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reports from users nor any results from our own extensive tests suggesting that either of these compile- time limits should be increased. 

• BatchSizePerLocalScan 

<img src='content_image/824980.jpg'>

This parameter is used to calculate the number of lock records used to handle concurrent scan operations. 

BatchSizePerLocalScan  has a strong connection to the BatchSize  defined in the SQL nodes. 

Deprecated as of NDB 8.0.19. 

• LongMessageBuffer 

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This is an internal buffer used for passing messages within individual nodes and between nodes. The default is 64MB. 

This parameter seldom needs to be changed from the default. 

• MaxFKBuildBatchSize 

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Maximum scan batch size used for building foreign keys. Increasing the value set for this parameter may speed up building of foreign key builds at the expense of greater impact to ongoing traffic. 

• MaxNoOfConcurrentScans 

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