starting from scratch and want to setup a small cluster with minimum OS components (as far as I could minimize it). To start, download the OS setup media, and boot each machine with it. Go through the More...

CSS Friendly Menu, Problems with Chrome and IE6

After realizing that menu is generating a huge HTML and causes the application pages to be large and slow, I decided to use CSS friendly control adapters. It reduced the page size by 50 KB, but I had some challenges to get it to show the way I wanted it. Here I want to share some of the things I learned along the way:More...

ReportViewer control toolbar in Google Chrome browser

SQL Server Reporting Services ReportViewer control has a toolbar that is not displayed correctly in Google Chrome browser. You will see something like this:

 The correct display looks like this:

A workaround I'm using is to use JavaScript to find DIV and TABLE elements in the above toolbar and change their "display" style to "inline-block".

Following code can be added to the bottom of the page to accomplish this:More...

Showing animated icon while populating TreeView with PopulateOnDemand

TreeView server control in can use AJAX behind the scenes to populate child nodes when user clicks on the expand icon next to each node. If the loading process is fast, it works perfectly. But when child nodes are generated by a slow process (like a slow database query) then user experience is unacceptable. User would click on the expand and nothing would happen for a long time, leaving user wondering if the click really did anything.

In such scenarios, an animated icon that lets user know data is being loaded would help a lot. More...

CodeFormatterExtension not working with all Themes

I was experimenting different themes with my BlogEngine blog and noticed not all of them show the correct color coding of my source code examples. There is a simple fix for that which is to copy the section of style.css file related to "Syntax Highlighter" from a working theme to the style.css of the theme you like. That should do the trick.

Using an Installer Class to Start/Remove Tray Icon

Suppose you want to start your SysTray application at installation time and remove it when your application is uninstalled. Here is one way to do this:

Add an Installer Class to your project, and overwrite the Install and Uninstall methods. For Example, assuming your SysTray program is named "My SysTray": More...

Outlook add-in to select "From Account"

If you have setup more than one email account in your Outlook (Work and Home) you may have realized a need for some type of pop-up dialog which will ask you which account you want to use when creating a new email. Outlook lets you define a default account, but obviously that's not good enough. I decided to write a small and simple add-in which will ask me to select the sending account every time I compose a new email. (Even if Outlook already has such a tool, I couldn't find it! and I wanted to gain some Office programming knowledge anyways.)

I used Visual Studio 2008 and created a new Office project of type Outlook Add-in. This will give you the basics you need. Just fill the methods with your code and you are done. More...

Code sample for using iTextSharp PDF library

iTextSharp is a rich code library to create PDF and RTF output. Recently I decided to use it for a client and realized there are not much good code examples available on the internet. Even some of the code samples from its online tutorial wont run.

By doing a lot of try and error and with some help from other posts, I could get the desired output. It took me too much time to gather all this information and thought it may come handy to others. So I put together a sample web application which creates a PDF document and renders it to the client browser. Here is the code behind for the page: More...