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https://issues.apache.org/jira/browse/AVRO-1694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14742140#comment-14742140
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Sean Busbey commented on AVRO-1694:
-----------------------------------
copy of my comment from PR-40:
{quote}
I used the proposed tool in [AVRO-1738]() and IRB to verify the given MD5 and
SHA-256 for the int schema and things look fine.
{code}
busbey2-MBA:avro-help busbey$ echo '"int"' | java -jar
avro-tools-1.9.0-SNAPSHOT.jar fingerprint -
8f5c393f1ad57572 -
busbey2-MBA:avro-help busbey$ echo '{"type":"int"}' | java -jar
avro-tools-1.9.0-SNAPSHOT.jar fingerprint -
8f5c393f1ad57572 -
busbey2-MBA:avro-help busbey$ echo '{"type":"int"}' | java -jar
avro-tools-1.9.0-SNAPSHOT.jar fingerprint --fingerprint MD5 -
ef524ea1b91e73173d938ade36c1db32 -
busbey2-MBA:avro-help busbey$ echo '"int"' | java -jar
avro-tools-1.9.0-SNAPSHOT.jar fingerprint --fingerprint MD5 -
ef524ea1b91e73173d938ade36c1db32 -
busbey2-MBA:avro-help busbey$ echo '"int"' | java -jar
avro-tools-1.9.0-SNAPSHOT.jar fingerprint --fingerprint SHA-256 -
3f2b87a9fe7cc9b13835598c3981cd45e3e355309e5090aa0933d7becb6fba45 -
busbey2-MBA:avro-help busbey$ irb
jruby-1.7.3 :001 > 'ef524ea1b91e73173d938ade36c1db32'.to_i(16)
=> 318112854175969537208795771590915775282
jruby-1.7.3 :002 >
'3f2b87a9fe7cc9b13835598c3981cd45e3e355309e5090aa0933d7becb6fba45'.to_i(16)
=>
28572620203319713300323544804233350633246234624932075150020181448463213378117
{code}
I'd like some additional test schemas, but I'm fine with those as a follow-on.
As an aside, from looking at the shared test data for schema normalization it's
going to be awkward to use as-is since it relies on converting to signed-longs
instead of a hex string.
I'll push this in a bit unless someone else has concerns.
{quote}
> Support for schema fingerprints in the Ruby library
> ---------------------------------------------------
>
> Key: AVRO-1694
> URL: https://issues.apache.org/jira/browse/AVRO-1694
> Project: Avro
> Issue Type: Wish
> Components: ruby
> Reporter: Daniel Schierbeck
> Assignee: Daniel Schierbeck
> Fix For: 1.7.8, 1.8.0, 1.9.0
>
> Attachments: AVRO-1694.1.patch
>
>
> There does not seem to be any support for generating schema fingerprints in
> the Ruby library. In order to avoid inlining schemas in my Avro-encoded
> messages I'd like to store them separately and instead write the fingerprint
> in the Avro metadata, thus allowing a reader to fetch and cache the actual
> schema from the schema registry.
> In order for that to work, my Ruby writer needs to be able to actually
> generate a fingerprint for a schema.
> Is the Ruby library being actively maintained? I would be willing to work on
> this myself if someone would review and merge the work.
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