Cannot install hadoop-ES : Plugin-descriptor.properties missing in hadoop-ES plugin

[sbone]

i am trying to install the hadoop-ES plugin to elasticsearch as root using:

bin/plugin install file:///home/user/elasticsearch-hadoop-5.1.2

it fails with the following error:
ERROR: Could not find plugin descriptor 'plugin-descriptor.properties' in plugin zip

i have tried both the the extracted archive and with the .zip

does anyone know where the file is?
or how i can create it?

thanks.

current setup:

hadoop 2.6.0-cdh5.6.1
elastic: 2.4.4
elasticsearch-hadoop: 5.1.2

[james.baiera]

elasticsearch-hadoop is not an Elasticsearch plugin. It is a library that is used in tandem with technologies in the Hadoop ecosystem to provide a source from and sink to elasticsearch in those technologies.