Constant re-syncing of mapping, ES 1.3.1

Hi, on my master node I constantly see in the logs the following messages:

[2014-08-05 12:06:27,763][WARN ][cluster.metadata ] [ark.com.
01.ark74] [ark-profiles-2014-07-09] re-syncing mappings with cluster state
for types [[profiles_v1]]

[2014-08-05 12:06:27,783][WARN ][cluster.metadata ] [ark.com.
01.ark74] [ark-profiles-2014-08-01] re-syncing mappings with cluster state
for types [[profiles_v1]]

[2014-08-05 12:06:28,097][WARN ][cluster.metadata ] [ark.com.
01.ark74] [ark-profiles-2014-07-09] re-syncing mappings with cluster state
for types [[profiles_v1]]

[2014-08-05 12:06:28,118][WARN ][cluster.metadata ] [ark.com.
01.ark74] [ark-profiles-2014-08-01] re-syncing mappings with cluster state
for types [[profiles_v1]]

Any idea why this is happening?

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