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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/10/26 15:45:00 UTC
[jira] [Commented] (FLINK-10107) SQL Client end-to-end test fails
for releases
[ https://issues.apache.org/jira/browse/FLINK-10107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665316#comment-16665316 ]
ASF GitHub Bot commented on FLINK-10107:
----------------------------------------
pnowojski commented on issue #6534: [FLINK-10107] [sql-client] Relocate Flink Kafka connectors for SQL JARs
URL: https://github.com/apache/flink/pull/6534#issuecomment-433452599
@twalthr what is the problem here? Do I understand this correctly, that different versions of `flink-kafka-connector`s conflicting with one another if they are used/loaded at the same time? And that's potential production issue (however a rare use case), but it's causing problems in our end-to-end tests?
If so why would this help:
> A perfect solution would be:
>
> Move version-specific Kafka code into version-specific packages (e.g. o.a.f.kafka10)
> Move version-agnostic Kafka code into a common package (e.g. o.a.f.kafka)
?
Isn't the correct "perfect" solution to load each connector/plugin in a separate independent class loader, isolated from others?
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> SQL Client end-to-end test fails for releases
> ---------------------------------------------
>
> Key: FLINK-10107
> URL: https://issues.apache.org/jira/browse/FLINK-10107
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Major
> Labels: pull-request-available
>
> It seems that SQL JARs for Kafka 0.10 and Kafka 0.9 have conflicts that only occur for releases and not SNAPSHOT builds. This might be due to their file name. Depending on the file name either 0.9 is loaded before 0.10 and vice versa.
> One of the following errors occured:
> {code}
> 2018-08-08 18:28:51,636 ERROR org.apache.flink.kafka09.shaded.org.apache.kafka.clients.ClientUtils - Failed to close coordinator
> java.lang.NoClassDefFoundError: org/apache/flink/kafka09/shaded/org/apache/kafka/common/requests/OffsetCommitResponse
> at org.apache.flink.kafka09.shaded.org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.sendOffsetCommitRequest(ConsumerCoordinator.java:473)
> at org.apache.flink.kafka09.shaded.org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.commitOffsetsSync(ConsumerCoordinator.java:357)
> at org.apache.flink.kafka09.shaded.org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.maybeAutoCommitOffsetsSync(ConsumerCoordinator.java:439)
> at org.apache.flink.kafka09.shaded.org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.close(ConsumerCoordinator.java:319)
> at org.apache.flink.kafka09.shaded.org.apache.kafka.clients.ClientUtils.closeQuietly(ClientUtils.java:63)
> at org.apache.flink.kafka09.shaded.org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:1277)
> at org.apache.flink.kafka09.shaded.org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:1258)
> at org.apache.flink.streaming.connectors.kafka.internal.KafkaConsumerThread.run(KafkaConsumerThread.java:286)
> Caused by: java.lang.ClassNotFoundException: org.apache.flink.kafka09.shaded.org.apache.kafka.common.requests.OffsetCommitResponse
> at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders$ChildFirstClassLoader.loadClass(FlinkUserCodeClassLoaders.java:120)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> ... 8 more
> {code}
> {code}
> java.lang.NoSuchFieldError: producer
> at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer010.invoke(FlinkKafkaProducer010.java:369)
> at org.apache.flink.streaming.api.operators.StreamSink.processElement(StreamSink.java:56)
> at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:579)
> at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:554)
> at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:534)
> at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:689)
> at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:667)
> at org.apache.flink.streaming.api.operators.StreamMap.processElement(StreamMap.java:41)
> at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:579)
> at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:554)
> at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:534)
> at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:689)
> at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:667)
> at org.apache.flink.streaming.api.operators.TimestampedCollector.collect(TimestampedCollector.java:51)
> at org.apache.flink.table.runtime.CRowWrappingCollector.collect(CRowWrappingCollector.scala:37)
> at org.apache.flink.table.runtime.CRowWrappingCollector.collect(CRowWrappingCollector.scala:28)
> {code}
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