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https://issues.apache.org/jira/browse/AVRO-2051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16678511#comment-16678511
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ASF subversion and git services commented on AVRO-2051:
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Commit a318a34d1f5f8146fb441c092c73b6170719e88a in avro's branch
refs/heads/master from [~dkulp]
[ https://gitbox.apache.org/repos/asf?p=avro.git;h=a318a34 ]
[AVRO-2051] Remove synchronization for JsonProperties.getJsonProp
Fixes #245
> Thread contention accessing JsonProperties props
> ------------------------------------------------
>
> Key: AVRO-2051
> URL: https://issues.apache.org/jira/browse/AVRO-2051
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.8.2
> Reporter: Daniel Kulp
> Priority: Major
>
> See
> https://lists.apache.org/thread.html/dd34ab8439137a81a9de29ad4161f37b17638394cea0806765689976@%3Cuser.avro.apache.org%3E
> Basically, the getJsonProp method, being synchronized, is causing thread
> contention issues when trying to share schemas between threads. My
> proposal (pull request forthcoming) is to treat "props" as an immutable map
> and do a copy+add+swap for the addProp method. This will make the addProp
> call slower (particularly for large maps of props), but would make the reads
> significantly faster as no locking will be needed.
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