search

jcustenborder / kafka-connect-transform-xml

Transformation for converting XML data to Structured data.
Apache License 2.0
22 stars 44 forks source link

Java NullPointerException while using XML transform #39

Open hancehans opened 3 years ago

hancehans commented 3 years ago

Hi, we are trying to use Kafka connect xml transform to convert xml (https://www.confluent.io/hub/jcustenborder/kafka-connect-transform-xml), so that the xml message can be parsed as avro in confluent. We use Confluent 5.5.0, java jdk1.8.0_252 We try from a simple xml file, however we encountered an error with this error stack: [2021-02-05 15:05:24,715] ERROR Failed to start task XML_TEST_TRANSFORM-0 (org.apache.kafka.connect.runtime.Worker) org.apache.kafka.connect.errors.ConnectException: java.lang.NullPointerException at org.apache.kafka.connect.runtime.ConnectorConfig.transformations(ConnectorConfig.java:264) at org.apache.kafka.connect.runtime.Worker.buildWorkerTask(Worker.java:520) at org.apache.kafka.connect.runtime.Worker.startTask(Worker.java:472) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.startTask(DistributedHerder.java:1147) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.access$1600(DistributedHerder.java:126) at org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.call(DistributedHerder.java:1162) at org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.call(DistributedHerder.java:1158) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.NullPointerException at com.github.jcustenborder.kafka.connect.transform.xml.XSDCompiler.compileContext(XSDCompiler.java:146) at com.github.jcustenborder.kafka.connect.transform.xml.FromXml.configure(FromXml.java:130) at org.apache.kafka.connect.runtime.ConnectorConfig.transformations(ConnectorConfig.java:261) ... 10 more

No additional trace available in the log (root logger alrady set to TRACE), I wonder what causes the error, any idea regarding this error/ get more verbosity of the error appreciated Config xmlfile xsdschema

fayezosaadi commented 3 years ago

Hi, I also ran into the same exact issue, downgrading the java version solved the the problem for me.

jpnorenam commented 2 years ago

@fayezosaadi Hi, which version made it work?