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https://issues.apache.org/jira/browse/HIVE-26298?focusedWorklogId=781925&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-781925
]
ASF GitHub Bot logged work on HIVE-26298:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 16/Jun/22 06:10
Start Date: 16/Jun/22 06:10
Worklog Time Spent: 10m
Work Description: lcspinter merged PR #3361:
URL: https://github.com/apache/hive/pull/3361
Issue Time Tracking
-------------------
Worklog Id: (was: 781925)
Time Spent: 1h (was: 50m)
> Selecting complex types on migrated iceberg table does not work
> ---------------------------------------------------------------
>
> Key: HIVE-26298
> URL: https://issues.apache.org/jira/browse/HIVE-26298
> Project: Hive
> Issue Type: Bug
> Reporter: Gergely Fürnstáhl
> Assignee: László Pintér
> Priority: Major
> Labels: pull-request-available
> Attachments: 00001-a5d522f4-a065-44e6-983b-ba66596b4332.metadata.json
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> I am working on implementing NameMapping in Impala (mainly replicating Hive's
> functionality) and ran into the following issue:
> {code:java}
> CREATE TABLE array_demo
> (
> int_primitive INT,
> int_array ARRAY<INT>,
> int_array_array ARRAY<ARRAY<INT>>,
> int_to_array_array_Map MAP<INT,ARRAY<ARRAY<INT>>>
> )
> STORED AS ORC;
> INSERT INTO array_demo values (0, array(1), array(array(2), array(3,4)),
> map(5,array(array(6),array(7,8))));
> select * from array_demo;
> +---------------------------+-----------------------+-----------------------------+------------------------------------+
> | array_demo.int_primitive | array_demo.int_array |
> array_demo.int_array_array | array_demo.int_to_array_array_map |
> +---------------------------+-----------------------+-----------------------------+------------------------------------+
> | 0 | [1] | [[2],[3,4]]
> | {5:[[6],[7,8]]} |
> +---------------------------+-----------------------+-----------------------------+------------------------------------+
> {code}
> Converting to iceberg
>
>
> {code:java}
> ALTER TABLE array_demo SET TBLPROPERTIES
> ('storage_handler'='org.apache.iceberg.mr.hive.HiveIcebergStorageHandler')
> select * from array_demo;
> INFO : Compiling
> command(queryId=gfurnstahl_20220608102746_54bf3e74-e12b-400b-94a9-4e4c9fe460fe):
> select * from array_demo
> INFO : No Stats for default@array_demo, Columns: int_primitive, int_array,
> int_to_array_array_map, int_array_array
> INFO : Semantic Analysis Completed (retrial = false)
> INFO : Created Hive schema:
> Schema(fieldSchemas:[FieldSchema(name:array_demo.int_primitive, type:int,
> comment:null), FieldSchema(name:array_demo.int_array, type:array<int>,
> comment:null), FieldSchema(name:array_demo.int_array_array,
> type:array<array<int>>, comment:null),
> FieldSchema(name:array_demo.int_to_array_array_map,
> type:map<int,array<array<int>>>, comment:null)], properties:null)
> INFO : Completed compiling
> command(queryId=gfurnstahl_20220608102746_54bf3e74-e12b-400b-94a9-4e4c9fe460fe);
> Time taken: 0.036 seconds
> INFO : Executing
> command(queryId=gfurnstahl_20220608102746_54bf3e74-e12b-400b-94a9-4e4c9fe460fe):
> select * from array_demo
> INFO : Completed executing
> command(queryId=gfurnstahl_20220608102746_54bf3e74-e12b-400b-94a9-4e4c9fe460fe);
> Time taken: 0.0 seconds
> INFO : OK
> Error: java.io.IOException: java.lang.IllegalArgumentException: Can not
> promote MAP type to INTEGER (state=,code=0)
> select int_primitive from array_demo;
> +----------------+
> | int_primitive |
> +----------------+
> | 0 |
> +----------------+
> 1 row selected (0.088 seconds)
> {code}
> Removing schema.name-mapping.default solves it
> {code:java}
> ALTER TABLE array_demo UNSET TBLPROPERTIES ('schema.name-mapping.default');
> select * from array_demo;
> +---------------------------+-----------------------+-----------------------------+------------------------------------+
> | array_demo.int_primitive | array_demo.int_array |
> array_demo.int_array_array | array_demo.int_to_array_array_map |
> +---------------------------+-----------------------+-----------------------------+------------------------------------+
> | 0 | [1] | [[2],[3,4]]
> | {5:[[6],[7,8]]} |
> +---------------------------+-----------------------+-----------------------------+------------------------------------+
> {code}
> Possible cause:
>
> The name mapping generated and pushed into schema.name-mapping.default is
> different from the name mapping in the schema in the metadata.json (attached
> it)
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