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From "Mark Payne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NIFI-4215) Avro schemas with records that have a field of themselves fail to parse, causing stackoverflow exception
Date Tue, 01 Aug 2017 13:55:00 GMT

    [ https://issues.apache.org/jira/browse/NIFI-4215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16108935#comment-16108935
] 

Mark Payne commented on NIFI-4215:
----------------------------------

Also changed priority of this from Minor to Blocker because I don't think we can release this
as-is. Any flow that attempts to write schema information from the local avro schema registry
will fail.

> Avro schemas with records that have a field of themselves fail to parse, causing stackoverflow
exception
> --------------------------------------------------------------------------------------------------------
>
>                 Key: NIFI-4215
>                 URL: https://issues.apache.org/jira/browse/NIFI-4215
>             Project: Apache NiFi
>          Issue Type: Bug
>    Affects Versions: 1.4.0
>            Reporter: Wesley L Lawrence
>            Priority: Blocker
>             Fix For: 1.4.0
>
>         Attachments: nifi-4215.patch
>
>
> Noticed this while attempting to use the AvroSchemaRegsitry with some complex schema.
Boiled down, Avro lets you define a schema such as;
> {code}
> { 
>   "namespace": "org.apache.nifi.testing", 
>   "name": "CompositRecord", 
>   "type": "record", 
>   "fields": [ 
>     { 
>       "name": "id", 
>       "type": "int" 
>     }, 
>     { 
>       "name": "value", 
>       "type": "string" 
>     }, 
>     { 
>       "name": "parent", 
>       "type": [
>         "null",
>         "CompositRecord"
>       ]
>     } 
>   ] 
> }
> {code}
> The AvroSchemaRegistry (AvroTypeUtil specifically) will fail to parse, and generate a
stackoverflow exception.
> I've whipped up a fix, tested it out in 1.4.0, and am just running through the contrib
build before I submit a patch.



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