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https://issues.apache.org/jira/browse/IMPALA-10794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Quanlong Huang resolved IMPALA-10794.
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Fix Version/s: Impala 4.2.0
Resolution: Fixed
> Improve observability of execDdl code paths
> -------------------------------------------
>
> Key: IMPALA-10794
> URL: https://issues.apache.org/jira/browse/IMPALA-10794
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog, Frontend
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Critical
> Labels: observability, supportability
> Fix For: Impala 4.2.0
>
>
> It's hard to debug a hanging DDL/DML:
> * The last log before coordinator sending execDdl RPC to catalogd is
> "Analysis and authorization finished."
> * Catalogd just prints logs when it finishes the HMS operations and start
> reloading metadata incrementally.
> It'd be helpful to add logs:
> * On coordinator side, add logs when start/finish the execDdl RPCs.
> * On catalogd side, add logs when start/finish executing an execDdl request.
> More loggings in specifit complex ddls will also be helpful.
> We also need to add thread annotation in catalogd for the part executing HMS
> RPCs. We currently only have them in loading metadata. That's not enough.
> CC [~vihangk1] who may already have a draft for this.
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