gaoxiaoqing created IMPALA-11728:
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Summary: Set fallback database for functions
Key: IMPALA-11728
URL: https://issues.apache.org/jira/browse/IMPALA-11728
Project: IMPALA
Issue Type: New Feature
Reporter: gaoxiaoqing
Assignee: gaoxiaoqing
{code:java}
CREATE FUNCTION default.function_name([arg_type[, arg_type...])
RETURNS return_type
LOCATION 'hdfs_path_to_dot_so'
SYMBOL='symbol_name' {code}
{noformat}
use functional;
select function_name();
ERROR: AnalysisException: functional.function_name() unknown for database
rawdata.{noformat}
The create function statement can only works on specified default database.
Add a fallback database for functions as query option. It works on all database
without changing query.
{noformat}
use functional;
set db_name_with_global_udf=default;
select function_name(); // It works.{noformat}
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