keith-turner commented on a change in pull request #38: Continue tour
URL: https://github.com/apache/accumulo-website/pull/38#discussion_r150927221
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File path: tour/ranges-splits.md
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@@ -0,0 +1,36 @@
+---
+title: Ranges and Splits
+---
+
+A Range is a specified group of Keys. There are many different ways to create
a Range. Here are a few examples:
+```java
+new Range(Key startKey, Key endKey) // Creates a range from startKey
inclusive to endKey inclusive.
+new Range(CharSequence row) // Creates a range that covers an entire row.
+new Range(CharSequence startRow, CharSequence endRow) // Creates a range from
startRow inclusive to endRow inclusive.
+```
+
+A Scanner by default will scan all Keys in a table but this can be
inefficient. It is a good practice to set a range on a Scanner.
+```java
+scanner.setRange(new Range("id0000", "id0010")); // returns rows from id0000
to id0010
+```
+
+As your data grows larger, Accumulo will split tables across multiple servers
called Tablet Servers.
+By default a table will get split on row boundaries, guaranteeing an entire
row to be on one Tablet Server. We have the ability to
+tell Accumulo were to split tables by setting split points. This is done using
_addSplits_ in the [TableOperations] API. The image below
+demonstrates how Accumulo splits data.
Review comment:
Should mention Tablets in this paragraph.
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