This seems to fix it.....wordcount example exception that I think should not occur

Well, by edting src/java/org/apache/cassandra/hadoop/ColumnFamilyRecordReader.java in version 1.0.2 cassandra src just before the totalRead++; KeySlice ks = rows.get(i++); SortedMap map = new TreeMap(comparator); I added the code if(i >= rows.size

wordcount example exception that I think should not occur

There are 4 jobs submitted by the wordcount cassandra example and the first one fails and the other 3 all pass and work with results. The first job I noticed is looking for column name text0 due to i being 0 in the loop. The exception is not going through the wordcount code at all though, but thi