[SERVER-46078] sudden spike in connections for mongos Created: 11/Feb/20  Updated: 13/Feb/20  Resolved: 13/Feb/20

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Question Priority: Major - P3
Reporter: sudheer reddy bholla Assignee: Unassigned
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Attachments: PNG File image-2020-02-11-11-04-03-825.png    
Participants:

 Description   

mongodb version used : 3.4.10

instance type : t2.medium (2 cpu,4 gb ram)

present parameter settings :
"ShardingTaskExecutorPoolHostTimeoutMS" : 300000.0,
"ShardingTaskExecutorPoolMaxConnecting" : -1.0,
"ShardingTaskExecutorPoolMaxSize" : -1.0,
"ShardingTaskExecutorPoolMinSize" : 1.0,
"ShardingTaskExecutorPoolRefreshRequirementMS" : 60000.0,
"ShardingTaskExecutorPoolRefreshTimeoutMS" : 20000.0,
"connPoolMaxConnsPerHost" : 200.0,
"connPoolMaxShardedConnsPerHost" : 200.0,
"cursorTimeoutMillis" : NumberLong(600000),
"taskExecutorPoolSize" : 0.0,

I think the issue is related to ticket(https://jira.mongodb.org/browse/SERVER-25027)  but as per the documentation for version 3.4 the parameter taskExecutorPoolSize should have values from 4-64 ,I am confused as we have this parameter set to 0 

what does value 0 for  taskExecutorPoolSize parameter mean in version 3.4

 

 

 

 



 Comments   
Comment by Carl Champain (Inactive) [ 13/Feb/20 ]

Hi sudheer.bholla@practicefusion.com,

MongoDB 3.4 is already end-of-lifed, which means it is unsupported by us. We strongly recommend you upgrade to a supported version.

That said, the SERVER project is for bugs and feature suggestions for the MongoDB server. As this ticket does not appear to be a bug, I will now close it. If you need assistance troubleshooting, I encourage you to ask our community by posting on the mongodb-user group or on Stack Overflow with the mongodb tag.

Kind regards,
Carl

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