Code & Cluster
Friday, February 15, 2013
Hadoop Secondary Sort: Sorting values
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Sorting is a core strength of the Hadoop MapReduce framework. But by default it sorts only the keys. The values for each key are not sorted...
1 comment:
Wednesday, January 16, 2013
Generics : Array Creation
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How do you write a method to convert a generic collection to an Array ? A naive implementation would be: public static <T> T[] con...
Wednesday, December 19, 2012
JAVA Garbage Collection
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Garbage (GC) collection is the process by which the java virtual machine frees up memory by releasing the memory taken up by objects that a...
1 comment:
Sunday, November 18, 2012
Spring JAVA config tutorial
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The classic way of configuring beans in Spring is using XML. But many programmers find switching between XML and java code annoying. Having ...
Friday, October 19, 2012
JAVA Synchronized HashMap vs ConcurrentHashMap
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A synchronized HashMap is a Map returned by calling synchronizedMap methods of java.util.Collections class. Map syncMap = Collections.sy...
Sunday, September 16, 2012
Hadoop 2.x Tutorial
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Hadoop 2.x release involves many changes to Hadoop and MapReduce. The centralized JobTracker service is replaced with a ResourceManager tha...
6 comments:
Friday, August 17, 2012
JAVA enum tutorial
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Java language has supported enum type for several releases. Yet, many programmers do not use it or do not fully understand all features of ...
2 comments:
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