Fixes #3589: Add support for Parquet files similar to CSV/Arrow #3711
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conker84
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Fixes #3589
This PR adds the support for Apache Parquet export/import/load
Added 4 export procedures that streams a list of byte[] one per each batch:
apoc.export.parquet.all.stream,apoc.export.parquet.graph.stream,apoc.export.parquet.query.stream,apoc.export.parquet.data.streamAdded 4 export procedures which create a Parquet file and return a
ProgressInforesult, like the CSV ones:apoc.export.parquet.all,apoc.export.parquet.graph,apoc.export.parquet.query,apoc.export.parquet.dataAdded one load procedure
apoc.load.parquetthat reads a Parquet byte[] or a Parquet file and returns a map for each rowAdded one import procedure
apoc.import.parquetthat import data from a Parquet byte[] or a Parquet fileIn order to load/import complex data not recognized by parquet, like Duration, Point, List of Duration, etc... , which will be stringified during export,
we can use the
mapping: {keyToConvert: valueTypeName}config to convert them.For example
apoc.import.parquet(fileName, {mapping: {foo: "DurationArray"}})in order to convert a keyfooto a List of DurationCreated a follow-up card to create doc files and any other additions