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ISPASS
2010
IEEE

The Hadoop distributed filesystem: Balancing portability and performance

13 years 10 months ago
The Hadoop distributed filesystem: Balancing portability and performance
—Hadoop is a popular open-source implementation of MapReduce for the analysis of large datasets. To manage storage resources across the cluster, Hadoop uses a distributed user-level filesystem. This filesystem — HDFS — is written in Java and designed for portability across heterogeneous hardware and software platforms. This paper analyzes the performance of HDFS and uncovers several performance issues. First, architectural bottlenecks exist in the Hadoop implementation that result in inefficient HDFS usage due to delays in scheduling new MapReduce tasks. Second, portability limitations prevent the Java implementation from exploiting features of the native platform. Third, HDFS implicitly makes portability assumptions about how the native platform manages storage resources, even though native filesystems and I/O schedulers vary widely in design and behavior. This paper investigates the root causes of these performance bottlenecks in order to evaluate tradeoffs between portabil...
Jeffrey Shafer, Scott Rixner, Alan L. Cox
Added 17 May 2010
Updated 17 May 2010
Type Conference
Year 2010
Where ISPASS
Authors Jeffrey Shafer, Scott Rixner, Alan L. Cox
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