Doug Cutting created AVRO-1283:
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Summary: remove static caches from GenericData, SpecificData and
ReflectData
Key: AVRO-1283
URL: https://issues.apache.org/jira/browse/AVRO-1283
Project: Avro
Issue Type: Improvement
Reporter: Doug Cutting
Currently GenericData, ReflectData and SpecificData are often treated as
singletons, through an instance returned by a static get() method. Because of
this, the caches they have must be thread-safe and are also memory leaks.
Increasingly of late, new instances of these are allocated for use by a given
DatumReader or DatumWriter. This issue explores whether we can:
- Change the static get() methods to always return new instances, so that each
DatumReader and DatumWriter has its own instance. Since DatumReader and
DatumWriter are not thread-safe, the thread safety requirement could then be
removed from caches, increasing their performance; and
- Change caches to be non-static, to remove potential memory leaks.
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