Milind Bhandarkar

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Hadoop Distributed File System (HDFS) presents unique challenges to the existing energy-conservation techniques and makes it hard to scale-down servers. We propose an energy-conserving, hybrid, logical multi-zoned variant of HDFS for managing dataprocessing intensive, commodity Hadoop cluster. Green HDFS’s data-classifica-tion-driven data placement allows(More)
HAWQ, developed at Pivotal, is a massively parallel processing SQL engine sitting on top of HDFS. As a hybrid of MPP database and Hadoop, it inherits the merits from both parties. It adopts a layered architecture and relies on the distributed file system for data replication and fault tolerance. In addition, it is standard SQL compliant, and unlike other(More)
Typical Hadoop setups employ Direct Attached Storage (DAS) with compute nodes and uniform replication of data to sustain high I/O throughput and fault tolerance. However, not all data is accessed at the same time or rate. Thus, if a large replication factor is used to support higher throughput for popular data, it wastes storage by unnecessarily replicating(More)
From it's beginnings as a framework for building web crawlers for small-scale search engines to being one of the most promising technologies for building datacenter-scale distributed computing and storage platforms, Apache Hadoop has come far in the last seven years. In this talk I will reminisce about the early days of Hadoop, and will give an overview of(More)
Apache Hadoop has become the platform of choice for developing large-scale data-intensive applications. In this tutorial, we will discuss the design philosophy and architecture of Hadoop, describe how to design and develop Hadoop applications and higher-level application frameworks to crunch several terabytes of data, and describe some uses of Hadoop for(More)
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