public Set<Path> getStoreFilesBeingWritten() {
    return storeFileWriterCreationTrackers.stream().flatMap(t -> t.get().stream())
      .collect(Collectors.toSet());
  }
Return the storefiles which are currently being written to. Mainly used by
{@link BrokenStoreFileCleaner} to prevent deleting the these files as they are not present in
SFT yet.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java