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Posted to issues@beam.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/01/23 13:25:00 UTC
[jira] [Work logged] (BEAM-6285) add parameters for offsetConsumer
in KafkaIO.read()
[ https://issues.apache.org/jira/browse/BEAM-6285?focusedWorklogId=188933&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-188933 ]
ASF GitHub Bot logged work on BEAM-6285:
----------------------------------------
Author: ASF GitHub Bot
Created on: 23/Jan/19 13:24
Start Date: 23/Jan/19 13:24
Worklog Time Spent: 10m
Work Description: XuMingmin commented on pull request #7598: [BEAM-6285] add parameters for offsetConsumer in KafkaIO.read()
URL: https://github.com/apache/beam/pull/7598
Set additional parameters for `KafkaUnboundedReader.offsetConsumer`, added by BEAM-6285.
In `KafkaIO.read()`, there're two consumers running in the backend actually:
1. `KafkaUnboundedReader.consumer`, which is the main consumer to read data from kafka topic(s);
2. `KafkaUnboundedReader.offsetConsumer`, which is used to estimate backlog, by fetching the latest offset;
By default, `KafkaUnboundedReader.offsetConsumer` shares the same parameters with `KafkaUnboundedReader.consumer`, with a generated `ConsumerConfig.GROUP_ID_CONFIG`(value is `%topicname_offset_consumer_%randonNumber_%groupId`). This may not work when the topic is secured in Kafka.
In this case with secured topics, you can add specific parameters for `KafkaUnboundedReader.offsetConsumer`, to overwrite parameters for `KafkaUnboundedReader.consumer`.
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 188933)
Time Spent: 10m
Remaining Estimate: 0h
> add parameters for offsetConsumer in KafkaIO.read()
> ---------------------------------------------------
>
> Key: BEAM-6285
> URL: https://issues.apache.org/jira/browse/BEAM-6285
> Project: Beam
> Issue Type: Improvement
> Components: io-java-kafka
> Reporter: Xu Mingmin
> Assignee: Xu Mingmin
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Add an option in KafkaIO.read() to avoid using `offsetConsumer`.
> *What's the problem:*
> When security is enabled, function `KafkaUnboundedReader.updateLatestOffsets()` always fails with lots of WARN log.
> *What's the cause:*
> `offsetConsumer` uses a mocked `ConsumerConfig.GROUP_ID_CONFIG`, and it doesn't work as expected when security is enabled. In our case, `ConsumerConfig.GROUP_ID_CONFIG` is the key to validate whether this consumer is approved.
> *What's the solution:*
> Add an option to disable `offsetConsumer` by developers;
> *What's the side effect:*
> With `offsetConsumer` disabled, backlog is unknown.
>
> [~rangadi] any comments?
>
>
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