elasticsearch服务器总是自动关闭

[2017-06-29T11:22:49,258][WARN ][o.e.t.n.Netty4Transport  ] [travelingsync_node_1] exception caught on transport layer [[id: 0x7075605b, L:/127.0.0.1:9300 - R:/127.0.0.1:62497]], closing connection

java.io.IOException: 杩滅▼涓绘満寮鸿揩鍏抽棴浜嗕竴涓幇鏈夌殑杩炴帴銆?        at sun.nio.ch.SocketDispatcher.read0(Native Method) ~[?:?]

        at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43) ~[?:?]

        at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:?]

        at sun.nio.ch.IOUtil.read(IOUtil.java:197) ~[?:?]

        at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) ~[?:?]

        at io.netty.buffer.PooledHeapByteBuf.setBytes(PooledHeapByteBuf.java:261) ~[netty-buffer-4.1.9.Final.jar:4.1.9.Final]

        at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) ~[netty-buffer-4.1.9.Final.jar:4.1.9.Final]

        at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:372) ~[netty-transport-4.1.9.Final.jar:4.1.9.Final]

        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:123) [netty-transport-4.1.9.Final.jar:4.1.9.Final]

        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:624) [netty-transport-4.1.9.Final.jar:4.1.9.Final]

        at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:524) [netty-transport-4.1.9.Final.jar:4.1.9.Final]

        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:478) [netty-transport-4.1.9.Final.jar:4.1.9.Final]

        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:438) [netty-transport-4.1.9.Final.jar:4.1.9.Final]

        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-common-4.1.9.Final.jar:4.1.9.Final]

        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]

在windows下安装elasticsearch做测试。偶尔运行elasticsearch一段时间，服务器就给自动关闭了。但是在我的测试服务器上（linux）运行快一个月了都没什么事。贴出来错误。想问一下是什么原因导致的我的elasticsearch自动关闭了呢