[GitHub] keith-turner commented on a change in pull request #49: Improved design documentation of tablet server

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keith-turner commented on a change in pull request #49: Improved design documentation of tablet server
URL: https://github.com/apache/accumulo-website/pull/49#discussion_r157241862
 
 

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 File path: _docs-2-0/getting-started/design.md
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 @@ -112,10 +112,14 @@ called a minor compaction. A new MemTable is then created and the fact of the
 compaction is recorded in the Write-Ahead Log.
 
 When a request to read data arrives at a TabletServer, the TabletServer does a
-binary search across the MemTable as well as the in-memory indexes associated
-with each RFile to find the relevant values. If clients are performing a scan,
-several key-value pairs are returned to the client in order from the MemTable
-and the set of RFiles by performing a merge-sort as they are read.
+binary search across the MemTable as well as the index blocks associated with each RFile
+to find the relevant values. If clients are performing a scan, several key-value pairs
+are returned to the client in order from the MemTable and data blocks of RFiles by performing
+a merge-sort as they are read. If [caching] is enabled for the table, any index or data
 
 Review comment:
   I think `sorted merge` would be more accurate than `merge-sort`.  The data is already sorted and `merge-sort` is the name of an algorithm for sorting unsorted data.

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