[
https://issues.apache.org/jira/browse/KAFKA-5212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16116953#comment-16116953
]
Jason Gustafson commented on KAFKA-5212:
----------------------------------------
[~evis] The fetcher and the heartbeat share the same network client, so when
we're blocked in {{poll}} inside {{Fetcher}}, the heartbeat thread can't send
any heartbeats. In retrospect, we probably should have given the heartbeat
thread its own network client, but sharing made its initial implementation a
bit simpler. For now, maybe we just need to ensure that
{{sendListOffsetRequest}} takes the heartbeat thread into account when setting
its poll timeout.
> Consumer ListOffsets request can starve group heartbeats
> --------------------------------------------------------
>
> Key: KAFKA-5212
> URL: https://issues.apache.org/jira/browse/KAFKA-5212
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Reporter: Jason Gustafson
> Fix For: 1.0.0
>
>
> The consumer is not able to send heartbeats while it is awaiting a
> ListOffsets response. Typically this is not a problem because ListOffsets
> requests are handled quickly, but in the worst case if the request takes
> longer than the session timeout, the consumer will fall out of the group.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
