[DRILL-2243] Table created as cast of literal to any decimal type either can not be read back or produces incrorrect result

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Duplicate
• Affects Version/s: 0.8.0
• Fix Version/s: 0.9.0
• Component/s: Storage - Parquet
• Assignee: Abdel Hakim Deneche
• Reporter: Victoria Markman
• Created: 13/Feb/15 19:30
• Updated: 24/Apr/15 20:33
• Resolved: 26/Mar/15 22:34

Description

This bug looks suspiciously similar to drill-2220, but assert is different + wrong result.

Decimal9 : failure to read from the table

0: jdbc:drill:schema=dfs> select cast('1.2' as decimal(8,2)) from `test.json`;
+------------+
|   EXPR$0   |
+------------+
| 1.20       |
| 1.20       |
| 1.20       |
| 1.20       |
| 1.20       |
| 1.20       |
+------------+
6 rows selected (0.081 seconds)

0: jdbc:drill:schema=dfs> create table temp(c1) as select cast('1.2' as decimal(8,2)) from `test.json`;
+------------+---------------------------+
|  Fragment  | Number of records written |
+------------+---------------------------+
| 0_0        | 6                         |
+------------+---------------------------+
1 row selected (0.193 seconds)

0: jdbc:drill:schema=dfs> select * from temp;
Query failed: RemoteRpcException: Failure while running fragment., org.apache.drill.exec.vector.Decimal9Vector cannot be cast to org.apache.drill.exec.vector.IntVector [ 33d801e0-a1d4-4999-9aac-e35f445018bb on atsqa4-133.qa.lab:31010 ]
[ 33d801e0-a1d4-4999-9aac-e35f445018bb on atsqa4-133.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query. (state=,code=0)

Decimal18 : failure to read from the table

0: jdbc:drill:schema=dfs> select cast('1.2' as decimal(18,2)) from `test.json`;
+------------+
|   EXPR$0   |
+------------+
| 1.20       |
| 1.20       |
| 1.20       |
| 1.20       |
| 1.20       |
| 1.20       |
+------------+
6 rows selected (0.064 seconds)

0: jdbc:drill:schema=dfs> create table temp1(c1) as select cast('1.2' as decimal(18,2)) from `test.json`;
+------------+---------------------------+
|  Fragment  | Number of records written |
+------------+---------------------------+
| 0_0        | 6                         |
+------------+---------------------------+
1 row selected (0.257 seconds)

0: jdbc:drill:schema=dfs> select * from temp1;
Query failed: RemoteRpcException: Failure while running fragment., org.apache.drill.exec.vector.Decimal18Vector cannot be cast to org.apache.drill.exec.vector.BigIntVector [ 5a23c757-9723-43cc-874b-18aaf62640a4 on atsqa4-133.qa.lab:31010 ]
[ 5a23c757-9723-43cc-874b-18aaf62640a4 on atsqa4-133.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query. (state=,code=0)

Decimal28 : wrong result

0: jdbc:drill:schema=dfs> create table temp2(c1) as select cast('1.2' as decimal(28,2)) from `test.json`;
+------------+---------------------------+
|  Fragment  | Number of records written |
+------------+---------------------------+
| 0_0        | 6                         |
+------------+---------------------------+
1 row selected (0.194 seconds)

0: jdbc:drill:schema=dfs> select * from temp2;
+------------+
|     c1     |
+------------+
| 12000000.00 |
| 12000000.00 |
| 12000000.00 |
| 12000000.00 |
| 12000000.00 |
| 12000000.00 |
+------------+
6 rows selected (0.057 seconds)

Decimal38: wrong result

0: jdbc:drill:schema=dfs> create table temp4(c1) as select cast('1.2' as decimal(38,2)) from `test.json`;
+------------+---------------------------+
|  Fragment  | Number of records written |
+------------+---------------------------+
| 0_0        | 6                         |
+------------+---------------------------+
1 row selected (0.214 seconds)

0: jdbc:drill:schema=dfs> select * from temp4;
+------------+
|     c1     |
+------------+
| 12000000.00 |
| 12000000.00 |
| 12000000.00 |
| 12000000.00 |
| 12000000.00 |
| 12000000.00 |
+------------+
6 rows selected (0.048 seconds)

Issue Links

• duplicates: DRILL-2220 Complex reader unable to read FIXED_LEN_BYTE_ARRAY types in parquet file
• duplicates: DRILL-2253 Vectorized Parquet reader fails to read correctly against RLE Dictionary encoded DATE column