increase DefaultConcurrency settings for drivers

Author: KSDaemon

packages/cubejs-athena-driver/src/AthenaDriver.ts

@@ -76,7 +76,7 @@ export class AthenaDriver extends BaseDriver implements DriverInterface {
    * Returns default concurrency value.
    */
   public static getDefaultConcurrency(): number {
-    return 5;
+    return 10;
   }
 
   private config: AthenaDriverOptionsInitialized;

packages/cubejs-clickhouse-driver/src/ClickHouseDriver.ts

@@ -119,7 +119,7 @@ export class ClickHouseDriver extends BaseDriver implements DriverInterface {
    * Returns default concurrency value.
    */
   public static getDefaultConcurrency(): number {
-    return 5;
+    return 10;
   }
 
   // ClickHouseClient has internal pool of several sockets, no need for generic-pool

packages/cubejs-databricks-jdbc-driver/src/DatabricksDriver.ts

@@ -147,7 +147,7 @@ export class DatabricksDriver extends JDBCDriver {
    * Returns default concurrency value.
    */
   public static getDefaultConcurrency(): number {
-    return 2;
+    return 10;
   }
 
   /**

packages/cubejs-firebolt-driver/src/FireboltDriver.ts

@@ -46,7 +46,7 @@ export class FireboltDriver extends BaseDriver implements DriverInterface {
    * Returns default concurrency value.
    */
   public static getDefaultConcurrency(): number {
-    return 5;
+    return 10;
   }
 
   private config: FireboltDriverConfiguration;

packages/cubejs-pinot-driver/src/PinotDriver.ts

@@ -74,7 +74,7 @@ export class PinotDriver extends BaseDriver implements DriverInterface {
    * Returns default concurrency value.
    */
   public static getDefaultConcurrency() {
-    return 2;
+    return 10;
   }
 
   private config: PinotDriverConfiguration;

packages/cubejs-redshift-driver/src/RedshiftDriver.ts

@@ -57,7 +57,7 @@ export class RedshiftDriver extends PostgresDriver<RedshiftDriverConfiguration>
    * Returns default concurrency value.
    */
   public static getDefaultConcurrency(): number {
-    return 4;
+    return 5;
   }
 
   /**

packages/cubejs-snowflake-driver/src/SnowflakeDriver.ts

@@ -195,7 +195,7 @@ export class SnowflakeDriver extends BaseDriver implements DriverInterface {
    * Returns default concurrency value.
    */
   public static getDefaultConcurrency(): number {
-    return 5;
+    return 8;
   }
 
   public static driverEnvVariables() {