Dangling index warning in elasticsearch

I have deleted a few indices from Elasticsearch and I am seeing dangling index warning in my elasticsearch logs

[2017-04-16T07:12:38,760][WARN ][o.e.g.DanglingIndicesState] [coordinate-node] [[trial-2017.03.29/jgEtpX6lROC0wwOgW-w0Vw]] can not be imported as a dangling index, as an index with the same name and UUID exist in the index tombstones. This situation is likely caused by copying over the data directory for an index that was previously deleted.

Is that likely to cause any problem?
If yes, how can i get rid of this warning.

P.S. I am using elasticsearch version 5.2.2.
I am having 3 data nodes and 1 coordinate node with discovery.zen.minimum_master_nodes: 2

No it won't, it'll take up a bit of disk space but that's about it.

I have deleted logs of size in about GBs. If thats gonna occupy lot of disk space, is there any way to free up that disk space?

I generally use below to delete (via sense plugin for google chrome)

DELETE /trial-2017.03.29

which i think is equivalent to curl -X DELETE http://"host-name":9200/trial-2017.03.29

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Yep, that's correct.

To clean it up is a bit of a hassle unfortunately. Is this warning on your coordinating node?

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