[jira] [Created] (DRILL-6818) Add descriptions to secondary index options

["Arina Ielchiieva (JIRA)" <ji...@apache.org>]

Arina Ielchiieva created DRILL-6818:
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             Summary: Add descriptions to secondary index options
                 Key: DRILL-6818
                 URL: https://issues.apache.org/jira/browse/DRILL-6818
             Project: Apache Drill
          Issue Type: Task
    Affects Versions: 1.15.0
            Reporter: Arina Ielchiieva
            Assignee: Aman Sinha
             Fix For: 1.15.0


Add descriptions to secondary index options in ExecConstants and PlannerSettings:

    ============ index plan related options ==============
    planner.use_simple_optimizer: false,
    planner.enable_index_planning: true,
    planner.enable_statistics: true,
    planner.disable_full_table_scan: false,
    planner.index.max_chosen_indexes_per_table: 5,
    planner.index.force_sort_noncovering: false,
    planner.index.use_hashjoin_noncovering: false,
    planner.index.covering_selectivity_threshold: 1.0,
    planner.index.noncovering_selectivity_threshold: 0.025,
    planner.index.rowkeyjoin_cost_factor: 0.1,
    planner.index.statistics_rowcount_scaling_factor: 0.1,
    planner.index.prefer_intersect_plans: false,
    planner.index.max_indexes_to_intersect: 5,
    exec.query.rowkeyjoin_batchsize: 128,



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