[MCOL-1738] ExeMgr causes OOM restart after 2~ hours Created: 2018-09-21  Updated: 2019-06-14  Resolved: 2019-06-14

Status: Closed
Project: MariaDB ColumnStore
Component/s: ExeMgr
Affects Version/s: 1.1.6
Fix Version/s: Icebox

Type: Bug Priority: Blocker
Reporter: Dalu (Inactive) Assignee: Unassigned
Resolution: Fixed Votes: 1
Labels: None
Environment:

Ubuntu 18.04
512GB Ram Singlenode Server



 Description   

We set up a new Singlenode MariaDb Columnstore Server to gather some statistics every day.
Running about 300~ Queries a 60~ seconds, 4 at a time.

While the queries are running the ExeMgr slowly fills up the complete RAM till the complete 512GB RAM are full and the Columstore restarts because of OOM.

Already tried to reduce all RAM related Configs in the Columnstore.xml like
NumBlocksPct, TotalUmMemory, TotalPmUmMemory

No difference, still causing OOM after about 2 hours



 Comments   
Comment by Andrew Hutchings (Inactive) [ 2018-09-24 ]

Can you please send a ColumnStore support report as outlined here? We can then start to build a picture as to why this is happening:

https://mariadb.com/kb/en/library/system-troubleshooting-mariadb-columnstore/#mariadb-columnstore-support-report-tool

Comment by Dalu (Inactive) [ 2019-06-14 ]

this bug is fixed with 1.1.7 / 1.2.2

Comment by Andrew Hutchings (Inactive) [ 2019-06-14 ]

Closed due to being reported fixed by user.

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