[
https://issues.apache.org/jira/browse/FLINK-19109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17189373#comment-17189373
]
Roman Khachatryan commented on FLINK-19109:
-------------------------------------------
I've published a [PR|https://github.com/apache/flink/pull/13305] to fix the
issue in 1.12 and 1.11.
For 1.10, the fix would be problematic as it would likely require backporting
[changes to
ContinuousFileReaderOperator|https://github.com/apache/flink/pull/10435] and
[OperatorChain / timers|https://github.com/apache/flink/pull/10151]. Given
that there are several workarounds, I think the fix for 1.11 and 1.12 will
suffice.
> Split Reader eats chained periodic watermarks
> ---------------------------------------------
>
> Key: FLINK-19109
> URL: https://issues.apache.org/jira/browse/FLINK-19109
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Task
> Affects Versions: 1.10.0, 1.10.1, 1.11.0, 1.10.2, 1.11.1
> Reporter: David Anderson
> Assignee: Roman Khachatryan
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.12.0, 1.11.2, 1.10.3
>
>
> Attempting to generate watermarks chained to the Split Reader /
> ContinuousFileReaderOperator, as in
> {code:java}
> SingleOutputStreamOperator<Event> results = env
> .readTextFile(...)
> .map(...)
> .assignTimestampsAndWatermarks(bounded)
> .keyBy(...)
> .process(...);{code}
> leads to the Watermarks failing to be produced. Breaking the chain, via
> {{disableOperatorChaining()}} or a {{rebalance}}, works around the bug. Using
> punctuated watermarks also avoids the issue.
> Looking at this in the debugger reveals that timer service is being
> prematurely quiesced.
> In many respects this is FLINK-7666 brought back to life.
> The problem is not present in 1.9.3.
> There's a minimal reproducible example in
> [https://github.com/alpinegizmo/flink-question-001/tree/bug].
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
