set the upper limit of scale factor to 1000

README.md

@@ -16,7 +16,7 @@ Before we start, you could adjust parameters to customize the SSB data set that
 
 We extended [the original SSB-DBGen](https://github.com/electrum/ssb-dbgen) tools to support column cardinality configuration.
 
-**SCALE** is the key scale factor，ranging from 0.01 to 100+. Default value is 0.1.
+**SCALE** is the key scale factor，ranging from 0.01 to 100+. Default value is 0.1. Until now, the max scale factor supported is 1000.
 
 Other properties in `bin/ssb.conf`:
 

bin/run.sh

@@ -46,6 +46,16 @@ do
     shift
 done
 
+scale2int=$scale
+if ! [[ "$scale" =~ ^[0-9]+$ ]]; then
+    scale2int=`echo $scale |awk '{ print int($0)+1}'`
+fi
+
+if [ ${scale2int} -gt 1000 ]; then
+    echo 'Scale factor > 1000 since implementation is incomplete.'
+    exit
+fi
+
 # check for existence of hadoop streaming
 if [ -n "$HADOOP_HOME" ]; then
     # for hadoop 1.0.x