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shamim8888 / asterixdb

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Add hint to ignore particular indexes #895

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
We should have a hint available (like the index and hash hints) that allows a 
user to ignore a particular index. This can be desirable when a user knows that 
a particular index that is available is less selective than another index that 
is of a lower priority (e.g. a RTree index that is not very selective would be 
used in favor of a Inverted keyword index, even if that index is highly 
selective). Right now the only way to do this would be to drop the 
higher-priority index entirely.

Original issue reported on code.google.com by ima...@uci.edu on 8 Jun 2015 at 11:47

GoogleCodeExporter commented 8 years ago 
PS - The idea would be to be able to give the name of an index that should be 
ignored (or a list of such names).

Original comment by dtab...@gmail.com on 9 Jun 2015 at 5:35

GoogleCodeExporter commented 8 years ago 
PPS - Or else the name of an index that should be used for sure (if we wanted 
to force a particular choice).

Original comment by dtab...@gmail.com on 9 Jun 2015 at 5:36

GoogleCodeExporter commented 8 years ago 
As Mike suggested, putting a hint that indicates the name of index that we want 
to use would be nice.

Original comment by wangs...@gmail.com on 11 Jun 2015 at 7:56