Benchmarking
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Thoughts on improving Hadoop benchmarking

Thoughts on improving Hadoop benchmarking

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Benchmarking Benchmarking Presentation Transcript

  • Benchmarking Steve Loughran Julio Guijarro © 2009 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
  • Benchmarks
  • Some Problems •  Estimating Hadoop performance of hardware •  Estimating Hadoop performance of a cluster •  Designing Hadoop-ready servers •  Designing Hadoop-ready clusters •  Optimising the network for Hadoop •  Optimising Hadoop/HDFS for specific applications
  • Recent customer request "They want data for Hadoop Sort for 100GB."
  • Terasort: what else? •  PageRank: CPU intensive, small (static) input dataset •  Something that stresses RAM and CPU •  Something that seeks in the files?
  • Test Datasets •  Wikipedia: 5-10 TB of XML data with changes; user relationships have to be inferred •  SpamAssassin: 70+ GB of SPAM •  Physics? Something Small?
  • Network Measurement What to add to Hadoop/Avro/Thrift to monitor network traffic -and relate to specific jobs?
  • Predicting performance Can an MR job on small datasets predict performance on full size datasets? What extra instrumentation can help?
  • Hardware Q What should a Hadoop-ready server look like? What about a rack? Or a container?