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https://issues.apache.org/jira/browse/AVRO-557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897052#action_12897052
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Doug Cutting commented on AVRO-557:
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> I'm afraid using ThreadLocals without any exposed lifecycle control only
> introduces longer-than-necessary garbage retention
The ThreadLocal here contains only weak references, so no garbage should be
retained longer than necessary. A 10x performance improvement is not something
we should ignore lightly.
> Speed up one-time data decoding
> -------------------------------
>
> Key: AVRO-557
> URL: https://issues.apache.org/jira/browse/AVRO-557
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.3.2
> Reporter: Kevin Oliver
> Assignee: Doug Cutting
> Fix For: 1.4.0
>
> Attachments: AVRO-557-partial.patch, AVRO-557.patch, AVRO-557.patch,
> AVRO-557.patch, AVRO-557.patch, AVRO-557.patch
>
>
> There are big gains to be had in performance when using a BinaryDecoder and a
> GenericDatumReader just one time. This is due to the relatively expensive
> parsing and initialization that came with 1.3. Patch with example code and a
> Perf harness to follow.
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