[MCOL-1442] My mariadb columnstore cluster has 2 UM's and 4 PM's either one um is down then not able access the database Created: 2018-05-24  Updated: 2021-01-15

Status: Closed
Project: MariaDB ColumnStore
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: Major
Reporter: Sonu Wilson Assignee: Unassigned
Resolution: Unresolved Votes: 0
Labels: None


 Description   

My mariadb columnstore cluster has 2 UM's and 4 PM's either one um is down the system goes into busy init state and come backs to active state but data base is not accessible the below error shows ERROR 1815 (HY000): Internal error: Lost connection to ExeMgr. Please contact your administrator. after restarting the columnstore cluster it works .

 Comments   
Comment by David Hill (Inactive) [ 2018-05-24 ]

The lost connect error reported by the mcsmysql console, does it happen everytime or just the first time you try?
Could you provide this additional information, thanks:

1. OS
2. root or non-root install
3. type of system, servers, cloud instance, VMs?
4. MCS version that is installed.

Thanks for reporting, will investigate.

Comment by Nicola [ 2018-07-10 ]

Hi all,
I've the same problem.
My configuration is :
2 um and 3 pm with gluster fs (version 1.1.5).
They are all vm in Vmware Hypervisor version 6.5.
Os Version : Oracle Linux 7.5

Thanks,
Regards.

Comment by Andrew Hutchings (Inactive) [ 2019-12-04 ]

Need the output of the columnstoreSupport tool to diagnose further.

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