Github user mmiklavc commented on the issue:
https://github.com/apache/metron/pull/1242
Note, I force pushed this branch with revised history after the revert done
by @nickwallen on https://github.com/apache/metron/pull/1218. This is
effectively a merge with the latest master minus 1218 changes while we resolve
the latent issues with ES and doc ids and guids.---
