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https://issues.apache.org/jira/browse/AVRO-1760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15093034#comment-15093034
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Ryan Blue commented on AVRO-1760:
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I'm a little uncomfortable shading all of guava, but this came up on AVRO-1781
as well. For that issue, I tried to minimize the parts of guava we pull in (and
fixed licensing as well). I think that will probably be what we end up with and
I'll update the patch to depend on that once it is in.
> Thread scalability problem with the use of SynchronizedMap
> ----------------------------------------------------------
>
> Key: AVRO-1760
> URL: https://issues.apache.org/jira/browse/AVRO-1760
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.8.0, 1.8.1, 1.9.0
> Reporter: Mulugeta Mammo
> Priority: Critical
> Labels: patch, performance
> Fix For: 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.7.8, 1.8.0, 1.8.1, 1.9.0
>
> Attachments: AVRO-1760.patch, AVRO-1760.patch
>
>
> While running Adam Genomics (which uses Avro) on Apache Spark, we discovered
> that threads (tasks in Spark Context) block in Avro while executing the
> getDefaultValue(Field field) method in
> https://github.com/apache/avro/blob/trunk/lang/java/avro/src/main/java/org/apache/avro/generic/GenericData.java
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