[MCOL-5339] DDLProc[xx]: Could not connect to pmX_WriteEngineServer: Connection refused Created: 2022-12-08 Updated: 2024-02-07 |
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| Status: | Stalled |
| Project: | MariaDB ColumnStore |
| Component/s: | None |
| Affects Version/s: | 22.08.2, 22.08.4, 6.4.6, 23.02.3 |
| Fix Version/s: | 23.10 |
| Type: | Bug | Priority: | Critical |
| Reporter: | Allen Herrera | Assignee: | Roman |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | mcs_trg | ||
| Issue Links: |
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| Description |
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In CS 6.4.x and CS 22.08.4, a customer's DDLProc stops working quickly after a few create tables and a stored procedure. Attaching what I have. More triage is needed. Theres a lot of other activity on the server thats unknown to what extent its effecting columnstore. see /var/log/messages and youll see salt-minion, docker, slapd, pam_unix,postfix, prometheus and more. Customers Facing Issue
Work around is to mcsShutdown, clearShm and mcsStart. |
| Comments |
| Comment by Bryan Bancroft (Inactive) [ 2022-12-08 ] | |||||||||||||||||||||||||||||||||
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drrtuy additional logs attached to the case | |||||||||||||||||||||||||||||||||
| Comment by suresh ramagiri [ 2023-06-30 ] | |||||||||||||||||||||||||||||||||
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On of our customer too, hit this similar problem: All of the sudden, DDL execution i.e, create table for the CS engine, are failing with the error - "Internal error: Lost connection to DDLProc" Checking the syslogs can see recent DDLProc crashes triggered by unhandled exception in we_clients.cpp
DDLProc crashed:
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