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https://issues.apache.org/jira/browse/AVRO-2138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thiruvalluvan M. G. updated AVRO-2138:
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Component/s: java
> org.apache.avro.mapreduce.AvroMultipleOutputs.write copies Configuration on
> every invocation of write
> -----------------------------------------------------------------------------------------------------
>
> Key: AVRO-2138
> URL: https://issues.apache.org/jira/browse/AVRO-2138
> Project: Apache Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.8.2
> Reporter: Stan Rosenberg
> Priority: Major
>
> While profiling a spark job using AvroMultipleOutputs, I noticed that a great
> deal of time is wasted by copying (hadoop) Configuration. Indeed this
> happens on _every_ invocation of {{write}}:
> [https://github.com/apache/avro/blob/master/lang/java/mapred/src/main/java/org/apache/avro/mapreduce/AvroMultipleOutputs.java#L437]
> After patching, I am seeing a speed-up of 2x and above in running time of the
> same job.
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