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Posted to dev@drill.apache.org by "Aman Sinha (JIRA)" <ji...@apache.org> on 2015/02/12 08:48:11 UTC
[jira] [Created] (DRILL-2223) Empty parquet file created with Limit
0 query errors out when querying
Aman Sinha created DRILL-2223:
---------------------------------
Summary: Empty parquet file created with Limit 0 query errors out when querying
Key: DRILL-2223
URL: https://issues.apache.org/jira/browse/DRILL-2223
Project: Apache Drill
Issue Type: Bug
Components: Storage - Parquet
Affects Versions: 0.7.0
Reporter: Aman Sinha
Assignee: Steven Phillips
Doing a CTAS with limit 0 creates a 0 length parquet file which errors out during querying. This should at least write the schema information and metadata which will allow queries to run.
{code}
0: jdbc:drill:zk=local> create table tt_nation2 as select n_nationkey, n_name, n_regionkey from cp.`tpch/nation.parquet` limit 0;
+------------+---------------------------+
| Fragment | Number of records written |
+------------+---------------------------+
| 0_0 | 0 |
+------------+---------------------------+
1 row selected (0.315 seconds)
0: jdbc:drill:zk=local> select n_nationkey from tt_nation2;
Query failed: RuntimeException: file:/tmp/tt_nation2/0_0_0.parquet is not a Parquet file (too small)
{code}
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