[jira] [Assigned] (CALCITE-3055) TableScan type mismatch in VolcanoPlanner

["Danny Chan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-3055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Danny Chan reassigned CALCITE-3055:
-----------------------------------

    Assignee: Danny Chan

> TableScan type mismatch in VolcanoPlanner
> -----------------------------------------
>
>                 Key: CALCITE-3055
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3055
>             Project: Calcite
>          Issue Type: Bug
>    Affects Versions: 1.19.0
>            Reporter: Bohdan Kazydub
>            Assignee: Danny Chan
>            Priority: Major
>
> In Drill with Calcite updated to 1.19.0 we observe following problem:
> the following query
> {code}
> CREATE VIEW nation_view_testunionall_expandable_star AS select n_name, n_nationkey FROM cp.`tpch/nation.parquet`;
> (SELECT n_comment, n_regionkey FROM cp.`tpch/nation.parquet` LIMIT 5) UNION ALL (SELECT * FROM nation_view_testunionall_expandable_star  LIMIT 5)
> {code}
> fails with
> {code}
> 15:46:06.005 [2333c7f1-89f3-0b80-8369-68e24895729e:foreman] ERROR o.a.drill.exec.work.foreman.Foreman - SYSTEM ERROR: AssertionError: Type mismatch:
> left:
> RecordType(DYNAMIC_STAR **, ANY n_comment, ANY n_regionkey) NOT NULL
> right:
> RecordType(DYNAMIC_STAR **, ANY n_comment, ANY n_regionkey, ANY n_name, ANY n_nationkey) NOT NULL
> {code}
> when Volcano planner is registering rel nodes. The initial plan is the following:
> {code}
> LogicalUnion(all=[true]): rowcount = 10.0, cumulative cost = \{520.0 rows, 940.755032994728 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 74
>   LogicalSort(fetch=[5]): rowcount = 5.0, cumulative cost = \{205.0 rows, 365.377516497364 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 68
>     LogicalProject(n_comment=[$1], n_regionkey=[$2]): rowcount = 100.0, cumulative cost = \{200.0 rows, 301.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 67
>       EnumerableTableScan(table=[[cp, tpch/nation.parquet]]): rowcount = 100.0, cumulative cost = \{100.0 rows, 101.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 29
>   LogicalSort(fetch=[5]): rowcount = 5.0, cumulative cost = \{305.0 rows, 565.377516497364 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 73
>     LogicalProject(n_name=[$0], n_nationkey=[$1]): rowcount = 100.0, cumulative cost = \{300.0 rows, 501.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 72
>       LogicalProject(n_name=[$3], n_nationkey=[$4]): rowcount = 100.0, cumulative cost = \{200.0 rows, 301.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 71
>         EnumerableTableScan(table=[[cp, tpch/nation.parquet]]): rowcount = 100.0, cumulative cost = \{100.0 rows, 101.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 34
> {code}
> It contains two EnumerableTableScan operators with different row types specified in the error message above. In the scope of CALCITE-2454 was removed rel data type from the key in the \{{VolcanoPlanner.mapDigestToRel}} map.
> To fix this, `{{TableScan` should include rowType}} item in {{AbstractRelNode#explainTerms(RelWriter)}} method because in case of dynamic tables there is the same digest for different operators. The same thing was done for Values operator and literals in conditions.



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