davidov541 commented on a change in pull request #933: HIVE-21218: Adding
support for Confluent Kafka Avro message format
URL: https://github.com/apache/hive/pull/933#discussion_r387878744
##########
File path: kafka-handler/src/java/org/apache/hadoop/hive/kafka/KafkaSerDe.java
##########
@@ -133,12 +134,40 @@
Preconditions.checkArgument(!schemaFromProperty.isEmpty(), "Avro Schema
is empty Can not go further");
Schema schema = AvroSerdeUtils.getSchemaFor(schemaFromProperty);
LOG.debug("Building Avro Reader with schema {}", schemaFromProperty);
- bytesConverter = new AvroBytesConverter(schema);
+ bytesConverter = getByteConverterForAvroDelegate(schema, tbl);
} else {
bytesConverter = new BytesWritableConverter();
}
}
+ enum BytesConverterType {
+ CONFLUENT,
+ SKIP,
+ NONE;
+
+ static BytesConverterType fromString(String value) {
+ try {
+ return BytesConverterType.valueOf(value.trim().toUpperCase());
+ } catch (Exception e){
+ return NONE;
+ }
+ }
+ }
+
+ BytesConverter getByteConverterForAvroDelegate(Schema schema, Properties
tbl) {
+ String avroBytesConverterProperty = tbl.getProperty(AvroSerdeUtils
+
.AvroTableProperties.AVRO_SERDE_TYPE
+ .getPropName(),
BytesConverterType.NONE.toString());
+ BytesConverterType avroByteConverterType =
BytesConverterType.fromString(avroBytesConverterProperty);
+ Integer avroSkipBytes =
Integer.getInteger(tbl.getProperty(AvroSerdeUtils.AvroTableProperties.AVRO_SERDE_SKIP_BYTES
Review comment:
I think I'm confused what you're asking for then. The initialize function
takes in a java.util.Properties object that has properties that have been set
for the serde in the DDL for the table. It reads a few from that object, and
then passes it to getByteConverterForAvroDelegate, where it is also used in the
code added here. The usage of the properties object here matches what is being
done in initialize, and seems to match what I would expect. These aren't
pulling system properties of the JVM, or at least are not necessarily doing so,
instead reading from the Properties object passed to us.
Does that make sense, or am I way off base?
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