Debugging performance problems in distributed systems is difficult. Thus many debugging tools are being developed to aid diagnosis. Many require information from end-to-end tracing in order to perform their analysis. This paper describes the development of an end-to-end tracing framework for the Hadoop Distributed File System. The approach to instrumentation in this implementation differs from ...

Here, we describe an engineering approach to quantitatively compare migration, morphologies, and adhesion for tumorigenic human fibrosarcoma cells (HT-1080s) and primary human dermal fibroblasts (hDFs) with the aim of identifying distinguishing properties of the transformed phenotype. Relative adhesiveness was quantified using self-assembled monolayer (SAM) arrays and proteolytic 3-dimensional ...

Big Data Analytics is an innovative approach for extracting the data from a huge volume of warehouse systems. It reveals method to compress high into clusters by MapReduce and HDFS. However, processing has taken more time extract store in Hadoop clusters. The proposed system deals with challenges delay shuffle phase map-reduce due scheduling sequencing. For improving speed big data, this work u...

BACKGROUND Cardiac conduction occurs in an electrical syncytium of excitable cells connected by gap junctions. Disruption of these electrophysiological properties causes conduction slowing or block. Depending on the location of affected cells within the heart, this has the potential to result in clinical syndromes such as atrioventricular block. With a view to developing gene therapy strategies...

Large Internet services companies like Google, Yahoo, and Facebook use the MapReduce programming model to process log data. MapReduce is designed to work on data stored in a distributed filesystem like Hadoop’s HDFS. As a result, a number of log collection systems have been built to copy data into HDFS. These systems often lack a unified approach to failure handling, with errors being handled s...

Given their low toxicity and natural presence in the human diet, selenium nanoparticles have been established as potential candidates for the treatment of numerous cancers. Red-allotrope selenium nanoparticles (rSeNPs) were synthesized and characterized in this study. Head and neck squamous cell carcinoma (HNSCC) and human dermal fibroblast (HDF) cells were cultured and exposed to rSeNPs at con...

Long interspersed element-1 (LINE-1 or L1) retrotransposons account for nearly 17% of human genomic DNA and represent a major evolutionary force that has reshaped the structure and function of the human genome. However, questions remain concerning both the frequency and the developmental timing of L1 retrotransposition in vivo and whether the mobility of these retroelements commonly results in ...

Data-intensive distributed file systems are emerging as a key component of large scale Internet services and cloud computing platforms. They are designed from the ground up and are tuned for specific application workloads. Leading examples, such as the Google File System, Hadoop distributed file system (HDFS) and Amazon S3, are defining this new purpose-built paradigm. It is tempting to classif...

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 scale-down by guaranteeing substantiall...

Hadoop Distributed File System (HDFS) and MapReduce model have become popular technologies for large scale data organization and analysis. Existing model of data organization and processing in Hadoop using HDFS and MapReduce are ideally tailored for search and data parallel applications, for which there is no need of data dependency with its neighbouring/adjacent data. However, many scientific ...