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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19992) Vectorization: Follow-on to HIVE-19951 --> add call to SchemaEvolution.isOnlyImplicitConversion to disable encoded LLAP I/O for ORC only when data type conversion is not implicit
Date Sun, 15 Jul 2018 23:18:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16544700#comment-16544700
] 

Matt McCline commented on HIVE-19992:
-------------------------------------

orc_ppd_schema_evol_3a

File
struct<t:tinyint,si:smallint,i:int,b:bigint,f:float,d:double,bo:boolean,s:string,c:char(50),v:varchar(50),da:date,dec:decimal(4,2),bin:binary>,
tinyint, null, null, null, null, null, null, null, null, null, null, null, null]

Reader
struct<t:string,si:smallint,i:int,b:bigint,f:float,d:double,bo:boolean,s:string,c:char(50),v:varchar(50),da:date,dec:decimal(4,2),bin:binary>

> Vectorization: Follow-on to HIVE-19951 --> add call to SchemaEvolution.isOnlyImplicitConversion
to disable encoded LLAP I/O for ORC only when data type conversion is not implicit
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-19992
>                 URL: https://issues.apache.org/jira/browse/HIVE-19992
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>         Attachments: HIVE-19992.01.patch
>
>
> When ORC-380 that adds the SchemaEvolution.isOnlyImplicitConversion call is available
in the ORC release used by Apache master (and branch-3), then update LlapRecordReader (see
comments in HIVE-19951 change).



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