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https://issues.apache.org/jira/browse/KUDU-1930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15905985#comment-15905985
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Todd Lipcon commented on KUDU-1930:
-----------------------------------
oops, forgot to paste the flags file I used:
{code}
--memory_limit_hard_bytes=4294967296
-maintenance_manager_num_threads=4
{code}
> 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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