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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3295) Flink Kafka consumer fails with NoNodeException if zkConnect string contains chroot-path
Date Thu, 07 Jul 2016 13:52:11 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15366132#comment-15366132
] 

ASF GitHub Bot commented on FLINK-3295:
---------------------------------------

Github user rmetzger commented on the issue:

    https://github.com/apache/flink/pull/1555
  
    Closing this PR. It's outdated by now.


> Flink Kafka consumer fails with NoNodeException if zkConnect string contains chroot-path
> ----------------------------------------------------------------------------------------
>
>                 Key: FLINK-3295
>                 URL: https://issues.apache.org/jira/browse/FLINK-3295
>             Project: Flink
>          Issue Type: Bug
>          Components: Kafka Connector
>            Reporter: Robert Metzger
>            Assignee: Robert Metzger
>
> Zookeeper allows since V 3.2 to pass a base path (similar to chroot) with the connection
string. Flink's {{ZookeeperOffsetHandler}} doesn't show a very helpful error message when
the base path hasn't been created by the user.
> This is the exception:
> {code}
> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /consumers
>     at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
>     at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
>     at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
>     at org.apache.curator.utils.ZKPaths.mkdirs(ZKPaths.java:232)
>     at org.apache.curator.utils.EnsurePath$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.getOffsetFromZooKeeper(ZookeeperOffsetHandler.java:125)
>     at org.apache.flink.streaming.connectors.kafka.internals.ZookeeperOffsetHandler.seekFetcherToInitialOffsets(ZookeeperOffsetHandler.java:93)
>     at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer08.open(FlinkKafkaConsumer08.java:283)
>     at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36)
>     at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:89)
>     at org.apache.flink.streaming.runtime.tasks.StreamTask.openAllOperators(StreamTask.java:305)
>     at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:227)
>     at org.apache.flink.runtime.taskmanager.Task.run(Task.java:568)
>     at java.lang.Thread.run(Thread.java:745)
> {code}
> But the user passed a connection string like: {{host:port/foo/bar}}.
> See also: http://zookeeper.apache.org/doc/trunk/zookeeperProgrammers.html (section on
"ZooKeeper Sessions").



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