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Posted to dev@avro.apache.org by "Doug Cutting (JIRA)" <ji...@apache.org> on 2010/10/29 23:32:21 UTC
[jira] Resolved: (AVRO-642) Prettify the json dumped during
exceptions while validating a writer/reader schema
[ https://issues.apache.org/jira/browse/AVRO-642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Doug Cutting resolved AVRO-642.
-------------------------------
Resolution: Fixed
Hadoop Flags: [Reviewed]
I committed this. Thanks, Harsh.
> Prettify the json dumped during exceptions while validating a writer/reader schema
> ----------------------------------------------------------------------------------
>
> Key: AVRO-642
> URL: https://issues.apache.org/jira/browse/AVRO-642
> Project: Avro
> Issue Type: Improvement
> Components: java, python
> Affects Versions: 1.3.3
> Environment: Avro-Trunk
> Reporter: Harsh J Chouraria
> Assignee: Harsh J Chouraria
> Priority: Minor
> Fix For: 1.5.0
>
> Attachments: avro.java.schema.pretty.r1.diff, avro.py.schema.pretty.r1.diff, avro.schema.pretty.r2.diff, avro.schema.pretty.r3.diff, avro.schema.pretty.r4.diff, avro.schema.pretty.r5.diff
>
> Original Estimate: 0.02h
> Remaining Estimate: 0.02h
>
> Right now the exception that's thrown when a reader and written schema don't match (while reading a file), looks like this:
> {noformat}
> Found {"type":"record","name":"Test","fields":[{"name":"stringField","type":"string"},{"name":"longField","type":"long"}]}, expecting {"type":"record","name":"Test1","fields":[{"name":"stringField","type":"string"},{"name":"longField","type":"long"}]}
> {noformat}
> While this is perfectly okay for small schema with a few fields, it gets hard to debug for complex and large ones.
> The attached patch changes the exception message to look like:
> {noformat}
> Found {
> "type" : "record",
> "name" : "Test",
> "fields" : [ {
> "name" : "stringField",
> "type" : "string"
> }, {
> "name" : "longField",
> "type" : "long"
> } ]
> }, expecting {
> "type" : "record",
> "name" : "Test1",
> "fields" : [ {
> "name" : "stringField",
> "type" : "string"
> }, {
> "name" : "longField",
> "type" : "long"
> } ]
> }
> {noformat}
> P.s. Ideally a diff-like message would help too, but its mileage may vary. I guess with the pretty output printed, a user may easily do a diff (since they now have newlines), so us providing this is not _really_ needed.
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