how to read a parquet file, in a standalone java code?
java, parquet
Solution
Old method: (deprecated)
AvroParquetReader<GenericRecord> reader = new AvroParquetReader<GenericRecord>(file);
GenericRecord nextRecord = reader.read();
New method:
ParquetReader<GenericRecord> reader = AvroParquetReader.<GenericRecord>builder(file).build();
GenericRecord nextRecord = reader.read();
I got this from here and have used this in my test cases successfully.
Problem
the parquet docs from cloudera shows examples of integration with pig/hive/impala. but in many cases I want to read the parquet file itself for debugging purposes. is there a straightforward java reader api to read a parquet file ? Thanks Yang