Index: src/main/java/org/apache/hadoop/hbase/client/Increment.java =================================================================== --- src/main/java/org/apache/hadoop/hbase/client/Increment.java (revision 1035956) +++ src/main/java/org/apache/hadoop/hbase/client/Increment.java (working copy) @@ -82,10 +82,14 @@ } /** - * Increment the column from the specific family with the specified qualifier + * Increment the column from the specified family with the specified qualifier * by the specified amount. *
- * Overrides previous calls to addColumn for this family and qualifier.
+ * For a single instance of Increment, method overrides previous calls to
+ * addColumn for this family and qualifier. Use
+ * {@link #incrementColumn(byte[], byte[], long)} to have multiple calls for
+ * the same column summed rather than replaced.
+ *
* @param family family name
* @param qualifier column qualifier
* @param amount amount to increment by
@@ -95,12 +99,39 @@
NavigableMap
+ * For a single instance of Increment, method sums the amount with any
+ * previous calls to incrementColumn for this family and qualifier. Use
+ * {@link #addColumn(byte[], byte[], long)} if you want to replace any
+ * existing amounts set in this instance of Increment.
+ *
+ * @param family family name
+ * @param qualifier column qualifier
+ * @param amount amount to increment by
+ * @return the Increment object
+ */
+ public Increment incrementColumn(byte [] family, byte [] qualifier,
+ long amount) {
+ NavigableMap