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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (AVRO-447) document protocol system error
Date Wed, 03 Mar 2010 17:30:27 GMT

     [ https://issues.apache.org/jira/browse/AVRO-447?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Doug Cutting reassigned AVRO-447:

    Assignee: Doug Cutting

> document protocol system error
> ------------------------------
>                 Key: AVRO-447
>                 URL: https://issues.apache.org/jira/browse/AVRO-447
>             Project: Avro
>          Issue Type: Bug
>          Components: spec
>    Affects Versions: 1.3.0
>            Reporter: Doug Cutting
>            Assignee: Doug Cutting
> Currently Java internally adds a type at the start of each protocol message's error list
for system errors.  This is used when an exception is encountered on the server while executing
an RPC that does not match one of the messages declared errors.  The type is "string", so
it will never conflict with another error, since all other errors are defined as records.
> For example, if a protocol has a message like:
> {code}
> "foo": {
>   "request": [],
>   "response": "null",
>   "errors": ["MyError"]
> }
> {code}
> Then errors are written and read with the schema ["string", "MyError"], although that
schema never appears publicly.
> This should either be documented or changed.

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