知识大全 unix中Hbase重启之后就无法启动的原因及解决办法

Posted 2022-07-21 知

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Hbase重启之后就无法启动的现象当我们使用Hbase 的时候遇到了个奇怪的问题

我们使用了数台机器构建了一个集群并且按照Hadoop/Hbase的"Getting Started"安装配置了Hadoop和Hbase 之后能够正常启动Hadoop和Hbase 并且创建table和插入数据

不过当我们访问Master的页面时我们发现了第一个问题在regionserver区域出现了个的regionserver 但是我们并没有在conf/regionservers将master设置为regionserver

代码如下复制代码

Region ServersAddress Start Code Load : requests= regions= usedHeap= maxHeap= : requests= regions= usedHeap= maxHeap= WAMDM: requests= regions= usedHeap= maxHeap= WAMDM: requests= regions= usedHeap= maxHeap= WAMDM: requests= regions= usedHeap= maxHeap= WAMDM: requests= regions= usedHeap= maxHeap= ……

但是虽然出现了以上的怪现象但是hbase似乎仍然能够正常工作只是当我们打算重启hbase的时候我们发现了第二个问题我们尝试运行bin/stop hbase sh 之后又运行启动hbase的脚本 bin/ start hbase sh 这一次当我们访问master页面的时候出现了如下的错误

代码如下复制代码

HTTP ERROR: Trying to contact region server null for region row " but failed after attempts Exceptions: apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts=

RequestURI=/master jsp

Caused by: apache hadoop hbase client RetriesExhaustedException: Trying to contact region server null for region row " but failed after attempts Exceptions: apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts=

at apache hadoop hbase client HConnectionManager$TableServers getRegionServerWithRetries(HConnectionManager java: ) at apache hadoop hbase clientaScan(MetaScanner java: ) at apache hadoop hbase clientaScan(MetaScanner java: ) at apache hadoop hbase client HConnectionManager$TableServers listTables(HConnectionManager java: ) at apache hadoop hbase client HBaseAdmin listTables(HBaseAdmin java: ) at apache hadoop hbase generated master master_jsp _jspService(master_jsp java: ) at apache jasper runtime HttpJspBase service(HttpJspBase java: ) at javax servlet (HttpServlet java: ) at mortbay jetty servlet ServletHolder handle(ServletHolder java: ) at mortbay jetty servlet ServletHandler handle(ServletHandler java: ) at mortbay jetty security SecurityHandler handle(SecurityHandler java: ) at mortbay jetty servlet SessionHandler handle(SessionHandler java: ) at mortbay jetty handler ContextHandler handle(ContextHandler java: ) at mortbay jetty webapp WebAppContext handle(WebAppContext java: ) at mortbay jetty handler ContextHandlerCollection handle(ContextHandlerCollection java: ) at mortbay jetty handler HandlerWrapper handle(HandlerWrapper java: ) at mortbay jetty Server handle(Server java: ) at mortbay jetty HttpConnection handleRequest(HttpConnection java: ) at mortbay jetty HttpConnection$RequestHandler headerComplete(HttpConnection java: ) at mortbay jetty HttpParser parseNext(HttpParser java: ) at mortbay jetty HttpParser parseAvailable(HttpParser java: ) at mortbay jetty HttpConnection handle(HttpConnection java: ) at mortbay io nio SelectChannelEndPoint run(SelectChannelEndPoint java: ) at mortbay thread QueuedThreadPool$PoolThread run(QueuedThreadPool java: )

同时在master的log中出现了如下的错误 : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: locateRegionInMeta attempt of failed; retrying after sleep of apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= at apache hadoop hbase ipc HBaseRPC waitForProxy(HBaseRPC java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRootRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegionInMeta(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getRegionLocation(HConnectionManager java: ) at apache hadoop hbase client ServerCallable instantiateServer(ServerCallable java: ) at apache hadoop hbase client ScannerCallable instantiateServer(ScannerCallable java: ) at apache hadoop hbase client HConnectionManager$TableServers getRegionServerWithRetries(HConnectionManager java: ) at apache hadoop hbase clientaScan(MetaScanner java: ) at apache hadoop hbase clientaScan(MetaScanner java: ) at apache hadoop hbase client HConnectionManager$TableServers listTables(HConnectionManager java: ) at apache hadoop hbase client HBaseAdmin listTables(HBaseAdmin java: ) at apache hadoop hbase generated master master_jsp _jspService(master_jsp java: ) at apache jasper runtime HttpJspBase service(HttpJspBase java: ) at javax servlet (HttpServlet java: ) at mortbay jetty servlet ServletHolder handle(ServletHolder java: ) at mortbay jetty servlet ServletHandler handle(ServletHandler java: ) at mortbay jetty security SecurityHandler handle(SecurityHandler java: ) at mortbay jetty servlet SessionHandler handle(SessionHandler java: ) at mortbay jetty handler ContextHandler handle(ContextHandler java: ) at mortbay jetty webapp WebAppContext handle(WebAppContext java: ) at mortbay jetty handler ContextHandlerCollection handle(ContextHandlerCollection java: ) at mortbay jetty handler HandlerWrapper handle(HandlerWrapper java: ) at mortbay jetty Server handle(Server java: ) at mortbay jetty HttpConnection handleRequest(HttpConnection java: ) at mortbay jetty HttpConnection$RequestHandler headerComplete(HttpConnection java: ) at mortbay jetty HttpParser parseNext(HttpParser java: ) at mortbay jetty HttpParser parseAvailable(HttpParser java: ) at mortbay jetty HttpConnection handle(HttpConnection java: ) at mortbay io nio SelectChannelEndPoint run(SelectChannelEndPoint java: ) at mortbay thread QueuedThreadPool$PoolThread run(QueuedThreadPool java: ) : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: locateRegionInMeta attempt of failed; retrying after sleep of apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= at apache hadoop hbase ipc HBaseRPC waitForProxy(HBaseRPC java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRootRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegionInMeta(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers relocateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getRegionLocation(HConnectionManager java: ) at apache hadoop hbase client ServerCallable instantiateServer(ServerCallable java: ) at apache hadoop hbase client ScannerCallable instantiateServer(ScannerCallable java: ) at apache hadoop hbase client HConnectionManager$TableServers getRegionServerWithRetries(HConnectionManager java: ) at apache hadoop hbase clientaScan(MetaScanner java: ) at apache hadoop hbase clientaScan(MetaScanner java: ) at apache hadoop hbase client HConnectionManager$TableServers listTables(HConnectionManager java: ) at apache hadoop hbase client HBaseAdmin listTables(HBaseAdmin java: ) at apache hadoop hbase generated master master_jsp _jspService(master_jsp java: ) at apache jasper runtime HttpJspBase service(HttpJspBase java: ) at javax servlet (HttpServlet java: ) at mortbay jetty servlet ServletHolder handle(ServletHolder java: ) at mortbay jetty servlet ServletHandler handle(ServletHandler java: ) at mortbay jetty security SecurityHandler handle(SecurityHandler java: ) at mortbay jetty servlet SessionHandler handle(SessionHandler java: ) at mortbay jetty handler ContextHandler handle(ContextHandler java: ) at mortbay jetty webapp WebAppContext handle(WebAppContext java: ) at mortbay jetty handler ContextHandlerCollection handle(ContextHandlerCollection java: ) at mortbay jetty handler HandlerWrapper handle(HandlerWrapper java: ) at mortbay jetty Server handle(Server java: ) at mortbay jetty HttpConnection handleRequest(HttpConnection java: ) at mortbay jetty HttpConnection$RequestHandler headerComplete(HttpConnection java: ) at mortbay jetty HttpParser parseNext(HttpParser java: ) at mortbay jetty HttpParser parseAvailable(HttpParser java: ) at mortbay jetty HttpConnection handle(HttpConnection java: ) at mortbay io nio SelectChannelEndPoint run(SelectChannelEndPoint java: ) at mortbay thread QueuedThreadPool$PoolThread run(QueuedThreadPool java: ) : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: locateRegionInMeta attempt of failed; retrying after sleep of apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= at apache hadoop hbase ipc HBaseRPC waitForProxy(HBaseRPC java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRootRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegionInMeta(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers locateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers relocateRegion(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getRegionLocation(HConnectionManager java: ) at apache hadoop hbase client ServerCallable instantiateServer(ServerCallable java: ) at apache hadoop hbase client ScannerCallable instantiateServer(ScannerCallable java: ) at apache hadoop hbase client HConnectionManager$TableServers getRegionServerWithRetries(HConnectionManager java: ) at apache hadoop hbase clientaScan(MetaScanner java: ) at apache hadoop hbase clientaScan(MetaScanner java: ) at apache hadoop hbase client HConnectionManager$TableServers listTables(HConnectionManager java: ) at apache hadoop hbase client HBaseAdmin listTables(HBaseAdmin java: ) at apache hadoop hbase generated master master_jsp _jspService(master_jsp java: ) at apache jasper runtime HttpJspBase service(HttpJspBase java: ) at javax servlet (HttpServlet java: ) at mortbay jetty servlet ServletHolder handle(ServletHolder java: ) at mortbay jetty servlet ServletHandler handle(ServletHandler java: ) at mortbay jetty security SecurityHandler handle(SecurityHandler java: ) at mortbay jetty servlet SessionHandler handle(SessionHandler java: ) at mortbay jetty handler ContextHandler handle(ContextHandler java: ) at mortbay jetty webapp WebAppContext handle(WebAppContext java: ) at mortbay jetty handler ContextHandlerCollection handle(ContextHandlerCollection java: ) at mortbay jetty handler HandlerWrapper handle(HandlerWrapper java: ) at mortbay jetty Server handle(Server java: ) at mortbay jetty HttpConnection handleRequest(HttpConnection java: ) at mortbay jetty HttpConnection$RequestHandler headerComplete(HttpConnection java: ) at mortbay jetty HttpParser parseNext(HttpParser java: ) at mortbay jetty HttpParser parseAvailable(HttpParser java: ) at mortbay jetty HttpConnection handle(HttpConnection java: ) at mortbay io nio SelectChannelEndPoint run(SelectChannelEndPoint java: ) at mortbay thread QueuedThreadPool$PoolThread run(QueuedThreadPool java: ) : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Root region location changed Sleeping : : INFO apache hadoop hbase master ServerManager: region servers dead average load : : DEBUG apache hadoop hbase client HConnectionManager$TableServers: Wake Retry finding root region : : DEBUG apache hadoop hbase zookeeper ZooKeeperWrapper: Read ZNode /hbase/root region server got : : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : INFO apache hadoop hbase master BaseScanner: RegionManager rootScanner scanning meta region server: : regionname: ROOT startKey: <> : : INFO apache hadoop hbase master BaseScanner: All META region(s) scanned : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : WARN apache hadoop hbase master BaseScanner: Scan ROOT region apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= at apache hadoop hbase ipc HBaseRPC waitForProxy(HBaseRPC java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase master BaseScanner scanRegion(BaseScanner java: ) at apache hadoop hbase master RootScanner scanRoot(RootScanner java: ) at apache hadoop hbase master RootScanner maintenanceScan(RootScanner java: ) at apache hadoop hbase master BaseScanner chore(BaseScanner java: ) at apache hadoop hbase Chore run(Chore java: ) : : INFO apache hadoop hbase master ServerManager: region servers dead average load : : INFO apache hadoop hbase master BaseScanner: RegionManager rootScanner scanning meta region server: : regionname: ROOT startKey: <> : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : WARN apache hadoop hbase master BaseScanner: Scan ROOT region apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= at apache hadoop hbase ipc HBaseRPC waitForProxy(HBaseRPC java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase master BaseScanner scanRegion(BaseScanner java: ) at apache hadoop hbase master RootScanner scanRoot(RootScanner java: ) at apache hadoop hbase master RootScanner maintenanceScan(RootScanner java: ) at apache hadoop hbase master BaseScanner chore(BaseScanner java: ) at apache hadoop hbase Chore run(Chore java: ) : : INFO apache hadoop hbase master BaseScanner: All META region(s) scanned : : INFO apache hadoop hbase master ServerManager: region servers dead average load : : INFO apache hadoop hbase master BaseScanner: RegionManager rootScanner scanning meta region server: : regionname: ROOT startKey: <> : : INFO apache hadoop ipc HbaseRPC: Server at / : could not be reached after tries giving up : : WARN apache hadoop hbase master BaseScanner: Scan ROOT region apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= at apache hadoop hbase ipc HBaseRPC waitForProxy(HBaseRPC java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase master BaseScanner scanRegion(BaseScanner java: ) at apache hadoop hbase master RootScanner scanRoot(RootScanner java: ) at apache hadoop hbase master RootScanner maintenanceScan(RootScanner java: ) at apache hadoop hbase master BaseScanner chore(BaseScanner java: ) at apache hadoop hbase Chore run(Chore java: )

此时 Hbase能够进入shell 但是无法执行任何操作于是再次试图关闭hbase的时候却发现无法停止master 那个"stop master"后面的“ ”出现了许许多多仍然无法停止master节点于是我们不得不强制kill掉master Hbase就这样挂掉了

Hbase重启之后就无法启动的原因分析 经过多方排查最后我在尝试使用netstat an查看端口占用情况的时候发现在WAMDM 节点上 regionserver占用的端口占用为 : 而在WAMDM 节点上 regionserver占用的端口占用为 : 我感觉颇为蹊跷之后便检查/etc/hosts文件果然发现在WAMDM 和WAMDM 下的hosts文件不同在WAMDM 的hosts文件中的内容为

代码如下复制代码

WAMDM localhost localdomain localhost WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM

大家注意第一行我们在使用配置Hadoop/Hbase的时候常常使用主机名来代替IP使用但是在WAMDM 的机器上 WAMDM 被映射为于是master和regionserver之间的通信就出错这也就是为什么我们经常在日志中以及错误提示中看到如下信息

代码如下复制代码

Server at / : could not be reached after tries giving up

apache hadoop hbase client RetriesExhaustedException: Failed setting up proxy to / : after attempts= at apache hadoop hbase ipc HBaseRPC waitForProxy(HBaseRPC java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase client HConnectionManager$TableServers getHRegionConnection(HConnectionManager java: ) at apache hadoop hbase master BaseScanner scanRegion(BaseScanner java: ) at apache hadoop hbase master RootScanner scanRoot(RootScanner java: ) at apache hadoop hbase master RootScanner maintenanceScan(RootScanner java: ) at apache hadoop hbase master BaseScanner chore(BaseScanner java: ) at apache hadoop hbase Chore run(Chore java: )

Hbase重启之后就无法启动的解决办法于是我将所有机器的/etc/hosts文件都改为了如下配置

代码如下复制代码

localhost WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM WAMDM # The following lines are desirable for IPv capable hosts:: localhost ip localhost ip loopbackfe :: ip localnetff :: ip mcastprefixff :: ip allnodesff :: ip allroutersff :: ip allhosts

同时为了保险起见我在stop hbase sh中也加入停止regionservers的命令（虽然在网上查不到停止regionservers的必要性以及这个脚本存在bug的证据但是这样改经过测试是没有问题的）

代码如下复制代码

"$bin"/hbase daemons sh config "$HBASE_CONF_DIR" hosts "$HBASE_REGIONSERVERS" stop regionserver

这个命令需要加在stop master之前至于不加入这个停止regionservers的命令是否可行在未来我会进一步测试

cha138/Article/program/Java/gj/201405/30822