Can Hive deserialize avro bytes to the schema provided? - hadoop

Question

I have avro file to be loaded into Hive but my file is in binary.
What deserializer should be used to get the binary avro to hive?
I don't want binary data in hive but the decoded binary data.
This is how I create my table.
CREATE TABLE kst7
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'='pathtoavsc.avsc');
When I use the above command table gets created, data gets loaded but when I do a select * from table I get below error:
Failed with exception java.io.IOException:org.apache.avro.AvroTypeException: Found bytes, expecting union
avsc file:
{
"namespace": "com.nimesh.tripod.avro.enrichment",
"type": "record",
"name": "EnrichmentData",
"fields": [
{"name": "rowKey", "type": ["null", {"type":"string","avro.java.string":"String"}], "default": null},
{"name": "ownerGuid", "type": ["null", {"type":"string","avro.java.string":"String"}], "default": null},
{"name": "autotagsEnrichment", "type": ["bytes", "null", {
"namespace": "com.nimesh.tripod.avro.enrichment",
"type": "record",
"name": "AutotagEnrichment",
"fields": [
{"name": "version", "type": ["null", {"type":"string","avro.java.string":"String"}], "default": null},
{"name": "autotags", "type": ["null", {"type": "array", "items": {
"namespace": "com.nimesh.tripod.avro.enrichment",
"type": "record",
"name": "Autotag",
"fields": [
{"name": "tag", "type": ["null", {"type":"string","avro.java.string":"String"}], "default": null},
{"name": "score", "type": ["null", "double"], "default": null}
]
}}], "default": null}
]
}], "default": null},
{"name": "colorEnrichment", "type": ["bytes","null", {
"namespace": "com.nimesh.tripod.avro.enrichment",
"type": "record",
"name": "ColorEnrichment",
"fields": [
{"name": "version", "type": ["null", {"type":"string","avro.java.string":"String"}], "default": null},
{"name": "color", "type": ["null", {"type": "array", "items": {
"namespace": "com.nimesh.tripod.avro.enrichment",
"type": "record",
"name": "Color",
"fields": [
{"name": "color", "type": ["null", {"type":"string","avro.java.string":"String"}], "default": null},
{"name": "score", "type": ["null", "double"], "default": null}
]
}}], "default": null}
]
}], "default": null}
]
}

Answer 1

I think you are looking for SERDEPROPERTIES rather than TBLPROPERTIES
ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.avro.AvroSerDe'
WITH SERDEPROPERTIES ('avro.schema.url'='pathtoschema.avsc')
Otherwise, try selecting individual fields until you find the one that's causing the error, then inspect what type(s) the AVSC are being mapped into the Hive table as.