Should MetricsContainer actually be Serializable?
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bug
core
java
P3
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- Java
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Description
Interface MetricsContainer extends Serializable but does not explain why. While it does seem like an interface where some implementations will be serialized and shipped, it does not seem like an inherent property of a MetricsContainer. In particular, Dataflow worker has some implementations that are _not_ serializable, and findbugs noticed.
Imported from Jira [BEAM-6573](https://issues.apache.org/jira/browse/BEAM-6573). Original Jira may contain additional context.
Reported by: kenn.
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