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https://issues.apache.org/jira/browse/FLINK-13169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16885778#comment-16885778
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Till Rohrmann commented on FLINK-13169:
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Made this a critical issue for 1.9.0. I would like to get this included to
ensure that fine grained recovery works in 1.9.0. cc [~tzulitai] [~ykt836].
> IT test for fine-grained recovery (task executor failures)
> ----------------------------------------------------------
>
> Key: FLINK-13169
> URL: https://issues.apache.org/jira/browse/FLINK-13169
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Coordination
> Reporter: Andrey Zagrebin
> Assignee: Andrey Zagrebin
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.9.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The BatchFineGrainedRecoveryITCase can be extended with an additional test
> failure strategy which abruptly shuts down the task executor. This leads to
> the loss of all previously completed and the in-progress mapper result
> partitions. The fail-over strategy should restart the current in-progress
> mapper which will get the PartitionNotFoundException because the previous
> result becomes unavailable and the previous mapper has to be restarted as
> well. The same should happen subsequently with all previous mappers. When the
> source is recomputed, all mappers has to be restarted again to recalculate
> their lost results.
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