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elasticsearch client must be explicitly installed as it's an optional backend requirement. this patch installs the client when installing elasticsearch Change-Id: I534cf0c78ab1fe7d309ef5f808bbe7b5422b403e
elasticsearch client must be explicitly installed as it's an optional backend requirement. this patch installs the client when installing elasticsearch Change-Id: I534cf0c78ab1fe7d309ef5f808bbe7b5422b403e