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https://issues.jboss.org/browse/ISPN-3640?page=com.atlassian.jira.plugin....
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Mircea Markus commented on ISPN-3640:
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{quote}re: Map/Reduce jobs to operate on the subset only{quote}
It depends how you implement the view cache: if it just a filtering decorator (no state)
around the actual cache then the the M/R will still iterate over all the entries and
ignore them. If the view has state (the filtered keys only), the map reduce iteration
would work indeed faster.
Extend KeyFilter facility to the whole cache
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Key: ISPN-3640
URL:
https://issues.jboss.org/browse/ISPN-3640
Project: Infinispan
Issue Type: Feature Request
Components: Core
Affects Versions: 6.0.0.CR1
Reporter: Paul Ferraro
Assignee: Mircea Markus
The key filter facility is very convenient for users who have multiple key types in the
same cache. It would be very handy if this feature were extended to the whole cache.
e.g.
Cache<?, ?> cache = ...;
KeyFilter filter = ...;
Cache<K, V> view = cache.filter(filter);
view.addListener(listener) // Equivalent to the current cache.addListener(listener,
filter) method
for (Map.Entry<K, V> entry: view.entrySet()) {
...
}
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