[jira] [Assigned] (IMPALA-11854) ImpalaStringWritable's underlying array can't be changed in UDFs

["Peter Rozsa (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-11854?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Peter Rozsa reassigned IMPALA-11854:
------------------------------------

    Assignee: Peter Rozsa

> ImpalaStringWritable's underlying array can't be changed in UDFs
> ----------------------------------------------------------------
>
>                 Key: IMPALA-11854
>                 URL: https://issues.apache.org/jira/browse/IMPALA-11854
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Frontend
>    Affects Versions: Impala 4.3.0
>            Reporter: Peter Rozsa
>            Assignee: Peter Rozsa
>            Priority: Major
>
> ImpalaStringWritable's getBytes() implementation returns the copy of the underlying buffer, therefore the original value can't be changed. This behavior makes UDFs work erroneously when they contain operations that would change the BINARY/TEXT arguments. For example: 
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/udf/esri/ST_SetSRID.java#L47]
> where the incoming `geomref` argument should change, but it gets returned unchanged.



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