patrick white created HADOOP-10553:
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Summary: Performance: AM scaleability is 10% slower in 2.4
compared to 0.23.9
Key: HADOOP-10553
URL: https://issues.apache.org/jira/browse/HADOOP-10553
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 2.4.0
Reporter: patrick white
Performance comparison benchmarks from 2.x against 0.23 shows AM scalability
benchmark's runtime is approximately 10% slower in 2.4.0. The trend is
consistent across later releases in both lines, latest release numbers are:
2.4.0.0 runtime 255.6 seconds (avg 5 passes)
0.23.9.12 runtime 230.4 seconds (avg 5 passes)
Diff: -9.9%
AM Scalability test is essentially a sleep job that measures time to launch and
complete a large number of mappers.
The diff is consistent and has been reproduced in both a larger (350 node,
100,000 mappers) perf environment, as well as a small (10 node, 2,900 mappers)
demo cluster.
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