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https://issues.apache.org/jira/browse/FLINK-31182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17696532#comment-17696532
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Jane Chan commented on FLINK-31182:
-----------------------------------
Hi [~twalthr], thanks for the fix! LGTM, and feel free to merge.
> CompiledPlan cannot deserialize BridgingSqlFunction with MissingTypeStrategy
> ----------------------------------------------------------------------------
>
> Key: FLINK-31182
> URL: https://issues.apache.org/jira/browse/FLINK-31182
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.17.0, 1.18.0, 1.17.1
> Reporter: Jane Chan
> Assignee: Timo Walther
> Priority: Major
> Labels: pull-request-available
> Attachments: screenshot-1.png
>
>
> This issue is reported from the [user mail
> list|https://lists.apache.org/thread/y6fgzyx330omhkr40376knw8k4oczz3s].
> The stacktrace is
> {code:java}
> Unable to find source-code formatter for language: text. Available languages
> are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go,
> groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc,
> perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml,
> yamlCaused by: org.apache.flink.table.api.TableException: Could not resolve
> internal system function '$UNNEST_ROWS$1'. This is a bug, please file an
> issue.
> at
> org.apache.flink.table.planner.plan.nodes.exec.serde.RexNodeJsonDeserializer.deserializeInternalFunction(RexNodeJsonDeserializer.java:392)
> at
> org.apache.flink.table.planner.plan.nodes.exec.serde.RexNodeJsonDeserializer.deserializeSqlOperator(RexNodeJsonDeserializer.java:337)
> at
> org.apache.flink.table.planner.plan.nodes.exec.serde.RexNodeJsonDeserializer.deserializeCall(RexNodeJsonDeserializer.java:307)
> at
> org.apache.flink.table.planner.plan.nodes.exec.serde.RexNodeJsonDeserializer.deserialize(RexNodeJsonDeserializer.java:146)
> at
> org.apache.flink.table.planner.plan.nodes.exec.serde.RexNodeJsonDeserializer.deserialize(RexNodeJsonDeserializer.java:128)
> at
> org.apache.flink.table.planner.plan.nodes.exec.serde.RexNodeJsonDeserializer.deserialize(RexNodeJsonDeserializer.java:115)
> {code}
> The root cause is that although ModuleManager can resolve '$UNNEST_ROWS$1',
> the output type strategy is "Missing"; as a result,
> FunctionCatalogOperatorTable#convertToBridgingSqlFunction returns empty.
> !screenshot-1.png|width=675,height=295!
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