Trying reset ES cluster settings

gistfile1.txt

## Request ERROR

curl -XPUT localhost:9200/_cluster/settings?pretty -d '
{
  "persistent" : {},
  "transient" : {}
}'


curl -XPUT localhost:9200/_cluster/settings?pretty -d '
{
  "persistent" : null,
  "transient" : null
}'

curl -XPUT localhost:9200/_cluster/settings?pretty -d '
{
  "persistent" : {
    "cluster.routing.allocation.include._ip" : null,
    "cluster.routing.allocation.exclude._ip" : null
  }
}'


## Parsing error 

curl -XPUT localhost:9200/_cluster/settings?pretty -d '
{
  "persistent" : {
    "cluster.routing.allocation.include._ip" : "",
    "cluster.routing.allocation.exclude._ip" : ""
  }
}'

Any update on this?

Have you find the way to overcome this?