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https://issues.apache.org/jira/browse/THRIFT-10?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Johan Stuyts updated THRIFT-10:
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Attachment: ImmutableProtocolComponentDescriptors2.patch
Make the component descriptors used by protocols in package
{{com.facebook.thrift.protocol}} immutable. This allows singleton, constant
instances to be used during serialization, and during deserialization if a
non-reflective protocol is used.
I do not expect a performance boost. It is a minor optimization (and might even
be a micro-optimization).
> Descriptors used during serialization should be immutable objects
> -----------------------------------------------------------------
>
> Key: THRIFT-10
> URL: https://issues.apache.org/jira/browse/THRIFT-10
> Project: Thrift
> Issue Type: Improvement
> Components: Library (Java)
> Reporter: Johan Stuyts
> Priority: Minor
> Attachments: ImmutableProtocolComponentDescriptors2.patch
>
>
> The descriptors for structures, messages, types, etc. in package
> {{com.facebook.thrift.protocol}} which are used during (de-)serialization
> have mutable attributes. This forces the creation of these descriptors for
> each use even if the data is constant in many cases.
> By changing the descriptors to be immutable, structures and protocols can use
> singleton, constant instances during (de-)serialization. This will improve
> performance a bit by preventing the creation of hundreds (thousands?) of
> short-lived objects per second during heavy use of Thrift.
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