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https://issues.apache.org/jira/browse/DRILL-7332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16893813#comment-16893813
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ASF GitHub Bot commented on DRILL-7332:
---------------------------------------
arina-ielchiieva commented on pull request #1828: DRILL-7332: Allow parsing
empty schema
URL: https://github.com/apache/drill/pull/1828
Details in [DRILL-7332](https://issues.apache.org/jira/browse/DRILL-7332).
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> Drill requires parentheses in the empty file for 'LOAD' argument in the
> 'CREATE SCHEMA' command
> -----------------------------------------------------------------------------------------------
>
> Key: DRILL-7332
> URL: https://issues.apache.org/jira/browse/DRILL-7332
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.16.0
> Reporter: Denys Ordynskiy
> Assignee: Arina Ielchiieva
> Priority: Major
> Fix For: 1.17.0
>
>
> Description:
> - created csvh table: {color:#205081}create table dfs.tmp.`test_table`
> (col1) as select full_name from cp.`employee.json` limit 3;{color}
> - created text file on the local file system `for_load` with text without
> parentheses: {color:#14892c}col1 varchar not null{color}
> - created some schema file: {color:#205081}create or replace schema *LOAD*
> 'file:///home/user/for_load' for table dfs.tmp.`test_table` properties
> ('drill.strict' = 'false');{color} - schema was created successfully;
> - remove all text from the `for_load` file and try to create the same schema:
> {color:#205081}create or replace schema *LOAD* 'file:///home/user/for_load'
> for table dfs.tmp.`test_table` properties ('drill.strict' = 'false');{color}
> *Actual result:*
> Drill throws an error:
> {color:#d04437}Error: RESOURCE ERROR: Unable to parse schema []: Line [1],
> position [0], offending symbol [@0,0:-1='<EOF>',<-1>,1:0]: mismatched input
> '<EOF>' expecting {'(', ID, QUOTED_ID}
> Error while preparing / creating schema for [%s] dfs.tmp.test_table
> [Error Id: faad9c09-2e3e-428c-bd7a-6da8832a943b ] (state=,code=0){color}
> *Expected result:*
> Since Drill doesn't require parentheses for non empty `for_load` file (with
> some columns),
> It couldn't require parentheses for the empty file, used in the `LOAD`
> argument.
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