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https://issues.apache.org/jira/browse/ACCUMULO-3281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Elser updated ACCUMULO-3281:
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Fix Version/s: (was: 1.7.0)
1.8.0
> Leverage SortedMap methods in Tablet methods that iterate over Key/Values
> -------------------------------------------------------------------------
>
> Key: ACCUMULO-3281
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3281
> Project: Accumulo
> Issue Type: Improvement
> Components: tserver
> Reporter: Josh Elser
> Assignee: Josh Elser
> Priority: Minor
> Fix For: 1.8.0
>
>
> Noticed the following methods in Tablet could be a little more efficient:
> * {{lookupLogEntries(KeyExtent, SortedMap)}}
> * {{lookupScanFiles(KeyExtent, SortedMap, VolumeManager)}}
> * {{lookupFlushID(KeyExtent, SortedMap)}}
> * {{lookupCompactID(KeyExtent, SortedMap)}}
> Each of these methods iterates over the SortedMap of KeyValues which a
> collection of columns from this tablet's row in {{metadata}}.
> Some of them iterate over the "headMap" to consume keys they don't care
> about. Others always iterate over all of the values in the map. All of these
> methods only care about some sequence of values in the map and could use
> methods like {{tailMap}} or {{subMap}}.
> I doubt there would be a noticeable improvement (since the number of
> key-value pairs for a tablet shouldn't ever really be more than a hundred or
> so), but since we already have the sorted structure, it would be nice to use
> it.
> It would also be nice to write some unit tests for these methods while we're
> at it.
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