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https://issues.apache.org/jira/browse/AVRO-906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13121002#comment-13121002
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Douglas Kaminsky commented on AVRO-906:
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Thanks for the quick response. As an FYI, our use case is concerned with having
a reliably reproducible string representation that we can use to create an MD5
hash for comparison. We don't rely on it for any other runtime behaviors.
> Inconsistent ordering of field props
> -------------------------------------
>
> Key: AVRO-906
> URL: https://issues.apache.org/jira/browse/AVRO-906
> Project: Avro
> Issue Type: Bug
> Components: java
> Reporter: Douglas Kaminsky
> Assignee: Doug Cutting
> Fix For: 1.6.0
>
> Attachments: AVRO-906.patch, PTest.java
>
>
> When a schema/protocol is written and read back in (see attached example) via
> Protocol.parse, the field ordering is not guaranteed to be preserved because
> the "Props" object extends HashMap, which has no ordering contract.
> Recommend switching to a Map implementation with an ordering guarantee.
> (Identified in Avro 1.5.1 - please verify against 1.5.4)
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