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https://issues.apache.org/jira/browse/BEAM-8157?focusedWorklogId=340804&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-340804
]
ASF GitHub Bot logged work on BEAM-8157:
----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Nov/19 23:07
Start Date: 08/Nov/19 23:07
Worklog Time Spent: 10m
Work Description: tweise commented on pull request #9997: [BEAM-8157] Fix
key encoding issues for state requests with unknown coders / Improve debugging
and testing
URL: https://github.com/apache/beam/pull/9997#discussion_r344400891
##########
File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkPipelineRunner.java
##########
@@ -98,6 +100,8 @@ PortablePipelineResult runPipelineWithTranslator(
? trimmedPipeline
: GreedyPipelineFuser.fuse(trimmedPipeline).toPipeline();
+ fusedPipeline = lengthPrefixKeyCoderOfStatefulStages(fusedPipeline);
Review comment:
And could potentially be pulled up into `JobInvocation`, which is already
shared.
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Issue Time Tracking
-------------------
Worklog Id: (was: 340804)
Time Spent: 9h 20m (was: 9h 10m)
> Key encoding for state requests is not consistent across SDKs
> -------------------------------------------------------------
>
> Key: BEAM-8157
> URL: https://issues.apache.org/jira/browse/BEAM-8157
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Affects Versions: 2.13.0
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Critical
> Fix For: 2.17.0
>
> Time Spent: 9h 20m
> Remaining Estimate: 0h
>
> The Flink runner requires the internal key to be encoded without a length
> prefix (OUTER context). The user state request handler exposes a serialized
> version of the key to the Runner. This key is encoded with the NESTED context
> which may add a length prefix. We need to convert it to OUTER context to
> match the Flink runner's key encoding.
> So far this has not caused the Flink Runner to behave incorrectly. However,
> with the upcoming support for Flink 1.9, the state backend will not accept
> requests for keys not part of any key group/partition of the operator. This
> is very likely to happen with the encoding not being consistent.
> **NOTE** This is only applicable to the Java SDK, as the Python SDK uses
> OUTER encoding for the key in state requests.
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