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https://issues.apache.org/jira/browse/AVRO-1886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suraj Acharya updated AVRO-1886:
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{code})
> Improve error reporting for schema validation
> ---------------------------------------------
>
> Key: AVRO-1886
> URL: https://issues.apache.org/jira/browse/AVRO-1886
> Project: Avro
> Issue Type: Improvement
> Components: ruby
> Reporter: Miroslav Csonka
> Assignee: Miroslav Csonka
> Fix For: 1.9.0, 1.8.2
>
>
> In Funding Circle we use avro schema to validate some financial data and
> we've found ourselves wondering what is invalid. We've noticed that avro
> [does already
> validation|https://github.com/apache/avro/blob/master/lang/ruby/lib/avro/schema.rb#L94],
> but does not report what fields are invalid, so we've decided to change it
> and we use Avro as a validation library.
> h5. What error messages to expect?
> We communicate errors for a given payload in format "at <path> <expected>
> <received>".
> For <path> we've decided to use syntax similar to json path:
> * . refers to root
> * \[0\] first index in array
> * .age would match 42 from {"age": 42}
> Error within object *person* and his optional array *houses* on *second item*
> with key *number_of_rooms*:
> {quote}
> at .person.houses\[1\].number_of_rooms expected type long, got string
> with value "not valid at all"
> {quote}
> Example of multiple errors for a single payload:
> {quote}
> at .\[0\] expected type int, got null
> at .\[1\] expected type int, got string with value \"e\"
> {quote}
> More examples can be seen at
> https://github.com/apache/avro/pull/111/files#diff-830ac80276854fceefa3f92c346d165f
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