Nick Dimiduk created HBASE-8386:
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Summary: deprecate TableMapReduce.addDependencyJars(Configuration,
class<?> ...)
Key: HBASE-8386
URL: https://issues.apache.org/jira/browse/HBASE-8386
Project: HBase
Issue Type: Bug
Components: mapreduce
Reporter: Nick Dimiduk
We expose two public static methods names {{addDependencyJars}}. One of them,
{{void addDependencyJars(Job}}, is very helpful -- goes out of its way to
detect job dependencies as well as shipping all the necessary HBase
dependencies. The other is shfty and nefarious, {{void
addDependencyJars(Configuration, Class<?>...)}} -- it only adds exactly what
the user requests, forcing them to resolve dependencies themselves and giving a
false sense of security. We should deprecate the latter throw a big giant
warning when people use that one. The handy functionality of providing help
when our heuristics fail can be added via a new method signature, something
like {{void addDependencyJars(Job, Class<?> ...}}. This method would do
everything {{void addDependencyJars(Job}} does, plus let the user specify
arbitrary additional classes. That way HBase still can help the user, but also
gives them super-powers to compensate for when our heuristics fail.
For reference, this appears to be the reason why HBase + Pig doesn't really
work out of the box. See
[HBaseStorage.java|https://github.com/apache/pig/blob/trunk/src/org/apache/pig/backend/hadoop/hbase/HBaseStorage.java#L730]
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