Scott Stults created GORA-257:
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Summary: Use separate class loaders for each module
Key: GORA-257
URL: https://issues.apache.org/jira/browse/GORA-257
Project: Apache Gora
Issue Type: Improvement
Components: gora-core, maven, storage
Reporter: Scott Stults
Fix For: 0.5
Some modules require conflicting versions of dependent libraries. For example,
HBase and Solr require conflicting versions of the Zookeeper client library. In
order to use both stores in the same VM they should each load and use their own
version of the library. Decoupling the module dependencies from the core of
Gora allows for independent versioning as well as multiple versions.
To accomplish this, each module needs its own class loader. I think this could
be done in one of two places: Either Gora core creates the class loader and
assigns it to a module, or each module starts with a pared-down class with no
external library dependencies and creates a class loader for the rest.
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