+namespace ECUtil {
+std::ostream& operator<<(std::ostream& out, const HashInfo& hi)
+{
+ ostringstream hashes;
+ for (auto hash: hi.cumulative_shard_hashes)
+ hashes << " " << hex << hash;
+ return out << "tcs=" << hi.total_chunk_size << hashes.str();
+}
+}
+