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https://issues.apache.org/jira/browse/DRILL-2618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16711707#comment-16711707
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Vitalii Diravka commented on DRILL-2618:
----------------------------------------
The functionality of this was changed in scope of DRILL-5546 and -DRILL-4185.
{code}
0: jdbc:drill:zk=local> use dfs.tmp;
+-------+--------------------------------------+
| ok | summary |
+-------+--------------------------------------+
| true | Default schema changed to [dfs.tmp] |
+-------+--------------------------------------+
1 row selected (0.099 seconds)
0: jdbc:drill:zk=local> select * from `emptyfolder`;
+--+
| |
+--+
+--+
No rows selected (1.75 seconds)
{code}
Starting form Drill 1.13 the empty directory is a schemaless table in Drill,
see more:
https://drill.apache.org/docs/data-sources-and-file-formats-introduction/#schemaless-tables
> 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
> Assignee: Hanifi Gunes
> Priority: Major
> Fix For: 1.4.0
>
>
> {{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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