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https://issues.apache.org/jira/browse/FLINK-7945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16234932#comment-16234932
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aitozi commented on FLINK-7945:
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Before I think the losed metric is caused by the kafka client is used wrong,
after serveral test i have found that kafka add per partition lag metric after
0.10.2.0 [https://issues.apache.org/jira/browse/KAFKA-4381]. But after read
the kafka code , the metrics is only add after the consumer#poll method
> kafka-connector11 use kafkaConsumer0.9 caused it lost the important metric in
> kafka consumer clients11
> ------------------------------------------------------------------------------------------------------
>
> Key: FLINK-7945
> URL: https://issues.apache.org/jira/browse/FLINK-7945
> Project: Flink
> Issue Type: Bug
> Components: Kafka Connector, Metrics
> Affects Versions: 1.4.0, 1.3.2
> Reporter: aitozi
> Assignee: aitozi
> Priority: Major
>
> when i want to add kafka-lag to per partition, i found that Kafka-connector11
> used the kafka09Fetcher and kafka09Fetcher use the 09 version kafka client,
> caused that the new metric like kafka per partition consumer lag lost.
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