Stan Rosenberg created AVRO-2138:
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Summary: org.apache.avro.mapreduce.AvroMultipleOutputs.write
copies Configuration on every invocation
Key: AVRO-2138
URL: https://issues.apache.org/jira/browse/AVRO-2138
Project: Avro
Issue Type: Bug
Affects Versions: 1.8.2
Reporter: Stan Rosenberg
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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