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ASF GitHub Bot commented on DRILL-4963: --------------------------------------- Github user asfgit closed the pull request at: https://github.com/apache/drill/pull/701 > Issues when overloading Drill native functions with dynamic UDFs > ---------------------------------------------------------------- > > Key: DRILL-4963 > URL: https://issues.apache.org/jira/browse/DRILL-4963 > Project: Apache Drill > Issue Type: Bug > Components: Functions - Drill > Affects Versions: 1.9.0 > Reporter: Roman > Assignee: Arina Ielchiieva > Labels: ready-to-commit > Fix For: Future > > Attachments: subquery_udf-1.0.jar, subquery_udf-1.0-sources.jar, > test_overloading-1.0.jar, test_overloading-1.0-sources.jar > > > I created jar file which overloads 3 DRILL native functions > (LOG(VARCHAR-REQUIRED), CURRENT_DATE(VARCHAR-REQUIRED) and > ABS(VARCHAR-REQUIRED,VARCHAR-REQUIRED)) and registered it as dynamic UDF. > If I try to use my functions I will get errors: > {code:xml} > SELECT CURRENT_DATE('test') FROM (VALUES(1)); > {code} > Error: FUNCTION ERROR: CURRENT_DATE does not support operand types (CHAR) > SQL Query null > {code:xml} > SELECT ABS('test','test') FROM (VALUES(1)); > {code} > Error: FUNCTION ERROR: ABS does not support operand types (CHAR,CHAR) > SQL Query null > {code:xml} > SELECT LOG('test') FROM (VALUES(1)); > {code} > Error: SYSTEM ERROR: DrillRuntimeException: Failure while materializing > expression in constant expression evaluator LOG('test'). Errors: > Error in expression at index -1. Error: Missing function implementation: > castTINYINT(VARCHAR-REQUIRED). Full expression: UNKNOWN EXPRESSION. > But if I rerun all this queries after "DrillRuntimeException", they will run > correctly. It seems that Drill have not updated the function signature before > that error. Also if I add jar as usual UDF (copy jar to > /drill_home/jars/3rdparty and restart drillbits), all queries will run > correctly without errors. -- This message was sent by Atlassian JIRA (v6.3.15#6346)