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https://issues.apache.org/jira/browse/IMPALA-3451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhishek Rawat updated IMPALA-3451:
-----------------------------------
Priority: Critical (was: Minor)
> Long comments should not break queries
> --------------------------------------
>
> Key: IMPALA-3451
> URL: https://issues.apache.org/jira/browse/IMPALA-3451
> Project: IMPALA
> Issue Type: Bug
> Components: Catalog
> Affects Versions: Impala 2.3.0
> Reporter: Marcell Szabo
> Priority: Critical
> Labels: ramp-up, usability
>
> 1) The type of column "COMMENT" in HMS DB table "COLUMNS_V2" is varchar(256),
> which makes Impala thinks the max length of comment is just 256 characters
> 2) A table defined with an avro schema file can have a comment that is longer
> than 256 characters.
> Querying from such table causes:
> ERROR: AnalysisException: Failed to load metadata for table: 'database.table'
> CAUSED BY: TableLoadingException: Failed to load metadata for table:
> database.table
> CAUSED BY: AnalysisException: Comment of column 'columnname' exceeds maximum
> length of 256 characters:
> <comment>. has 267 characters.
> Impala should ignore / truncate the comment and execute the query normally.
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