Index: src/docbkx/book.xml
===================================================================
--- src/docbkx/book.xml (revision 1160978)
+++ src/docbkx/book.xml (working copy)
@@ -263,6 +263,21 @@
compactions. The number of versions may need to be increased or decreased depending on application needs.
+
+
+ Minimum Number of Versions
+
+ Like number of row versions, the minimum number of row versions to keep is configured per column
+ family via HColumnDescriptor.
+ The default is 0, which means the feature is disabled.
+ The minimum number of row versions parameter is used together with the time-to-live parameter and can be combined with the
+ number of row versions parameter to allow configurations such as
+ "keep the last T minutes worth of data, at most N versions, but keep at least M versions around"
+ (where M is the value for minimum number of row versions, M<=N).
+ This parameter should only be set when time-to-live is enabled for a column family and must be less or equal to the
+ number of row versions.
+
+
Immutability of Rowkeys