Monthly Archives: August 2014

WordPress $ is not defined even if jQuery is loaded

Many times while using WordPress, if we try to use "e;$” to access jQuery, we get an error the "e;$ is not defined”. This happens because the jQuery library which is included in WordPress loads in "e;no conflict” mode. In the no conflict mode jQuery returns the control of "e;$”, and it is no longer accessible as function, variable or alias for jQuery. WordPress does this in order to prevent compatibility problems with other JavaScript libraries that can be loaded. To solve this we can use "e;jQuery” instead of "e;$”. So, instead of using the standard code with "e;$” we can use the following code, which uses "e;jQuery” instead of "e;$” If you want to use the default "e;$” symbol,…

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Getting Started with Hadoop 2.0

Apache™ Hadoop® is an open source software project that enables the distributed processing of large data sets across clusters of commodity servers. It is designed to scale up from a single server to thousands of machines, with a very high degree of fault tolerance. Rather than relying on high-end hardware, the resiliency of these clusters comes from the software’s ability to detect and handle failures at the application layer. Hadoop 1 popularized MapReduce programming for batch jobs and demonstrated the potential value of large scale, distributed processing. MapReduce, as implemented in Hadoop 1, can be I/O intensive, not suitable for interactive analysis, and constrained in support for graph, machine learning and on other memory intensive algorithms. Hadoop developers rewrote major…

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