Todd Lipcon created KUDU-1930:
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Summary: Improve performance of dictionary builder
Key: KUDU-1930
URL: https://issues.apache.org/jira/browse/KUDU-1930
Project: Kudu
Issue Type: Bug
Components: cfile, perf
Affects Versions: 1.3.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
I locally tweaked tpch_real_world to use hash partitioning instead of range
partitioning, so that the different threads overlapped on the same tablets,
simulating a more realistic parallel load scenario. I noticed that the MM
threads were CPU bound, with a high percentage of CPU in AddCodeWords().
Initial prototypes indicate that optimizing the hashmap used here would be an
easy win.
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