[jira] [Commented] (DRILL-2618) BasicFormatMatcher calls getFirstPath(...) without checking # of paths is not zero

["Hanifi Gunes (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-2618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15014392#comment-15014392 ] 

Hanifi Gunes commented on DRILL-2618:
-------------------------------------

[~amansinha100] and [~adeneche] please review

Since
{code:sql}
select * from `somedir`
{code}

is semantically equivalent to

{code:sql}
select * from `somedir/*`
{code}

both queries should be consistent. Since the latter reports `table not found` this patch makes the former behave the same way.

> BasicFormatMatcher calls getFirstPath(...) without checking # of paths is not zero
> ----------------------------------------------------------------------------------
>
>                 Key: DRILL-2618
>                 URL: https://issues.apache.org/jira/browse/DRILL-2618
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Other
>            Reporter: Daniel Barclay (Drill)
>            Assignee: Deneche A. Hakim
>             Fix For: Future
>
>
> {{BasicFormatMatcher.isReadable(...)}} calls {{getFirstPath(...)}} without checking that there is at least one path.  This can cause an IndexOutOfBoundsException.
> To reproduce, create an empty directory {{/tmp/CaseInsensitiveColumnNames}} and run {{exec/java-exec/src/test/java/org/apache/drill/TestExampleQueries.java}}.



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