SerDe is short for Serializer/Deserializer. A SerDe allows Hive to read in data from a table, and write it back out to HDFS in any custom format. Anyone can write their own SerDe for their own data formats.a
For JSON files, Amazon has provided a JSON SerDe available at:
s3://elasticmapreduce/samples/hive-ads/libs/jsonserde.jar
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