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https://issues.apache.org/jira/browse/HIVE-21218?focusedWorklogId=196116&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-196116
]
ASF GitHub Bot logged work on HIVE-21218:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Feb/19 08:15
Start Date: 08/Feb/19 08:15
Worklog Time Spent: 10m
Work Description: xbaran commented on pull request #526: HIVE-21218:
KafkaSerDe doesn't support topics created via Confluent
URL: https://github.com/apache/hive/pull/526#discussion_r254983960
##########
File path:
kafka-handler/src/test/org/apache/hadoop/hive/kafka/AvroBytesConverterTest.java
##########
@@ -0,0 +1,70 @@
+package org.apache.hadoop.hive.kafka;
+
+import com.google.common.collect.Maps;
+import io.confluent.kafka.schemaregistry.client.MockSchemaRegistryClient;
+import io.confluent.kafka.serializers.KafkaAvroSerializer;
+import org.apache.avro.Schema;
+import org.apache.hadoop.hive.serde2.avro.AvroGenericRecordWritable;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.util.Map;
+
+/**
+ * Created by Milan Baran on 1/29/19 15:03.
+ */
+public class AvroBytesConverterTest {
+
+ private static SimpleRecord simpleRecord1 =
SimpleRecord.newBuilder().setId("123").setName("test").build();
+ private static byte[] simpleRecord1AsBytes;
+
+ /**
+ * Emulate confluent avro producer that add 4 magic bits (int) before
value bytes. The int represents the schema ID from schema registry.
+ */
+ @BeforeClass
+ public static void setUp() {
+ Map<String,String> config = Maps.newHashMap();
+ config.put("schema.registry.url","http://localhost";);
+ KafkaAvroSerializer avroSerializer = new KafkaAvroSerializer(new
MockSchemaRegistryClient());
+ avroSerializer.configure(config, false);
Review comment:
Yea, good idea. Right now as @b-slim said keys are treated as bytes. But it
this case we need to add a lot of configuration into actual kafka table
properties.
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Issue Time Tracking
-------------------
Worklog Id: (was: 196116)
Time Spent: 40m (was: 0.5h)
> KafkaSerDe doesn't support topics created via Confluent Avro serializer
> -----------------------------------------------------------------------
>
> Key: HIVE-21218
> URL: https://issues.apache.org/jira/browse/HIVE-21218
> Project: Hive
> Issue Type: Bug
> Components: kafka integration, Serializers/Deserializers
> Affects Versions: 3.1.1
> Reporter: Milan Baran
> Assignee: Milan Baran
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> According to [Google
> groups|https://groups.google.com/forum/#!topic/confluent-platform/JYhlXN0u9_A]
> the Confluent avro serialzier uses propertiary format for kafka value -
> <magic_byte 0x00><4 bytes of schema ID><regular avro bytes for object that
> conforms to schema>.
> This format does not cause any problem for Confluent kafka deserializer which
> respect the format however for hive kafka handler its bit a problem to
> correctly deserialize kafka value, because Hive uses custom deserializer from
> bytes to objects and ignores kafka consumer ser/deser classes provided via
> table property.
> It would be nice to support Confluent format with magic byte.
> Also it would be great to support Schema registry as well.
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