Something like this works and is how I create an RDD of specific records.
val avroRdd = sc.newAPIHadoopFile("twitter.avro",
classOf[AvroKeyInputFormat[twitter_schema]], classOf[AvroKey[twitter_schema]],
classOf[NullWritable], conf) (From
https://github.com/julianpeeters/avro-scala-macro-annotation-examples/blob/master/spark/src/main/scala/AvroSparkScala.scala)
Keep in mind you'll need to use the kryo serializer as well.
From: Frank Austin Nothaft <[email protected]<mailto:[email protected]>>
Date: Wednesday, November 5, 2014 at 5:06 PM
To: Simone Franzini <[email protected]<mailto:[email protected]>>
Cc: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Subject: Re: AVRO specific records
Hi Simone,
Matt Massie put together a good tutorial on his
blog<http://zenfractal.com/2013/08/21/a-powerful-big-data-trio/>. If you’re
looking for more code using Avro, we use it pretty extensively in our genomics
project. Our Avro schemas are
here<https://github.com/bigdatagenomics/bdg-formats/blob/master/src/main/resources/avro/bdg.avdl>,
and we have serialization code
here<https://github.com/bigdatagenomics/adam/tree/master/adam-core/src/main/scala/org/bdgenomics/adam/serialization>.
We use Parquet for storing the Avro records, but there is also an Avro
HadoopInputFormat.
Regards,
Frank Austin Nothaft
[email protected]<mailto:[email protected]>
[email protected]<mailto:[email protected]>
202-340-0466
On Nov 5, 2014, at 1:25 PM, Simone Franzini
<[email protected]<mailto:[email protected]>> wrote:
How can I read/write AVRO specific records?
I found several snippets using generic records, but nothing with specific
records so far.
Thanks,
Simone Franzini, PhD
http://www.linkedin.com/in/simonefranzini
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