Paul Tzen created AVRO-2907:
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Summary: Ruby schema.single_object_schema_fingerprint is reversed
Key: AVRO-2907
URL: https://issues.apache.org/jira/browse/AVRO-2907
Project: Apache Avro
Issue Type: Bug
Components: ruby
Affects Versions: 1.10.0
Reporter: Paul Tzen
The Ruby
[schema.single_object_schema_fingerprint|https://github.com/apache/avro/blob/release-1.10.0/lang/ruby/lib/avro/schema.rb#L180]
method (originally added in [this PR|https://github.com/apache/avro/pull/317])
seems to return an incorrect fingerprint, which is reversed from what the [Java
implementation|https://github.com/apache/avro/blob/release-1.10.0/lang/java/avro/src/main/java/org/apache/avro/SchemaNormalization.java#L64]
returns.
I believe that the cause is the unnecessary reverse array traversal order on
[this
line|https://github.com/apache/avro/blob/release-1.10.0/lang/ruby/lib/avro/schema.rb#L184]
during the bit masking + shifting operation for converting the fingerprint
into a little endian byte array.
I'll also drop a comment in the [original
PR|https://github.com/apache/avro/pull/317] that implements this Ruby
functionality and see if there's more to the story.
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