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https://issues.apache.org/jira/browse/AVRO-1282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13641814#comment-13641814
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Leo Romanoff commented on AVRO-1282:
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> Perf.java is also not working for at least two reasons (commented out one
> portion, missing code in another). I reverted to the
> one from the v6 patch.
If possible, please include the latest versions of Perf.java reflection tests
from my patches. They are nicer and include an additional test case called
ReflectFloatTest, which is the closest to FloatTest, but is based on reflection.
> Make use of the sun.misc.Unsafe class during serialization if a JDK supports
> it
> -------------------------------------------------------------------------------
>
> Key: AVRO-1282
> URL: https://issues.apache.org/jira/browse/AVRO-1282
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.7.4
> Reporter: Leo Romanoff
> Priority: Minor
> Attachments: AVRO-1282-s1.patch, avro-1282-v1.patch,
> avro-1282-v2.patch, avro-1282-v3.patch, avro-1282-v4.patch,
> avro-1282-v5.patch, avro-1282-v6.patch, avro-1282-v7.patch,
> avro-1282-v8.patch, TestUnsafeUtil.java
>
>
> Unsafe can be used to significantly speed up serialization process, if a JDK
> implementation supports java.misc.Unsafe properly. Most JDKs running on PCs
> support it. Some platforms like Android lack a proper support for Unsafe yet.
> There are two possibilities to use Unsafe for serialization:
> 1) Very quick access to the fields of objects. It is way faster than with the
> reflection-based approach using Field.get/set
> 2) Input and Output streams can be using Unsafe to perform very quick
> input/output.
>
> 3) More over, Unsafe makes it possible to serialize to/deserialize from
> off-heap memory directly and very quickly, without any intermediate buffers
> allocated on heap. There is virtually no overhead compared to the usual byte
> arrays.
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