If Ambari indicates that your indexing is stopped after you have started your indexing, this might be a problem with the Python requests module.
Check the Storm UI to ensure that indexing has started for your topologies. If the Storm UI indicates that the indexing topology has started, you might need to install the latest version of python-requests. Version 2.6.1 of python-requests fixes a bug introduced in version 2.5.2 that causes the system modules to break. See for more information.