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https://issues.apache.org/jira/browse/KUDU-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon resolved KUDU-2184.
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Resolution: Fixed
Fix Version/s: 1.6.0
> Avoid large allocations in MemRowSet arena
> ------------------------------------------
>
> Key: KUDU-2184
> URL: https://issues.apache.org/jira/browse/KUDU-2184
> Project: Kudu
> Issue Type: Improvement
> Components: perf
> Affects Versions: 1.6.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 1.6.0
>
>
> tcmalloc caches metadata for spans of free space only up to a certain size
> (1MB). For larger allocations, an O(n) search is used, which can be quite
> slow according to https://github.com/gperftools/gperftools/issues/535 . Based
> on some recent analysis of latency outliers in a long-running cluster, I
> think we may be hitting this issue on the MRS Arena. We should set the max
> component size to 1MB to avoid it.
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