Github user squito commented on the pull request:
https://github.com/apache/spark/pull/7004#issuecomment-115328079
One high-level question -- if a user does *not* call
`SparkConf.registerAvroSchema`, this will still write the schema with every
record, correct? The only potential advantage is that the schema gets
compressed?
My instinct is that its not worth it for you to do any extra compression
for the schema. There is already compression controlled by
`spark.shuffle.compress`, I don't think you'll gain anything beyond that. I
think removing the compression logic would simplify things a bit, and you'd
still get the benefits of not sending the schema with every record.
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