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https://issues.apache.org/jira/browse/HIVE-25553?focusedWorklogId=670004&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-670004
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ASF GitHub Bot logged work on HIVE-25553:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/Oct/21 10:45
Start Date: 26/Oct/21 10:45
Worklog Time Spent: 10m
Work Description: kgyrtkirk commented on pull request #2689:
URL: https://github.com/apache/hive/pull/2689#issuecomment-951811525
reverted from master
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Issue Time Tracking
-------------------
Worklog Id: (was: 670004)
Time Spent: 2h 40m (was: 2.5h)
> Support Map data-type natively in Arrow format
> ----------------------------------------------
>
> Key: HIVE-25553
> URL: https://issues.apache.org/jira/browse/HIVE-25553
> Project: Hive
> Issue Type: Improvement
> Components: llap, Serializers/Deserializers
> Reporter: Adesh Kumar Rao
> Assignee: Sruthi Mooriyathvariam
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> Currently ArrowColumnarBatchSerDe converts map datatype as a list of structs
> data-type (where stuct is containing the key-value pair of the map). This
> causes issues when reading Map datatype using llap-ext-client as it reads a
> list of structs instead.
> HiveWarehouseConnector which uses the llap-ext-client throws exception when
> the schema (containing Map data type) is different from actual data (list of
> structs).
>
> Fixing this issue requires upgrading arrow version (where map data-type is
> supported), modifying ArrowColumnarBatchSerDe and corresponding
> Serializer/Deserializer to not use list as a workaround for map and use the
> arrow map data-type instead.
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