NDB Cluster Configuration Files • MaxParallelScansPerFragment • MaxReorgBuildBatchSize • MaxUIBuildBatchSize 4088 This parameter was used in older versions of NDB Cluster, but has no effect in NDB 8.0. It is deprecated as of NDB 8.0.27, and subject to removal in a future release. Maximum scan batch size used for building unique keys. Increasing the value set for this parameter may speed up such builds at the expense of greater impact to ongoing traffic. MaxAllocate Maximum scan batch size used for reorganization of table partitions. Increasing the value set for this parameter may speed up reorganization at the expense of greater impact to ongoing traffic. It is possible to configure the maximum number of parallel scans ( TUP  scans and  TUX  scans) allowed before they begin queuing for serial handling. You can increase this to take advantage of any unused CPU when performing large number of scans in parallel and improve their performance. Memory Allocation Version (or later) NDB 8.0.13 Type or units bytes Default 256 Range 1 - 4294967039 (0xFFFFFEFF) 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 64 Range 16 - 512 Restart Type N (NDB 8.0.13) Version (or later) NDB 8.0.13 Type or units unsigned Default 32M Range 1M - 1G Deprecated NDB 8.0.27 Restart Type N (NDB 8.0.13)