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From "Daniel Barclay (Drill) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-3813) table from directory subtree having no descendent files fails with index error
Date Mon, 21 Sep 2015 06:09:04 GMT

     [ https://issues.apache.org/jira/browse/DRILL-3813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Barclay (Drill) updated DRILL-3813:
------------------------------------------
    Description: 
Trying to use as a table a directory subtree that has no descendent files (but zero or more
descendent directories) yields what seems to be a partially handled index out-of-bounds condition.
 

For example, with {{/tmp/empty_directory}} being an empty directory:

{noformat}
0: jdbc:drill:zk=local> SELECT * FROM `dfs`.`tmp`.`empty_directory`;
Error: VALIDATION ERROR: Index: 0, Size: 0


[Error Id: 747425c9-5350-4813-9f0d-ecf580e15101 on dev-linux2:31010] (state=,code=0)
0: jdbc:drill:zk=local> 
{noformat}


Also, with {{/tmp/no_child_files_subtree}} having two child directories and a grandchild directory,
but not descendent files:

0: jdbc:drill:zk=local> SELECT * FROM `dfs`.`tmp`.`no_child_files_subtree`;
Error: VALIDATION ERROR: Index: 0, Size: 0


[Error Id: abc90424-8434-4403-b44b-0ba69ef43151 on dev-linux2:31010] (state=,code=0)
0: jdbc:drill:zk=local> 
{noformat}


A directory subtree having no files was expected to be taken as a table with no rows (and
a null schema).


  was:
Trying to use as a table a directory subtree that has no descendent files (but zero or more
descendent directories) yields what seems to be a partially handled index out-of-bounds condition.
 

For example, with {{/tmp/empty_directory}} being an empty directory:

{noformat}
0: jdbc:drill:zk=local> SELECT * FROM `dfs`.`tmp`.`empty_directory`;
Error: VALIDATION ERROR: Index: 0, Size: 0


[Error Id: 747425c9-5350-4813-9f0d-ecf580e15101 on dev-linux2:31010] (state=,code=0)
0: jdbc:drill:zk=local> 
{noformat}


Also, with {{/tmp/no_child_files_subtree}} having two child directories and a grandchild directory,
but not descendent files:

0: jdbc:drill:zk=local> SELECT * FROM `dfs`.`tmp`.`no_child_files_subtree`;
Error: VALIDATION ERROR: Index: 0, Size: 0


[Error Id: abc90424-8434-4403-b44b-0ba69ef43151 on dev-linux2:31010] (state=,code=0)
0: jdbc:drill:zk=local> 

{noformat}



> table from directory subtree having no descendent files fails with index error
> ------------------------------------------------------------------------------
>
>                 Key: DRILL-3813
>                 URL: https://issues.apache.org/jira/browse/DRILL-3813
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: SQL Parser, Storage - Other
>            Reporter: Daniel Barclay (Drill)
>            Assignee: Aman Sinha
>
> Trying to use as a table a directory subtree that has no descendent files (but zero or
more descendent directories) yields what seems to be a partially handled index out-of-bounds
condition.  
> For example, with {{/tmp/empty_directory}} being an empty directory:
> {noformat}
> 0: jdbc:drill:zk=local> SELECT * FROM `dfs`.`tmp`.`empty_directory`;
> Error: VALIDATION ERROR: Index: 0, Size: 0
> [Error Id: 747425c9-5350-4813-9f0d-ecf580e15101 on dev-linux2:31010] (state=,code=0)
> 0: jdbc:drill:zk=local> 
> {noformat}
> Also, with {{/tmp/no_child_files_subtree}} having two child directories and a grandchild
directory, but not descendent files:
> 0: jdbc:drill:zk=local> SELECT * FROM `dfs`.`tmp`.`no_child_files_subtree`;
> Error: VALIDATION ERROR: Index: 0, Size: 0
> [Error Id: abc90424-8434-4403-b44b-0ba69ef43151 on dev-linux2:31010] (state=,code=0)
> 0: jdbc:drill:zk=local> 
> {noformat}
> A directory subtree having no files was expected to be taken as a table with no rows
(and a null schema).



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