Parquet Avro File hadling with HIVE

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How to deal with Parquet & Avro File Format in HIVE?
Do we need to add or download dependencies for the same, if Yes what are the steps?
Jul 25, 2019 in Big Data Hadoop by Richit
1,134 views

1 answer to this question.

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For avro you can follow the format as shown below.

CREATE TABLE table_name

PARTITIONED BY (t string, y string, m string, d string, h string, hh string)

ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.avro.AvroSerDe'

STORED AS INPUTFORMAT 'org.apache.hadoop.hive.ql.io.avro.AvroContainerInputFormat'

OUTPUTFORMAT 'org.apache.hadoop.hive.ql.io.avro.AvroContainerOutputFormat'

TBLPROPERTIES (

'avro.schema.url'='hdfs://location/schema/schema.avsc')

location "hdfs:///location/data;

and load the data like


/location/data/y=2016/m=02/d=03/h=03/hh=12/data.avro 

/location/data/y=2016/m=02/d=03/h=03/hh=13/data2.avro

in that way you will be able to load the data with the following statement. All the jars should be already present in hive if not then avro-json-1.0-SNAPSHOT.jar needs to be added.

And the solution for parquet is to create dynamically a table from avro, and then create a new table of parquet format from the avro one.

there is the source code from Hive, which should help you.

CREATE TABLE avro_test ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.avro.AvroSerDe' STORED AS AVRO TBLPROPERTIES ('avro.schema.url'='myHost/myAvroSchema.avsc');


CREATE EXTERNAL TABLE parquet_test LIKE avro_test STORED AS PARQUET LOCATION 'hdfs://myParquetFilesPath';
answered Jul 25, 2019 by Tarun

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