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https://issues.apache.org/jira/browse/STORM-2546?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated STORM-2546:
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Labels: pull-request-available (was: )
> Kafka spout can stall / get stuck due to edge case with failing tuples
> ----------------------------------------------------------------------
>
> Key: STORM-2546
> URL: https://issues.apache.org/jira/browse/STORM-2546
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-kafka-client
> Affects Versions: 2.0.0, 1.x
> Reporter: Prasanna Ranganathan
> Assignee: Stig Rohde Døssing
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The mechanism for replaying a failed tuple involves seeking the kafka
> consumer to the failing offset and then re-emitting it into the topology. A
> tuple, when emitted the first time, will have an entry created in
> OffsetManager. This entry will be removed only after the tuple is
> successfully acknowledged and its offset successfully committed. Till then,
> commits for offsets beyond the failing offset for that TopicPartition will be
> blocked.
> It is possible that when the spout seeks the consumer to the failing offset,
> the corresponding kafka message is not returned in the poll response. This
> can happen due to that offset being deleted or compacted away. In this
> scenario that partition will be blocked from committing and progressing.
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