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https://issues.apache.org/jira/browse/THRIFT-3431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roger Meier resolved THRIFT-3431.
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Resolution: Fixed
committed
> Avoid "schemes" HashMap lookups during struct reads/writes
> ----------------------------------------------------------
>
> Key: THRIFT-3431
> URL: https://issues.apache.org/jira/browse/THRIFT-3431
> Project: Thrift
> Issue Type: Improvement
> Components: Java - Compiler
> Affects Versions: 0.9.3
> Reporter: Tom Lee
> Priority: Minor
>
> Generated Java code for structs doesn't need to do a HashMap lookup on every
> read/write operation.
> Was surprised to see this show up in profilers under certain high throughput,
> write-heavy loads. Unclear if the cost was in the hashCode() implementation
> of the key or in the map lookup itself, but given this map never changes, for
> now it seems like it can be pretty safely replaced with a simple (and, in
> most cases, predictable) branch.
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