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https://issues.apache.org/jira/browse/BEAM-8157?focusedWorklogId=309090&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-309090
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ASF GitHub Bot logged work on BEAM-8157:
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Author: ASF GitHub Bot
Created on: 09/Sep/19 17:27
Start Date: 09/Sep/19 17:27
Worklog Time Spent: 10m
Work Description: mxm commented on issue #9484: [BEAM-8157] Remove length
prefix from state key for Flink's state backend
URL: https://github.com/apache/beam/pull/9484#issuecomment-529583668
@tweise Are you sure you tested with the most recent version of this PR? I
had updated the PR. Sorry if that was not clear. We need the orginal coder used
to removed the nested encoding, since the ByteStringCoder in the state handler
does not provide any information of the key encoding used.
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Issue Time Tracking
-------------------
Worklog Id: (was: 309090)
Time Spent: 3h 40m (was: 3.5h)
> [Flink Runner 1.9] State requests return wrong state in timers when encoded
> key is length-prefixed
> --------------------------------------------------------------------------------------------------
>
> 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: Major
> Fix For: 2.16.0
>
> Time Spent: 3h 40m
> 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.
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