首次安装并进入Hbase后，会遇到这种问题：
[root@zhiyong2 /]# hbase shell
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/usdp-srv/srv/udp/2.0.0.0/hdfs/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/usdp-srv/srv/udp/2.0.0.0/hbase/lib/client-facing-thirdparty/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
Hbase Shell
Use "help" to get list of supported commands.
Use "exit" to quit this interactive shell.
For Reference, please visit: http://hbase.apache.org/2.0/book.html#shell
Version 2.1.10, rUnknown, Mon Nov 23 09:56:35 WIB 2020
Took 0.0036 seconds
hbase(main):001:0> list_namespace
NAMESPACE
ERROR: org.apache.hadoop.hbase.PleaseHoldException: Master is initializing
at org.apache.hadoop.hbase.master.HMaster.checkInitialized(HMaster.java:3003)
at org.apache.hadoop.hbase.master.HMaster.getNamespaces(HMaster.java:3299)
at org.apache.hadoop.hbase.master.MasterRpcServices.listNamespaceDescriptors(MasterRpcServices.java:1237)
at org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java)
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413)
at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:133)
at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324)
at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304)
For usage try 'help "list_namespace"'
Took 9.8027 seconds
这种情况肯定是不能一直等的，笔者等了一阵子都没初始化好。。。
解决方式由于是新集群，没啥有用的数据，可以按如下方式清除元数据实现重新初始化。清除元数据前先在USDP的Web UI关闭Hbase的组件。
删除zk的元数据由于Hbase的元数据有一部分是存储在Zookeeper上的，所以先磨刀霍霍：
[root@zhiyong2 /]# zkCli.sh Connecting to localhost:2181 2022-03-03 00:09:47,689 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.13-2d71af4dbe22557fda74f9a9b4309b15a7487f03, built on 06/29/2018 04:05 GMT 2022-03-03 00:09:47,693 [myid:] - INFO [main:Environment@100] - Client environment:host.name=zhiyong2 2022-03-03 00:09:47,693 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_202 2022-03-03 00:09:47,695 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation 2022-03-03 00:09:47,695 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/java/jdk1.8.0_202/jre 2022-03-03 00:09:47,696 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/srv/udp/2.0.0.0/zookeeper/bin/../zookeeper-server/target/classes:/srv/udp/2.0.0.0/zookeeper/bin/../build/classes:/srv/udp/2.0.0.0/zookeeper/bin/../zookeeper-server/target/lib/*.jar:/srv/udp/2.0.0.0/zookeeper/bin/../build/lib/*.jar:/srv/udp/2.0.0.0/zookeeper/bin/../lib/slf4j-log4j12-1.7.25.jar:/srv/udp/2.0.0.0/zookeeper/bin/../lib/slf4j-api-1.7.25.jar:/srv/udp/2.0.0.0/zookeeper/bin/../lib/netty-3.10.6.Final.jar:/srv/udp/2.0.0.0/zookeeper/bin/../lib/log4j-1.2.17.jar:/srv/udp/2.0.0.0/zookeeper/bin/../lib/jline-0.9.94.jar:/srv/udp/2.0.0.0/zookeeper/bin/../lib/audience-annotations-0.5.0.jar:/srv/udp/2.0.0.0/zookeeper/bin/../zookeeper-3.4.13.jar:/srv/udp/2.0.0.0/zookeeper/bin/../zookeeper-server/src/main/resources/lib/*.jar:/srv/udp/2.0.0.0/zookeeper/bin/../conf:.:/usr/java/jdk1.8.0_202/jre/lib/rt.jar:/usr/java/jdk1.8.0_202/lib/dt.jar:/usr/java/jdk1.8.0_202/lib/tools.jar 2022-03-03 00:09:47,696 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib 2022-03-03 00:09:47,696 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp 2022-03-03 00:09:47,696 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=删除HDFS的元数据2022-03-03 00:09:47,696 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux 2022-03-03 00:09:47,696 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64 2022-03-03 00:09:47,697 [myid:] - INFO [main:Environment@100] - Client environment:os.version=3.10.0-957.el7.x86_64 2022-03-03 00:09:47,697 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root 2022-03-03 00:09:47,697 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root 2022-03-03 00:09:47,697 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/ 2022-03-03 00:09:47,698 [myid:] - INFO [main:ZooKeeper@442] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@41906a77 2022-03-03 00:09:47,721 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1029] - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error) Welcome to ZooKeeper! JLine support is enabled 2022-03-03 00:09:47,808 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@879] - Socket connection established to localhost/127.0.0.1:2181, initiating session 2022-03-03 00:09:47,817 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1303] - Session establishment complete on server localhost/127.0.0.1:2181, sessionid = 0x1000009708f000e, negotiated timeout = 30000 WATCHER:: WatchedEvent state:SyncConnected type:None path:null [zk: localhost:2181(CONNECTED) 0] ls / [cluster, brokers, zookeeper, yarn-leader-election, hadoop-ha, admin, isr_change_notification, dolphinscheduler, log_dir_event_notification, controller_epoch, rmstore, consumers, latest_producer_id_block, config, hbase] [zk: localhost:2181(CONNECTED) 1] rmr /hbase [zk: localhost:2181(CONNECTED) 2] [root@zhiyong2 /]# ^C [root@zhiyong2 /]# ^C [root@zhiyong2 /]#
由于Hbase还有一部分数据是存储在HDFS的，故还需要删除Hbase存储在HDFS的元数据。由于USDP带有Ranger，实际上已经有了用户和权限，故不能使用root来删除HDFS的重要数据，必须先切换到hadoop用户。
[root@zhiyong2 /]# hadoop fs -rmr /hbase/data/hbase/meta/* rmr: DEPRECATED: Please use '-rm -r' instead. rmr: Failed to move to trash: hdfs://zhiyong-1/hbase/data/hbase/meta/.tabledesc: Permission denied: user=root, access=WRITE, inode="/hbase/data/hbase/meta":hadoop:supergroup:drwxr-xr-x rmr: Failed to move to trash: hdfs://zhiyong-1/hbase/data/hbase/meta/.tmp: Permission denied: user=root, access=WRITE, inode="/hbase/data/hbase/meta":hadoop:supergroup:drwxr-xr-x rmr: Failed to move to trash: hdfs://zhiyong-1/hbase/data/hbase/meta/1588230740: Permission denied: user=root, access=WRITE, inode="/hbase/data/hbase/meta":hadoop:supergroup:drwxr-xr-x [root@zhiyong2 /]# cd /etc/passwd/ -bash: cd: /etc/passwd/: 不是目录 [root@zhiyong2 /]# cat /etc/passwd root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin nobody:x:99:99:Nobody:/:/sbin/nologin systemd-network:x:192:192:systemd Network Management:/:/sbin/nologin dbus:x:81:81:System message bus:/:/sbin/nologin polkitd:x:999:998:User for polkitd:/:/sbin/nologin libstoragemgmt:x:998:997:daemon account for libstoragemgmt:/var/run/lsm:/sbin/nologin abrt:x:173:173::/etc/abrt:/sbin/nologin rpc:x:32:32:Rpcbind Daemon:/var/lib/rpcbind:/sbin/nologin apache:x:48:48:Apache:/usr/share/httpd:/sbin/nologin sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin postfix:x:89:89::/var/spool/postfix:/sbin/nologin ntp:x:38:38::/etc/ntp:/sbin/nologin chrony:x:997:995::/var/lib/chrony:/sbin/nologin tcpdump:x:72:72::/:/sbin/nologin hadoop:x:1000:1000::/home/hadoop:/bin/bash mysql:x:27:27:MySQL Server:/var/lib/mysql:/bin/false saslauth:x:996:76:Saslauthd user:/run/saslauthd:/sbin/nologin elastic:x:1001:1001::/home/elastic:/bin/bash hue:x:1002:1002::/home/hue:/bin/bash [root@zhiyong2 /]# su - hadoop 上一次登录：四 3月 3 00:24:33 CST 2022 [hadoop@zhiyong2 ~]$ hadoop fs -rmr /hbase/data/hbase/meta/* rmr: DEPRECATED: Please use '-rm -r' instead. 2022-03-03 00:27:31 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/data/hbase/meta/.tabledesc' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/data/hbase/meta/.tabledesc 2022-03-03 00:27:31 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/data/hbase/meta/.tmp' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/data/hbase/meta/.tmp 2022-03-03 00:27:31 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/data/hbase/meta/1588230740' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/data/hbase/meta/1588230740 [hadoop@zhiyong2 ~]$ hadoop fs -rmr /hbase/data/hbase/namespace/* rmr: DEPRECATED: Please use '-rm -r' instead. 2022-03-03 00:27:34 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/data/hbase/namespace/.tabledesc' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/data/hbase/namespace/.tabledesc 2022-03-03 00:27:34 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/data/hbase/namespace/.tmp' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/data/hbase/namespace/.tmp 2022-03-03 00:27:34 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/data/hbase/namespace/98fb8a0448305b2f9af4f9a72495b6df' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/data/hbase/namespace/98fb8a0448305b2f9af4f9a72495b6df [hadoop@zhiyong2 ~]$ hadoop fs -rmr /hbase/MasterProcWALs/* rmr: DEPRECATED: Please use '-rm -r' instead. 2022-03-03 00:27:38 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/MasterProcWALs/pv2-00000000000000000009.log' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/MasterProcWALs/pv2-00000000000000000009.log 2022-03-03 00:27:38 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/MasterProcWALs/pv2-00000000000000000010.log' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/MasterProcWALs/pv2-00000000000000000010.log 2022-03-03 00:27:38 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/MasterProcWALs/pv2-00000000000000000011.log' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/MasterProcWALs/pv2-00000000000000000011.log 2022-03-03 00:27:38 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/MasterProcWALs/pv2-00000000000000000012.log' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/MasterProcWALs/pv2-00000000000000000012.log 2022-03-03 00:27:38 INFO fs.TrashPolicyDefault: Moved: 'hdfs://zhiyong-1/hbase/MasterProcWALs/pv2-00000000000000000013.log' to trash at: hdfs://zhiyong-1/user/hadoop/.Trash/Current/hbase/MasterProcWALs/pv2-00000000000000000013.log [hadoop@zhiyong2 ~]$ exit 登出 [root@zhiyong2 /]#重启Hbase
重启后即可使用：
[hadoop@zhiyong2 ~]$ hbase shell SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/opt/usdp-srv/srv/udp/2.0.0.0/hdfs/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/opt/usdp-srv/srv/udp/2.0.0.0/hbase/lib/client-facing-thirdparty/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory] Hbase Shell Use "help" to get list of supported commands. Use "exit" to quit this interactive shell. For Reference, please visit: http://hbase.apache.org/2.0/book.html#shell Version 2.1.10, rUnknown, Mon Nov 23 09:56:35 WIB 2020 Took 0.0045 seconds hbase(main):001:0> list_namespace list_namespace list_namespace_tables hbase(main):001:0> list_namespace NAMESPACE default hbase 2 row(s) Took 0.5645 seconds hbase(main):002:0> exit [hadoop@zhiyong2 ~]$ exit 登出 [root@zhiyong2 /]# hbase shell SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/opt/usdp-srv/srv/udp/2.0.0.0/hdfs/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/opt/usdp-srv/srv/udp/2.0.0.0/hbase/lib/client-facing-thirdparty/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory] Hbase Shell Use "help" to get list of supported commands. Use "exit" to quit this interactive shell. For Reference, please visit: http://hbase.apache.org/2.0/book.html#shell Version 2.1.10, rUnknown, Mon Nov 23 09:56:35 WIB 2020 Took 0.0035 seconds hbase(main):001:0> list_namespace list_namespace list_namespace_tables hbase(main):001:0> list_namespace NAMESPACE default hbase 2 row(s) Took 0.6270 seconds hbase(main):002:0> exit [root@zhiyong2 /]#
可以看到此时不管是hadoop超级管理员用户【拥有对HDFS和Hbase组件的最高权限】还是普通的root用户【root对HDFS和Hbase的权限不高】，都可以正常操作Hbase。
