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https://issues.apache.org/jira/browse/DRILL-2408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deneche A. Hakim updated DRILL-2408:
------------------------------------
Description:
{noformat}
0: jdbc:drill:schema=dfs> select c_integer, c_bigint, c_date, c_time, c_varchar
from j4 where c_bigint is null;
+------------+------------+------------+------------+------------+
| c_integer | c_bigint | c_date | c_time | c_varchar |
+------------+------------+------------+------------+------------+
+------------+------------+------------+------------+------------+
No rows selected (0.126 seconds)
0: jdbc:drill:schema=dfs> create table ctas_t6(c1,c2,c3,c4,c5) as select
c_integer, c_bigint, c_date, c_time, c_varchar from j4 where c_bigint is null;
+------------+---------------------------+
| Fragment | Number of records written |
+------------+---------------------------+
| 0_0 | 0 |
+------------+---------------------------+
1 row selected (0.214 seconds)
0: jdbc:drill:schema=dfs> select * from ctas_t6;
Query failed: IndexOutOfBoundsException: Index: 0, Size: 0
Error: exception while executing query: Failure while executing query.
(state=,code=0)
{noformat}
was:
We should not be creating 0 length parquet files; subsequent queries on these
will fail with the error shown below.
{code}
0: jdbc:drill:zk=local> create table tt5 as select * from
cp.`tpch/region.parquet` where 1=0;
+------------+---------------------------+
| Fragment | Number of records written |
+------------+---------------------------+
| 0_0 | 0 |
+------------+---------------------------+
1 row selected (0.8 seconds)
0: jdbc:drill:zk=local> select count(*) from tt5;
Query failed: RuntimeException: file:/tmp/tt5/0_0_0.parquet is not a Parquet
file (too small)
Error: exception while executing query: Failure while executing query.
{code}
> CTAS should not create empty folders when underlying query returns no results
> -----------------------------------------------------------------------------
>
> Key: DRILL-2408
> URL: https://issues.apache.org/jira/browse/DRILL-2408
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Writer
> Affects Versions: 0.8.0
> Reporter: Aman Sinha
> Assignee: Deneche A. Hakim
> Priority: Critical
> Fix For: 0.9.0
>
> Attachments: DRILL-2408.1.patch.txt, DRILL-2408.2.patch.txt,
> DRILL-2408.3.patch.txt
>
>
> {noformat}
> 0: jdbc:drill:schema=dfs> select c_integer, c_bigint, c_date, c_time,
> c_varchar from j4 where c_bigint is null;
> +------------+------------+------------+------------+------------+
> | c_integer | c_bigint | c_date | c_time | c_varchar |
> +------------+------------+------------+------------+------------+
> +------------+------------+------------+------------+------------+
> No rows selected (0.126 seconds)
> 0: jdbc:drill:schema=dfs> create table ctas_t6(c1,c2,c3,c4,c5) as select
> c_integer, c_bigint, c_date, c_time, c_varchar from j4 where c_bigint is null;
> +------------+---------------------------+
> | Fragment | Number of records written |
> +------------+---------------------------+
> | 0_0 | 0 |
> +------------+---------------------------+
> 1 row selected (0.214 seconds)
> 0: jdbc:drill:schema=dfs> select * from ctas_t6;
> Query failed: IndexOutOfBoundsException: Index: 0, Size: 0
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> {noformat}
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