[jira] [Resolved] (IMPALA-10794) Improve observability of execDdl code paths

["Quanlong Huang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-10794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Quanlong Huang resolved IMPALA-10794.
-------------------------------------
    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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