[jira] [Updated] (NIFI-4647) ConvertAvroToORC fails if the avro schema uses a union of a null, string, and long

["Matt Burgess (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-4647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Burgess updated NIFI-4647:
-------------------------------
    Affects Version/s:     (was: 1.4.0)
               Status: Patch Available  (was: In Progress)

> ConvertAvroToORC fails if the avro schema uses a union of a null, string, and long
> ----------------------------------------------------------------------------------
>
>                 Key: NIFI-4647
>                 URL: https://issues.apache.org/jira/browse/NIFI-4647
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>            Reporter: Benjamin Garrett
>            Assignee: Matt Burgess
>            Priority: Major
>
> If an avro schema has a field defined like this:
> {"name":"myStringOrLong","type":["null","string","long"],"default":null}
> then when we run ConvertAvroToORC we get the following error:
> Object Type for class org.apache.avro.util.Utf8 not in Union declaration
> This is because Avro uses its internal Utf8 class (instead of 'String') as a performance optimization as discussed elsewhere on the internet, such as here:  http://apache-avro.679487.n3.nabble.com/why-Utf8-vs-String-td3247788.html
> but the NiFiOrcUtils class is not expecting the Utf8 class to be used for 'string' types. 
> A simple workaround is to modify NiFiOrcUtils lines 72-73 to be something like this:
>                 Class clazzToCompareTo = o.getClass();
>                 if (o instanceof org.apache.avro.util.Utf8 ) {
>                   clazzToCompareTo = String.class;
>                 }
>                 TypeInfo objectTypeInfo = TypeInfoUtils.getTypeInfoFromObjectInspector(
>                         ObjectInspectorFactory.getReflectionObjectInspector(
>                             clazzToCompareTo, ObjectInspectorFactory.ObjectInspectorOptions.JAVA));
> This solution works for me.



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