Hi Everyone, I m new to avro, running into issues if a type is combined with "null", like ["null","int"] or ["null", "string"].
I have a schema like below { "type":"record","namespace":"tutorialspoint", "name":"empdetails","fields":[ { "name":"experience", "type":["null","string"],"default":null }, { "name":"age", "type":"int" } ] } Below is the json dataset. {"experience" : "da", "age": 50} java -jar avro-tools-1.7.7.jar fromjson --schema-file test.avsc test.json > test.avro If I have "null" value in "experience" column it goes though, but if it has some string it is giving below error. Similar error with int types as well (VALUE_NUMBER_INT). Exception in thread "main" org.apache.avro.AvroTypeException: Expected start-union. Got VALUE_STRING at org.apache.avro.io.JsonDecoder.error(JsonDecoder.java:697) at org.apache.avro.io.JsonDecoder.readIndex(JsonDecoder.java:441) at org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:290) at org.apache.avro.io.parsing.Parser.advance(Parser.java:88) I have columns with strings or nulls in json, is there a work around to this error without changing the json data? Thanks in advance. Thanks, Sivakumar Bhavanari.