GitHub user tzulitai opened a pull request:
https://github.com/apache/flink/pull/4344
(release-1.3) [FLINK-7195] [kafka] Remove partition list querying when
restoring state in FlinkKafkaConsumer
This issue is a re-appearance of FLINK-6006. On restore, we should not
respect any fetched partitions list from Kafka and perform any filtering of the
restored partition states. There are corner cases where, due to Kafka broker
downtime, some partitions may be missing in the fetched partition list.
Therefore, we should not respect the fetched partitions list on restore time to
manipulate the restored state, which may lead to broken state. To be more
precise, we actually should not require fetching partitions on restore.
We've stepped on our own foot again and reintroduced this bug in
ed68fedbe90db03823d75a020510ad3c344fa73e. This PR adds proper unit tests for
this that does not rely on the internal implementations and test only on public
abstractions of `FlinkKafkaConsumerBase`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tzulitai/flink FLINK-7195
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4344.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #4344
----
commit 12af5d8b0e43b62935dc619258fb8f957b11d0bc
Author: Tzu-Li (Gordon) Tai <[email protected]>
Date: 2017-07-14T11:51:03Z
[FLINK-7195] [kafka] Remove partition list querying when restoring state in
FlinkKafkaConsumer
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
