我看到很多错误如下：
"[2015-03-29 14:58:25,485][WARN ][cluster.routing.allocation.decider] [Tess-One] high disk watermark [10%] exceeded on [jhQ1qG09T_WtMeAgDj1RbQ][Tess-One] free: 3.7gb[3.1%], shards will be relocated away from this node"
这是什么意思？我在哪里可以获得更多相关信息？