Question

我正在使用Kafka connect将来自Kafka经纪人的数据保存到使用Confluent Platform进行弹性搜索。

我编写了一个SinkConnector来将数据保存到弹性搜索中。

Connect-avro-standalone.properties配置为：

     key.converter=org.apache.kafka.connect.json.JsonConverter
     value.converter=org.apache.kafka.connect.json.JsonConverter

但是，当我将有效的json从avro制作人推送到Kafka时，会导致以下异常。

  2016-10-05 15:02:25,225] ERROR Task kafka-elasticsearch-sink1-0 threw an uncaught and unrecoverable exception (org.apache.kafka.connect.runtime.WorkerTask)
org.apache.kafka.connect.errors.DataException: Converting byte[] to Kafka Connect data failed due to serialization error:
        at org.apache.kafka.connect.json.JsonConverter.toConnectData(JsonConverter.java:328)
        at org.apache.kafka.connect.runtime.WorkerSinkTask.convertMessages(WorkerSinkTask.java:356)
        at org.apache.kafka.connect.runtime.WorkerSinkTask.poll(WorkerSinkTask.java:226)
        at org.apache.kafka.connect.runtime.WorkerSinkTask.iteration(WorkerSinkTask.java:170)
        at org.apache.kafka.connect.runtime.WorkerSinkTask.execute(WorkerSinkTask.java:142)
        at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:140)
        at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:175)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.kafka.common.errors.SerializationException: java.lang.ArrayIndexOutOfBoundsException: 6
Caused by: java.lang.ArrayIndexOutOfBoundsException: 6
        at com.fasterxml.jackson.core.io.UTF32Reader.read(UTF32Reader.java:138)
        at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.loadMore(ReaderBasedJsonParser.java:153)
        at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._skipWSOrEnd(ReaderBasedJsonParser.java:1854)
        at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:571)

Answer 1

我在类路径2.5.4和2.6.3中有两个不同版本的jackson-databind jar。从类路径中删除了jar的2.5.4版本，它解决了这个问题。

DataException：由于序列化错误，将byte []转换为Kafka Connect数据失败

1 个答案: