elasticsearch plugin installation is inconsistent

[andrewgdotcom]

There is inconsistency between sirensolutions/siren-join and solutions.siren/siren-join. This is a trap for the unwary!

root@odx:~# /usr/share/elasticsearch/bin/plugin install sirensolutions/siren-join/2.4.4 -> Installing sirensolutions/siren-join/2.4.4... Trying https://download.elastic.co/sirensolutions/siren-join/siren-join-2.4.4.zip ... Trying https://search.maven.org/remotecontent?filepath=sirensolutions/siren-join/2.4.4/siren-join-2.4.4.zip ... Trying https://oss.sonatype.org/service/local/repositories/releases/content/sirensolutions/siren-join/2.4.4/siren-join-2.4.4.zip ... Trying https://github.com/sirensolutions/siren-join/archive/2.4.4.zip ... Downloading .........................................................................................................................................................................DONE Verifying https://github.com/sirensolutions/siren-join/archive/2.4.4.zip checksums if available ... NOTE: Unable to verify checksum for downloaded plugin (unable to find .sha1 or .md5 file to verify) ERROR: Could not find plugin descriptor 'plugin-descriptor.properties' in plugin zip

BUT

root@odx:~# /usr/share/elasticsearch/bin/plugin install solutions.siren/siren-join/2.4.4 -> Installing solutions.siren/siren-join/2.4.4... Trying https://download.elastic.co/solutions.siren/siren-join/siren-join-2.4.4.zip ... Trying https://search.maven.org/remotecontent?filepath=solutions/siren/siren-join/2.4.4/siren-join-2.4.4.zip ... Downloading .........................................DONE Verifying https://search.maven.org/remotecontent?filepath=solutions/siren/siren-join/2.4.4/siren-join-2.4.4.zip checksums if available ... Downloading .DONE Installed siren-join into /usr/share/elasticsearch/plugins/siren-join