[
https://issues.apache.org/jira/browse/KAFKA-6466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Randall Hauch resolved KAFKA-6466.
----------------------------------
Resolution: Duplicate
> Kafka connect task sometimes fails on start-up
> ----------------------------------------------
>
> Key: KAFKA-6466
> URL: https://issues.apache.org/jira/browse/KAFKA-6466
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 1.0.0
> Reporter: Alexander Koval
> Priority: Major
>
> We use kafka connect for indexing into Elasticsearch. Sometimes when we
> updating our kafka-connect application one or several tasks get {{FAILED}}
> status. Restarting connector with failed task usually helps.
>
> Below is an example of the failed task's stacktrace:
> {code:java}
> java.lang.IllegalArgumentException: A metric named 'MetricName
> [name=offset-commit-max-time-ms, group=connector-task-metrics,
> description=The maximum time in milliseconds taken by this task to commit
> offsets., tags={connector=prom-ua-catalog-product, task=2}]' already exists,
> can't register another one.
> at
> org.apache.kafka.common.metrics.Metrics.registerMetric(Metrics.java:532)
> at org.apache.kafka.common.metrics.Sensor.add(Sensor.java:256)
> at org.apache.kafka.common.metrics.Sensor.add(Sensor.java:241)
> at
> org.apache.kafka.connect.runtime.WorkerTask$TaskMetricsGroup.<init>(WorkerTask.java:328)
> at org.apache.kafka.connect.runtime.WorkerTask.<init>(WorkerTask.java:69)
> at
> org.apache.kafka.connect.runtime.WorkerSinkTask.<init>(WorkerSinkTask.java:98)
> at
> org.apache.kafka.connect.runtime.Worker.buildWorkerTask(Worker.java:449)
> at org.apache.kafka.connect.runtime.Worker.startTask(Worker.java:404)
> at
> org.apache.kafka.connect.runtime.distributed.DistributedHerder.startTask(DistributedHerder.java:852)
> at
> org.apache.kafka.connect.runtime.distributed.DistributedHerder.access$1600(DistributedHerder.java:108)
> at
> org.apache.kafka.connect.runtime.distributed.DistributedHerder$13.call(DistributedHerder.java:866)
> at
> org.apache.kafka.connect.runtime.distributed.DistributedHerder$13.call(DistributedHerder.java:862)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748){code}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
