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• ODirect 

<img src='content_image/696214.jpg'>

Enabling this parameter causes NDB  to attempt using O_DIRECT  writes for LCP, backups, and redo logs, often lowering kswapd  and CPU usage. When using NDB Cluster on Linux, enable ODirect  if you are using a 2.6 or later kernel. 

ODirect  is disabled by default. 

• ODirectSyncFlag 

<img src='content_image/696213.jpg'>

When this parameter is enabled, redo log writes are performed such that each completed file system write is handled as a call to fsync . The setting for this parameter is ignored if at least one of the following conditions is true: 

• ODirect  is not enabled. 

• InitFragmentLogFiles  is set to SPARSE . 

Disabled by default. 

• RestartOnErrorInsert 

<img src='content_image/696212.jpg'>

This feature is accessible only when building the debug version where it is possible to insert errors in the execution of individual blocks of code as part of testing. 

This feature is disabled by default. 

• StopOnError 

<img src='content_image/696211.jpg'>

