Tatu Saloranta created CASSANDRA-16854:
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Summary: Exclude Jackson 1.x dependency that leaks via old
hadoop-core dependency
Key: CASSANDRA-16854
URL: https://issues.apache.org/jira/browse/CASSANDRA-16854
Project: Cassandra
Issue Type: Improvement
Components: Dependencies
Reporter: Tatu Saloranta
Assignee: Tatu Saloranta
build.xml has a dependency for an old hadoop-core version (1.0.3). This is
likely needed for some Hadoop compatibility code under
`src/java/org/apache/cassandra/hadoop`. Since 1.0.3 was released in 2012, its
dependencies are very old; in particular it depends on "jackson-mapper-asl"
1.0.1 (from 2009!).
An earlier issue CASSANDRA-15867 referenced this dependency as well (but did
not actually remove it for some reason, which marked as resolved).
Although `hadoop-core` dependency is marked as "provided" (and should then not
be included in distributed version) it seems best to avoid downloading it
during build to "build/lib/jars". This can be done by adding 2 exclusions for
"hadoop-core" and "hadoop-minicluster" dependencies in build.xml.
I will provide a patch.
I also tried updating "hadoop-core" to the latest public version (1.2.1), which
would have upgraded jackson-mapper-asl to 1.8.8, but that breaks the build due
to some other version incompatibility (asm, possibly). If anyone wants to
tackle that issue it could be a good follow-up task; "hadoop-core" itself has
been moved to "hadoop-client" it seems (and there's "hadoop-commons" too...
confusing).
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