NearestNeighbours With ManagedWorkspaces

[Owen Arnold]

NearestNeighbours is NotFoundException during ::defaultNeighbours() method for managed workspaces. This is not happening for pure in-memory workspaces.

To reproduce. *Generate a managed workspace *Run smooth neighbours algorithm on that workspace *Fails to find spectrum index 1 and throws

[Owen Arnold]

Fixed as part of #4080.

For the tester: As expected, the smoothneighbours algorithm takes a long time to run on a managed workspace. To test this ticket, try the following:

• Load a wish file. These can be found in the data directory of mantid in raw format.
• Keep repeating the first step until you have a managed workspace, or reduce the user properties file memory threshold to 1. Remember to unset your changes to property files after testing!
• Once you have a managed workspace open run the smoothneighbours algorithm with numberofneighbours = 35, provideradius=false, weights=false. This is going to take a long time, over 3hours on my machine, so best to run it overnight.
• you might like to compare the results of running this algorithm on a unmanaged workspace using checkworkspacesmatch. Ignore differences in the number of logs.

[Stuart Campbell]

Used raw file WISH00016748.raw, loaded as both a managed and unmanaged workspace. Then ran SmoothNeighbours with RadiusUnits=NumberOfPixels, Radius=3, NumberOfNeighbours=35, WeightedSum=35.

[Owen Arnold]

refs #4075. Disable managed workspaces. See #4471

Changeset: 1d70848daea66e6dbabdc03133334276dc9592ec

[Stuart Campbell]

If you try to run now with a Managed Workspace you get

SmoothNeighbours started
Error in execution of algorithm SmoothNeighbours:
SmoothNeighbours algorithm cannot be used with Managed Workspaces

which is the correct behaviour.

[Stuart Campbell]

This ticket has been transferred to github issue ​4922