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https://issues.apache.org/jira/browse/KUDU-3759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabriella Lotz reassigned KUDU-3759:
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Assignee: Gabriella Lotz
> Randomize equal-skew table selection
> ------------------------------------
>
> Key: KUDU-3759
> URL: https://issues.apache.org/jira/browse/KUDU-3759
> Project: Kudu
> Issue Type: Sub-task
> Reporter: Gabriella Lotz
> Assignee: Gabriella Lotz
> Priority: Major
>
> {*}File{*}:
> {{{}[src/kudu/rebalance/rebalance_algo.cc](src/kudu/rebalance/rebalance_algo.cc){}}},
> inside {{TwoDimensionalGreedyAlgo::GetNextMove()}}
> The {{equal_range(max_table_skew)}} loop currently iterates {{std::multimap}}
> insertion order, making the first equal-skew table always "win." Fix: collect
> the range into a {{{}vector<TableBalanceInfo>{}}}, shuffle it with the
> existing {{{}mt19937 generator_{}}}, then run the follower-preference loop
> over the shuffled vector.
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