fix: add log message when host-to-domain graph conversion has finished

- add log message that files are written (sorted and compressed)
  after Java tool HostToDomainGraph is finished
- log if the background processes performing sorting and compression
  have been finished

Author: sebastian-nagel

src/script/host2domaingraph.sh

@@ -140,4 +140,8 @@ fi
                     <(zcat $_EDGES) \
                     >(sort $SORTOPTS -t$'\t' -k1,1n -k2,2n -s -u | gzip >"$OUTPUTDIR"/edges.txt.gz)
 
+echo "Waiting for data to be written to disk..."
 wait # for subshells to finish
+
+echo "Finished aggregation of host-level graph on the domain level:"
+ls -l "$OUTPUTDIR"/{vertices,edges}.txt.gz