NDB Cluster Configuration Files reports from users nor any results from our own extensive tests suggesting that either of these compile- time limits should be increased. 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. 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. 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 • MaxFKBuildBatchSize • LongMessageBuffer • BatchSizePerLocalScan 4086 Version (or later) NDB 8.0.13 Type or units integer Default 256 Range 1 - 992 Deprecated NDB 8.0.19 Restart Type N (NDB 8.0.13) Version (or later) NDB 8.0.13 Type or units integer Default 64 Range 16 - 512 Restart Type N (NDB 8.0.13) Version (or later) NDB 8.0.13 Type or units integer Default 256 Range 2 - 500 Version (or later) NDB 8.0.13 Type or units bytes Default 64M Range 512K - 4294967039 (0xFFFFFEFF) Restart Type N (NDB 8.0.13)