Reset ArenaPool after use #250
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I believe we are hitting a memory leak in
fastjsondiscussed here: valyala/fastjson#24This PR resets the
fastjson.ArenaPoolobject after using it. It means we won't get cache hits across calls toMarshalJSONbut given the cardinality of the data in blocks and transactions, I expect the impact to be minimal.Happy to discuss if my assumption if incorrect.