BQ load job failing when trying to create table from AVRO file - google-bigquery

Question

I am trying to create a BQ Table from AVRO file. I am getting this error when i run the BQ load job:
"Error while reading data, error message: The Apache Avro library
failed to parse the header with the following error: Unexpected type
for default value. Expected long, but found null: null"
The Schema of the AVRO file is:
{
"type" : "record",
"name" : "Pair",
"namespace" : "org.apache.avro.mapred",
"fields" : [ {
"name" : "key",
"type" : "int",
"doc" : ""
}, {
"name" : "value",
"type" : {
"type" : "record",
"name" : "CustomerInventoryOrderItems",
"namespace" : "com.test.customer.order",
"fields" : [ {
"name" : "updated_at",
"type" : "long"
}, {
"name" : "inventory_order_items",
"type" : {
"type" : "map",
"values" : {
"type" : "array",
"items" : {
"type" : "record",
"name" : "CustomerInventoryOrderItem",
"fields" : [ {
"name" : "order_item_id",
"type" : "int",
"default" : null
}, {
"name" : "updated_at",
"type" : "long"
}, {
"name" : "created_at",
"type" : "long"
}, {
"name" : "product_id",
"type" : [ "null", "int" ],
"default" : null
}, {
"name" : "type_id",
"type" : "int",
"default" : null
}, {
"name" : "event_id",
"type" : [ "null", "int" ],
"default" : null
}, {
"name" : "price",
"type" : [ "null", "double" ],
"default" : null
}, {
"name" : "tags",
"type" : [ "null", "string" ],
"default" : null
}, {
"name" : "estimated_ship_date",
"type" : [ "null", "long" ],
"default" : null
} ]
}
}
}
} ]
},
"doc" : "",
"order" : "ignore"
} ]
}
I am not sure what is wrong with the schema or anything else, because of which I am unable to load the data.

Answer 1

The problem is most likely the fields that have type int but you have null as the default value. For example:
"name" : "type_id",
"type" : "int",
"default" : null
The default should either be changed to be an integer or the type should be changed to be a union that includes null (like many of the other fields).