DecoratedKey key1 = Util.dk("key1");
DecoratedKey key2 = Util.dk("key2");
// flush, remember the current sstable and then resurrect one column
// for first key. Then submit minor compaction on remembered sstables.
cfs.forceBlockingFlush();
Collection<SSTableReader> sstablesIncomplete = cfs.getSSTables();
rm = new RowMutation(TABLE2, key1.key);
rm.add(new QueryPath(cfName, null, ByteBufferUtil.bytes(String.valueOf(5))), ByteBufferUtil.EMPTY_BYTE_BUFFER, 2);
rm.apply();
cfs.forceBlockingFlush();