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Make the MaxWaiters setting configurable for the OLAP pool. #9484

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Jan 10, 2022
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Make the MaxWaiters setting configurable for the OLAP pool. #9484

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1 change: 1 addition & 0 deletions go/vt/vttablet/tabletserver/tabletenv/config.go
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Original file line number Diff line number Diff line change
Expand Up @@ -117,6 +117,7 @@ func init() {
SecondsVar(&currentConfig.TxPool.TimeoutSeconds, "queryserver-config-txpool-timeout", defaultConfig.TxPool.TimeoutSeconds, "query server transaction pool timeout, it is how long vttablet waits if tx pool is full")
SecondsVar(&currentConfig.OltpReadPool.IdleTimeoutSeconds, "queryserver-config-idle-timeout", defaultConfig.OltpReadPool.IdleTimeoutSeconds, "query server idle timeout (in seconds), vttablet manages various mysql connection pools. This config means if a connection has not been used in given idle timeout, this connection will be removed from pool. This effectively manages number of connection objects and optimize the pool performance.")
flag.IntVar(&currentConfig.OltpReadPool.MaxWaiters, "queryserver-config-query-pool-waiter-cap", defaultConfig.OltpReadPool.MaxWaiters, "query server query pool waiter limit, this is the maximum number of queries that can be queued waiting to get a connection")
flag.IntVar(&currentConfig.OlapReadPool.MaxWaiters, "queryserver-config-stream-pool-waiter-cap", defaultConfig.OlapReadPool.MaxWaiters, "query server stream pool waiter limit, this is the maximum number of streaming queries that can be queued waiting to get a connection")
flag.IntVar(&currentConfig.TxPool.MaxWaiters, "queryserver-config-txpool-waiter-cap", defaultConfig.TxPool.MaxWaiters, "query server transaction pool waiter limit, this is the maximum number of transactions that can be queued waiting to get a connection")
// tableacl related configurations.
flag.BoolVar(&currentConfig.StrictTableACL, "queryserver-config-strict-table-acl", defaultConfig.StrictTableACL, "only allow queries that pass table acl checks")
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