Low disk watermark - Does it ES stop indexing new data?

When the disk usage reaches the threshold, will elasticsearch stop processing the incoming indexing requests?

Running ES 2.3.2 and its a single node ES cluster?

[2017-06-01 13:24:53,368][INFO ][cluster.routing.allocation.decider] [Kismet] low disk watermark [85%] exceeded on [pd1E5-TmT6mhoTkkRay0_g][Kismet][C:\tt\tt\elasticsearch-2.3.2\data\WF_PROD1\nodes\0] free: 35.4gb[14.7%], replicas will not be assigned to this node
[2017-06-01 13:25:23,409][INFO ][cluster.routing.allocation.decider] [Kismet] rerouting shards: [one or more nodes has gone under the high or low watermark]

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It will continue to index data but will refuse to allocate replicas on that node.

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