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From "Martin Kleppmann (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AVRO-1260) Ruby: Performance improvements for parsing
Date Wed, 20 Feb 2013 01:41:13 GMT

     [ https://issues.apache.org/jira/browse/AVRO-1260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Martin Kleppmann updated AVRO-1260:
-----------------------------------

    Attachment: AVRO-1260.patch

Patch attached.
                
> Ruby: Performance improvements for parsing
> ------------------------------------------
>
>                 Key: AVRO-1260
>                 URL: https://issues.apache.org/jira/browse/AVRO-1260
>             Project: Avro
>          Issue Type: Improvement
>          Components: ruby
>    Affects Versions: 1.7.3
>            Reporter: Martin Kleppmann
>         Attachments: AVRO-1260.patch
>
>
> I've made a few performance improvements to the Ruby Avro decoder. In my tests (decoding
a complex record with many fields and nested records), I saw a 40% speedup on MRI 1.8.7 and
a 20% speedup on MRI 1.9.3. The improved code also makes about half as many object allocations
as before.
> Main changes are:
> * Using symbols instead of strings for the various schema types (there was actually a
FIXME in the code for this, now fixed)
> * Added a few memoizations to avoid unnecessarily recomputing values
> I've tried to keep the API unchanged — {{Avro::Schema#type}} still returns a string,
as users may be relying on the type ({{Avro::Schema#type_sym}} has the symbolized version).
So I don't think this patch introduces any compatibility problems (as long as apps aren't
relying on internals of the Avro library).

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