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https://issues.apache.org/jira/browse/FLINK-4905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15751146#comment-15751146
]
Stephan Ewen commented on FLINK-4905:
-------------------------------------
I saw the issue happening again:
https://api.travis-ci.org/jobs/183927280/log.txt?deansi=true
[~Andrew Efimov] are you still working on a patch for this?
> Kafka test instability IllegalStateException: Client is not started
> -------------------------------------------------------------------
>
> Key: FLINK-4905
> URL: https://issues.apache.org/jira/browse/FLINK-4905
> Project: Flink
> Issue Type: Bug
> Components: Kafka Connector
> Reporter: Robert Metzger
> Assignee: Andrew Efimov
> Labels: test-stability
> Attachments: Kafka08Fetcher.png
>
>
> The following travis build
> (https://s3.amazonaws.com/archive.travis-ci.org/jobs/170365439/log.txt)
> failed because of this error
> {code}
> 08:17:11,239 INFO org.apache.flink.runtime.jobmanager.JobManager
> - Status of job 33ebdc0e7c91be186d80658ce3d17069 (Read some records to
> commit offsets to Kafka) changed to FAILING.
> java.lang.RuntimeException: Error while confirming checkpoint
> at org.apache.flink.runtime.taskmanager.Task$4.run(Task.java:1040)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.IllegalStateException: Client is not started
> at
> org.apache.flink.shaded.com.google.common.base.Preconditions.checkState(Preconditions.java:173)
> at
> org.apache.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:113)
> at
> org.apache.curator.utils.EnsurePath$InitialHelper$1.call(EnsurePath.java:148)
> at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:107)
> at
> org.apache.curator.utils.EnsurePath$InitialHelper.ensure(EnsurePath.java:141)
> at org.apache.curator.utils.EnsurePath.ensure(EnsurePath.java:99)
> at
> org.apache.flink.streaming.connectors.kafka.internals.ZookeeperOffsetHandler.setOffsetInZooKeeper(ZookeeperOffsetHandler.java:133)
> at
> org.apache.flink.streaming.connectors.kafka.internals.ZookeeperOffsetHandler.prepareAndCommitOffsets(ZookeeperOffsetHandler.java:93)
> at
> org.apache.flink.streaming.connectors.kafka.internals.Kafka08Fetcher.commitInternalOffsetsToKafka(Kafka08Fetcher.java:341)
> at
> org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.notifyCheckpointComplete(FlinkKafkaConsumerBase.java:421)
> at
> org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyOfCompletedCheckpoint(AbstractUdfStreamOperator.java:229)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.notifyCheckpointComplete(StreamTask.java:571)
> at org.apache.flink.runtime.taskmanager.Task$4.run(Task.java:1035)
> ... 5 more
> 08:17:11,241 INFO org.apache.flink.runtime.taskmanager.Task
> - Attempting to cancel task Source: Custom Source -> Map -> Map -> Sink:
> Unnamed (1/3)
> {code}
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