[accumulo] README feedback from @busbey

* Clarify supported Accumulo versions for table setup instructions
* Use long-form arg names for non-obvious shell commands

accumulo/README.md

@@ -41,7 +41,8 @@ Git clone YCSB and compile:
 By default, YCSB uses a table with the name "usertable". Users must create this table before loading
 data into Accumulo. For maximum Accumulo performance, the Accumulo table must be pre-split. A simple
 Ruby script, based on the HBase README, can generate adequate split-point. 10's of Tablets per
-TabletServer is a good starting point.
+TabletServer is a good starting point. Unless otherwise specified, the following commands should run
+on any version of Accumulo.
 
     $ echo 'num_splits = 20; puts (1..num_splits).map {|i| "user#{1000+i*(9999-1000)/num_splits}"}' | ruby > /tmp/splits.txt
     $ accumulo shell -u <user> -p <password> -e "createtable usertable"
@@ -56,16 +57,19 @@ is a faster and similarly-efficient option. The mutation queue property controls
 that Accumulo will buffer in memory before performing a flush; this property should be set relative
 to the amount of JVM heap the TabletServers are given.
 
+Please note that the `table.durability` and `tserver.total.mutation.queue.max` properties only
+exists for >=Accumulo-1.7. There are no concise replacements for these properties in earlier versions.
+
     accumulo> config -s table.durability=flush
     accumulo> config -s tserver.total.mutation.queue.max=256M
     accumulo> config -t usertable -s table.file.compress.type=snappy
 
 On repeated data loads, the following commands may be helpful to re-set the state of the table quickly.
 
-    accumulo> createtable tmp -cs usertable -cc usertable
-    accumulo> deletetable -f usertable
+    accumulo> createtable tmp --copy-splits usertable --copy-config usertable
+    accumulo> deletetable --force usertable
     accumulo> renametable tmp usertable
-    accumulo> compact -w -t accumulo.metadata
+    accumulo> compact --wait -t accumulo.metadata
 
 ### 4. Load Data and Run Tests