[DRILL-986] Explicit cast of empty string to double/integer throws NumberFormatException

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Fix Version/s: 0.4.0
• Component/s: Functions - Drill
• Assignee: Mehant Baid
• Reporter: Abhishek Girish
• Created: 14/Jun/14 00:44
• Updated: 24/Apr/15 23:14
• Resolved: 02/Jul/14 01:50

Description

While running TPC-DS queries we hit an issue while reading Parquet. When narrowed down, it was seen to be an issue with explicit cast when data files consist of null/empty strings.

SqlLine error:
> select cast('' as integer) from `/user/root/item.tbl` limit 1;
Query failed: org.apache.drill.exec.rpc.RpcException: Remote failure while running query.[error_id: "7c691e59-6998-4f5d-bd89-0b3635709aea"
endpoint {
address: "drillats2.qa.lab"
user_port: 31010
control_port: 31011
data_port: 31012
}
error_type: 0
message: "Failure while running fragment. < NumberFormatException:[ ]"
]
Error: exception while executing query (state=,code=0)
0: jdbc:drill:schema=dfs.drillTestDirTPCDS> select cast('' as double) from `/user/root/item.tbl` limit 1;
Query failed: org.apache.drill.exec.rpc.RpcException: Remote failure while running query.[error_id: "ce1b91bd-1892-434e-88e4-a535541888c0"
endpoint {
address: "drillats2.qa.lab"
user_port: 31010
control_port: 31011
data_port: 31012
}
error_type: 0
message: "Failure while running fragment. < NumberFormatException:[ empty String ]"
]
Error: exception while executing query (state=,code=0)

Issue Links

• duplicates: DRILL-975 Null-on-exception option for cast functions