Rohini Palaniswamy created PIG-4039:
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Summary: New interface for resetting static variables
Key: PIG-4039
URL: https://issues.apache.org/jira/browse/PIG-4039
Project: Pig
Issue Type: Sub-task
Reporter: Rohini Palaniswamy
Fix For: 0.14.0
In Tez, when there is container reuse, static variables, thread locals, etc
have to be reinitialized to avoid memory leak or having wrong values. For the
short term, we ended up making some of the static variables public or adding
destroy method to each class which is hacky. Also it does not help users who
will want something similar to be done in their UDFs or LoadFunc. Need to
define a interface with a reset/destroy method and find all loaded classes
implementing that interface and call destroy on them in PigProcessor.close().
ServiceLoader and annotations are some of the ways to find classes implementing
an interface and there are other libraries as well. Need to find the best and
fastest way to do that.
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