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https://issues.apache.org/jira/browse/CASSANDRA-4097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13243899#comment-13243899
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Andrew Swan commented on CASSANDRA-4097:
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In the {{lib}} folder there are two files with "{{avro}}" in the name:
* {{lib/avro-1.4.0-fixes.jar}}
* {{lib/avro-1.4.0-sources-fixes.jar}}
The latter JAR file indeed contains the source code for the classes that need
their packages changed, but this JAR file looks to be a build artifact (e.g. it
has a generated manifest file), not a genuine source folder. Surely that source
is elsewhere. If I'm to contribute a patch that moves these classes, I'm going
to need to change the real source files, not just the contents of this JAR
file, correct?
> Classes in org.apache.cassandra.deps:avro:1.4.0-cassandra-1 clash with core
> Avro classes
> ----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-4097
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4097
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.7.0
> Reporter: Andrew Swan
> Priority: Minor
>
> Cassandra has this dependency:
> {code:title=build.xml}...
> <dependency groupId="org.apache.cassandra.deps" artifactId="avro"
> version="1.4.0-cassandra-1">
> ...{code}
> Unfortunately this JAR file contains classes in the {{org.apache.avro}}
> package that are incompatible with classes of the same fully-qualified name
> in the current release of Avro. For example, the inner class
> {{org.apache.avro.Schema$Parser}} found in Avro 1.6.1 is missing from the
> Cassandra version of that class. This makes it impossible to have both
> Cassandra and the latest Avro version on the classpath (my use case is an
> application that embeds Cassandra but also uses Avro 1.6.1 for unrelated
> serialization purposes). A simple and risk-free solution would be to change
> the package declaration of Cassandra's Avro classes from {{org.apache.avro}}
> to (say) {{org.apache.cassandra.avro}}, assuming that the above dependency is
> only used by Cassandra and no other projects (which seems a reasonable
> assumption given its name).
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