content_image/797927.jpg content_image/797928.jpg content_image/797930.jpg content_image/797936.jpg content_image/797939.jpg
uncompressed checkpoint files. Compressed LCPs can be enabled for individual data nodes, or for all data nodes (by setting this parameter in the [ndbd default]  section of the config.ini  file). 

<img src='content_image/797927.jpg'>

The default value is 0  (disabled). 

## • CrashOnCorruptedTuple 

## Important 

You cannot restore a compressed local checkpoint to a cluster running a MySQL version that does not support this feature. 

<img src='content_image/797928.jpg'>

When this parameter is enabled (the default), it forces a data node to shut down whenever it encounters a corrupted tuple. 

## • Diskless 

<img src='content_image/797930.jpg'>

It is possible to specify NDB Cluster tables as diskless , meaning that tables are not checkpointed to disk and that no logging occurs. Such tables exist only in main memory. A consequence of using diskless tables is that neither the tables nor the records in those tables survive a crash. However, when operating in diskless mode, it is possible to run ndbd  on a diskless computer. 

<img src='content_image/797936.jpg'>

## Important 

This feature causes the entire  cluster to operate in diskless mode. 

When this feature is enabled, Cluster online backup is disabled. In addition, a partial start of the cluster is not possible. 

Diskless  is disabled by default. 

## • LateAlloc 

<img src='content_image/797939.jpg'>

