org.locationtech.geomesa.raster.iterators
SetTopIndexUnique
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package iterators
Returns a local estimate as to whether the current identifier is likely to be a duplicate.
Returns a local estimate as to whether the current identifier is likely to be a duplicate.
Because we set a limit on how many unique IDs will be preserved in the local cache, a TRUE response is always accurate, but a FALSE response may not be accurate. (That is, this cache allows for false- negatives, but no false-positives.) We accept this, because there is a final, client-side filter that will eliminate all duplicate IDs definitively. The purpose of the local cache is to reduce traffic through the remainder of the iterator/aggregator pipeline as quickly as possible.
False if this identifier is in the local cache; True otherwise
for index iterator - no eval, just return value
for index iterator - no eval, just return value
for index iterator - eval uniqueness