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https://issues.apache.org/jira/browse/DRILL-3813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aman Sinha updated DRILL-3813:
------------------------------
Assignee: (was: Aman Sinha)
> 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)
>
> 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:
> {noformat}
> 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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