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Date: Fri, 1 Dec 2017 07:16:00 +0000 (UTC)
From: "Sudhir Pradhan (JIRA)" <jira@apache.org>
To: jira@kafka.apache.org
Message-ID: <JIRA.13122107.1512112558000.363088.1512112560198@Atlassian.JIRA>
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Subject: [jira] [Created] (KAFKA-6290) Kafka Connect fails when using cast
 transformation
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archived-at: Fri, 01 Dec 2017 07:24:32 -0000

Sudhir Pradhan created KAFKA-6290:
-------------------------------------

             Summary: Kafka Connect fails when using cast transformation
                 Key: KAFKA-6290
                 URL: https://issues.apache.org/jira/browse/KAFKA-6290
             Project: Kafka
          Issue Type: Task
          Components: KafkaConnect
    Affects Versions: 0.11.0.0
            Reporter: Sudhir Pradhan


I am facing same issue when consuming from KAFKA to HDFS with CAST TRANSFORMS. Any pointer please.

My Connector :
*********************
```
{
 "name": "hdfs-sink-avro-cast-test-stndln",
 "config": {
  "key.converter": "io.confluent.connect.avro.AvroConverter",
  "key.converter.schema.registry.url": "http://localhost:8081",
  "value.converter": "io.confluent.connect.avro.AvroConverter",
  "value.converter.schema.registry.url": "http://localhost:8081",
  "key.converter.schemas.enable": "true",
  "value.converter.schemas.enable": "true",
  "internal.key.converter": "org.apache.kafka.connect.json.JsonConverter",
  "internal.value.converter": "org.apache.kafka.connect.json.JsonConverter",
  "internal.key.converter.schemas.enable": "false",
  "internal.value.converter.schemas.enable": "false",
  "offset.storage.file.filename": "/tmp/connect.offsets.avroHdfsConsumer.casttest.stndln",
  "offset.flush.interval.ms": "500",
  "parse.key": "true",
  "connector.class": "io.confluent.connect.hdfs.HdfsSinkConnector",
  "hadoop.home": "/usr/lib/hadoop",
  "hdfs.url": "hdfs://ip-127-34-56-789.us-east-1.compute.interna:8020",
  "topics": "avro_raw_KFK_SRP_USER_TEST_V,avro_raw_KFK_SRP_PG_HITS_TEST_V",
  "tasks.max": "1",
  "topics.dir": "/home/hadoop/kafka/data/streams/in/raw/casttest1",
  "logs.dir": "/home/hadoop/kafka/wal/streams/in/raw/casttest1",
  "hive.integration": "true",
  "hive.metastore.uris": "thrift://ip-127-34-56-789.us-east-1.compute.internal:9083",
  "schema.compatibility": "BACKWARD",
  "flush.size": "10000",
  "rotate.interval.ms": "1000",
  "mode": "timestamp",
  "transforms": "Cast",
  "transforms.Cast.type": "org.apache.kafka.connect.transforms.Cast$Value",
  "transforms.Cast.spec": "residuals:float64,comp:float64"
 }
}
```

Exception :
*************
```
[2017-11-16 01:14:39,719] ERROR Task hdfs-sink-avro-cast-test-stndln-0 threw an uncaught and unrecoverable exception (org.apache.kafka.connect.runtime.WorkerTask:148)
org.apache.kafka.connect.errors.DataException: Invalid Java object for schema type INT64: class java.util.Date for field: "null"
        at org.apache.kafka.connect.data.ConnectSchema.validateValue(ConnectSchema.java:239)
        at org.apache.kafka.connect.data.ConnectSchema.validateValue(ConnectSchema.java:209)
        at org.apache.kafka.connect.data.Struct.put(Struct.java:214)
        at org.apache.kafka.connect.transforms.Cast.applyWithSchema(Cast.java:152)
        at org.apache.kafka.connect.transforms.Cast.apply(Cast.java:108)
        at org.apache.kafka.connect.runtime.TransformationChain.apply(TransformationChain.java:38)
        at org.apache.kafka.connect.runtime.WorkerSinkTask.convertMessages(WorkerSinkTask.java:414)
        at org.apache.kafka.connect.runtime.WorkerSinkTask.poll(WorkerSinkTask.java:250)
        at org.apache.kafka.connect.runtime.WorkerSinkTask.iteration(WorkerSinkTask.java:180)
        at org.apache.kafka.connect.runtime.WorkerSinkTask.execute(WorkerSinkTask.java:148)
        at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:146)
        at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:190)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
[2017-11-16 01:14:39,719] ERROR Task is being killed and will not recover until manually restarted (org.apache.kafka.connect.runtime.WorkerTask:149)
[2017-11-16 01:14:39,719] INFO Shutting down Hive executor service. (io.confluent.connect.hdfs.DataWriter:309)
```


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