NDB Cluster Configuration Files Both this parameter and  StartFailRetryDelay  are ignored unless  StopOnError  is equal to 0. NDB index statistics parameters.  The parameters in the following list relate to NDB index statistics generation. • IndexStatAutoCreate • IndexStatAutoUpdate Enable (set equal to 1) or disable (set equal to 0) automatic statistics collection when indexes are created. Disabled by default. Maximum space in bytes allowed for the saved statistics of any given index in the  NDB  system tables and in the  mysqld  memory cache. At least one sample is always produced, regardless of any size limit. This size is scaled by IndexStatSaveScale . The size specified by  IndexStatSaveSize  is scaled by the value of  IndexStatTriggerPct  for a large index, times 0.01. This is further multiplied by the logarithm to the base 2 of the index size. Setting IndexStatTriggerPct  equal to 0 disables the scaling effect. • IndexStatSaveScale 4149 Version (or later) NDB 8.0.13 Type or units integer Default 0 Range 0, 1 Restart Type N (NDB 8.0.13) Version (or later) NDB 8.0.13 Type or units bytes Default 32768 Range 0 - 4294967039 (0xFFFFFEFF) Restart Type IN (NDB 8.0.13) Enable (set equal to 1) or disable (set equal to 0) monitoring of indexes for changes and trigger automatic statistics updates these are detected. The amount and degree of change needed to trigger the updates are determined by the settings for the  IndexStatTriggerPct  and IndexStatTriggerScale  options. • IndexStatSaveSize Version (or later) NDB 8.0.13 Type or units integer Default 0 Range 0, 1 Restart Type N (NDB 8.0.13) Version (or later) NDB 8.0.13