It seems to be stuck when initializing.
I have no idea about why it happens when initializing.
What does elasticsearch do after the system distributes the heaps to elasticsearch?
Please check the text log below.
2018-12-26 13:42:38 Commons Daemon procrun stdout initialized
[2018-12-26T13:42:47,578][INFO ][o.e.n.Node ] [node-1] initializing ...
[2018-12-26T13:42:48,218][INFO ][o.e.e.NodeEnvironment ] [node-1] using [1] data paths, mounts [[(E:)]], net usable_space [244.4gb], net total_space [499.9gb], spins? [unknown], types [NTFS]
[2018-12-26T13:42:48,218][INFO ][o.e.e.NodeEnvironment ] [node-1] heap size [7.9gb], compressed ordinary object pointers [true]
2018-12-26 13:50:45 Commons Daemon procrun stdout initialized
[2018-12-26T13:50:48,117][INFO ][o.e.n.Node ] [node-1] initializing ...
[2018-12-26T13:50:48,226][INFO ][o.e.e.NodeEnvironment ] [node-1] using [1] data paths, mounts [[(E:)]], net usable_space [244.4gb], net total_space [499.9gb], spins? [unknown], types [NTFS]
[2018-12-26T13:50:48,226][INFO ][o.e.e.NodeEnvironment ] [node-1] heap size [7.9gb], compressed ordinary object pointers [true]
[2018-12-26T13:57:45,386][INFO ][o.e.n.Node ] [node-1] node name [node-1], node ID [z6ItgsQHTZe1gYx6sV-4ag]
[2018-12-26T13:57:45,386][INFO ][o.e.n.Node ] [node-1] version[5.6.4], pid[3724], build[8bbedf5/2017-10-31T18:55:38.105Z], OS[Windows Server 2008 R2/6.1/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_172/25.172-b11]
[2018-12-26T13:57:45,386][INFO ][o.e.n.Node ] [node-1] JVM arguments [-Xms8g, -Xmx8g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -Djdk.io.permissionsUseCanonicalPath=true, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Dlog4j.skipJansi=true, -XX:+HeapDumpOnOutOfMemoryError, -Delasticsearch, -Des.path.home=D:\elasticsearch-5.6.4, -Des.default.path.logs=D:\elasticsearch-5.6.4\logs, -Des.default.path.data=D:\elasticsearch-5.6.4\data, -Des.default.path.conf=D:\elasticsearch-5.6.4\config, exit, -Xms8192m, -Xmx8192m, -Xss1024k]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [aggs-matrix-stats]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [ingest-common]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [lang-expression]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [lang-groovy]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [lang-mustache]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [lang-painless]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [parent-join]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [percolator]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [reindex]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [transport-netty3]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] loaded module [transport-netty4]
[2018-12-26T13:57:47,815][INFO ][o.e.p.PluginsService ] [node-1] no plugins loaded
[2018-12-26T13:57:52,941][INFO ][o.e.d.DiscoveryModule ] [node-1] using discovery type [zen]
[2018-12-26T13:59:00,884][INFO ][o.e.n.Node ] [node-1] initialized
[2018-12-26T13:59:00,884][INFO ][o.e.n.Node ] [node-1] starting ...
[2018-12-26T13:59:01,695][INFO ][o.e.t.TransportService ] [node-1] publish_address {10.111.12.100:9300}, bound_addresses {[::]:9300}
[2018-12-26T13:59:01,727][INFO ][o.e.b.BootstrapChecks ] [node-1] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
[2018-12-26T13:59:04,832][INFO ][o.e.c.s.ClusterService ] [node-1] new_master {node-1}{z6ItgsQHTZe1gYx6sV-4ag}{zthiQis5T9e5nytUQO2bkg}{10.111.12.100}{10.111.12.100:9300}, reason: zen-disco-elected-as-master ([0] nodes joined)
[2018-12-26T13:59:04,926][INFO ][o.e.h.n.Netty4HttpServerTransport] [node-1] publish_address {10.111.12.100:9200}, bound_addresses {[::]:9200}
[2018-12-26T13:59:04,926][INFO ][o.e.n.Node ] [node-1] started