2 Replies Latest reply on May 21, 2013 12:54 PM by cotton.ben

exact semantic meaning of HashConfigurationBuilder#numOwners() ?

cotton.ben May 21, 2013 11:38 AM

the 5.3 Javadoc for HashConfigurationBuilder#numOwners(int numOwners) reads simply

"Number of cluster-wide replicas for each cache entry".

Just to be absoultely certain, if I specify numOwners=1 as the method argument then exactly 1 instance of the Entry will appear on the grid at exactly one node (i.e. no replications of the Entry)? Or does it literally mean "number of cluster-wide replicas" .. in which case I would specify numOwners=0 (does that ever make sense to indicate numOwners=0?) to indicate that zero replicas (and only the 1 original Entry) are to appear on the grid?

1. Re: exact semantic meaning of HashConfigurationBuilder#numOwners() ?

pruivo May 21, 2013 11:45 AM (in response to cotton.ben)

Hi Ben,

the first sentence is the correct: numOnwers=1 means the entry is stored exactly at one node.

numOwners=0 is not a valid configuration because each entry has to be stored at least on one node.

Cheers,
Pedro
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2. Re: exact semantic meaning of HashConfigurationBuilder#numOwners() ?

cotton.ben May 21, 2013 12:54 PM (in response to pruivo)

thanks Pedro.
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