Gabriel Reid created CRUNCH-71:
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Summary: PType mapping functions are not initialized before being
used for deep copying
Key: CRUNCH-71
URL: https://issues.apache.org/jira/browse/CRUNCH-71
Project: Crunch
Issue Type: Bug
Affects Versions: 0.3.0
Reporter: Gabriel Reid
Assignee: Gabriel Reid
The PType#getDetachedValue method performs a deep copy (if needed) in order to
allow DoFns to hold on to values that have been passed through them (for
example, in join functions).
The WritablePType class uses the built-in input and output MapFns in the PType
to handle this deep copying, but the input and output MapFns don't get
initialized (i.e. initialize isn't called on them) after they are deserialized
along with the DoFn that is using them. In some rare cases (at least for
tuples), this can result in NullPointerExceptions or other nastiness.
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