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https://issues.apache.org/jira/browse/DRILL-3902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16711721#comment-16711721
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Vitalii Diravka commented on DRILL-3902:
----------------------------------------
It was solved in scope of DRILL-5546 and DRILL-4185.
{code:java}
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 Drill schemaless table, see
more:
[https://drill.apache.org/docs/data-sources-and-file-formats-introduction/#schemaless-tables]
> Bad error message: core cause not included in text; maybe wrong kind
> ---------------------------------------------------------------------
>
> Key: DRILL-3902
> URL: https://issues.apache.org/jira/browse/DRILL-3902
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Daniel Barclay
> Priority: Major
> Fix For: 1.13.0
>
>
> When trying to use an empty directory as a table causes Drill to fail by
> hitting an IndexOutOfBoundsException, the final error message includes the
> text from the IndexOutOfBoundsException's getMessage()--but fails to mention
> IndexOutOfBoundsException itself (or equivalent information):
> {noformat}
> 0: jdbc:drill:zk=localhost:2181> SELECT * FROM
> `dfs`.`root`.`/tmp/empty_directory`;
> Error: VALIDATION ERROR: Index: 0, Size: 0
> [Error Id: 66ff61ed-ea41-4af9-87c5-f91480ef1b21 on dev-linux2:31010]
> (state=,code=0)
> 0: jdbc:drill:zk=localhost:2181>
> {noformat}
> Also, since this isn't a coherent/intentional validation error but an
> internal error, shouldn't this be a SYSTEM ERROR message?
> (Does the SYSTEM ERROR case including the exception class name in the
> message?)
> Daniel
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