hbaseshell命令
进入hbase shell console
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[hadoop@mylab2 hbase]$ ./bin/hbase shell 2016-09-18 15:01:36,773 WARN [main] util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/usr/local/hbase/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.10.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; enter 'help' for list of supported commands. Type "exit " to leave the HBase Shell Version 1.2.1, r8d8a7107dc4ccbf36a92f64675dc60392f85c015, Wed Mar 30 11:19:21 CDT 2016 hbase(main):001:0>
查询服务器状态
hbase(main):007:0> status 1 active master, 0 backup masters, 2 servers, 0 dead, 1.5000 average load
查看hbase版本
hbase(main):008:0> version 1.2.1, r8d8a7107dc4ccbf36a92f64675dc60392f85c015, Wed Mar 30 11:19:21 CDT 2016
命令帮助
hbase(main):002:0> help get
ERROR: wrong number of arguments (0 for 2)
Here is some help for this command:
Get row or cell contents; pass table name, row, and optionally
a dictionary of column(s), timestamp, timerange and versions. Examples:
hbase> get 'ns1:t1', 'r1'
hbase> get 't1', 'r1'
hbase> get 't1', 'r1', {TIMERANGE => [ts1, ts2]}
hbase> get 't1', 'r1', {COLUMN => 'c1'}
hbase> get 't1', 'r1', {COLUMN => ['c1', 'c2', 'c3']}
hbase> get 't1', 'r1', {COLUMN => 'c1', TIMESTAMP => ts1}
hbase> get 't1', 'r1', {COLUMN => 'c1', TIMERANGE => [ts1, ts2], VERSIONS => 4}
hbase> get 't1', 'r1', {COLUMN => 'c1', TIMESTAMP => ts1, VERSIONS => 4}
hbase> get 't1', 'r1', {FILTER => "ValueFilter(=, 'binary:abc')"}
hbase> get 't1', 'r1', 'c1'
hbase> get 't1', 'r1', 'c1', 'c2'
hbase> get 't1', 'r1', ['c1', 'c2']
hbase> get 't1', 'r1', {COLUMN => 'c1', ATTRIBUTES => {'mykey'=>'myvalue'}}
hbase> get 't1', 'r1', {COLUMN => 'c1', AUTHORIZATIONS => ['PRIVATE','SECRET']}
hbase> get 't1', 'r1', {CONSISTENCY => 'TIMELINE'}
hbase> get 't1', 'r1', {CONSISTENCY => 'TIMELINE', REGION_REPLICA_ID => 1}
Besides the default 'toStringBinary' format, 'get' also supports custom formatting by
column. A user can define a FORMATTER by adding it to the column name in the get
specification. The FORMATTER can be stipulated:
1. either as a org.apache.hadoop.hbase.util.Bytes method name (e.g, toInt, toString)
2. or as a custom class followed by method name: e.g. 'c(MyFormatterClass).format'.
Example formatting cf:qualifier1 and cf:qualifier2 both as Integers:
hbase> get 't1', 'r1' {COLUMN => ['cf:qualifier1:toInt',
'cf:qualifier2:c(org.apache.hadoop.hbase.util.Bytes).toInt'] }
Note that you can specify a FORMATTER by column only (cf:qualifier). You cannot specify
a FORMATTER for all columns of a column family.
The same commands also can be run on a reference to a table (obtained via get_table or
create_table). Suppose you had a reference t to table 't1', the corresponding commands
would be:
hbase> t.get 'r1'
hbase> t.get 'r1', {TIMERANGE => [ts1, ts2]}
hbase> t.get 'r1', {COLUMN => 'c1'}
hbase> t.get 'r1', {COLUMN => ['c1', 'c2', 'c3']}
hbase> t.get 'r1', {COLUMN => 'c1', TIMESTAMP => ts1}
hbase> t.get 'r1', {COLUMN => 'c1', TIMERANGE => [ts1, ts2], VERSIONS => 4}
hbase> t.get 'r1', {COLUMN => 'c1', TIMESTAMP => ts1, VERSIONS => 4}
hbase> t.get 'r1', {FILTER => "ValueFilter(=, 'binary:abc')"}
hbase> t.get 'r1', 'c1'
hbase> t.get 'r1', 'c1', 'c2'
hbase> t.get 'r1', ['c1', 'c2']
hbase> t.get 'r1', {CONSISTENCY => 'TIMELINE'}
hbase> t.get 'r1', {CONSISTENCY => 'TIMELINE', REGION_REPLICA_ID => 1}
HBase Shell, version 1.2.1, r8d8a7107dc4ccbf36a92f64675dc60392f85c015, Wed Mar 30 11:19:21 CDT 2016
Type 'help "COMMAND"', (e.g. 'help "get"' -- the quotes are necessary) for help on a specific command.
Commands are grouped. Type 'help "COMMAND_GROUP"', (e.g. 'help "general"') for help on a command group.
COMMAND GROUPS:
Group name: general
Commands: status, table_help, version, whoami
Group name: ddl
Commands: alter, alter_async, alter_status, create, describe, disable, disable_all, drop, drop_all, enable, enable_all, exists, get_table, is_disabled, is_enabled, list, locate_region, show_filters
Group name: namespace
Commands: alter_namespace, create_namespace, describe_namespace, drop_namespace, list_namespace, list_namespace_tables
Group name: dml
Commands: append, count, delete, deleteall, get, get_counter, get_splits, incr, put, scan, truncate, truncate_preserve
Group name: tools
Commands: assign, balance_switch, balancer, balancer_enabled, catalogjanitor_enabled, catalogjanitor_run, catalogjanitor_switch, close_region, compact, compact_rs, flush, major_compact, merge_region, move, normalize, normalizer_enabled, normalizer_switch, split, trace, unassign, wal_roll, zk_dump
Group name: replication
Commands: add_peer, append_peer_tableCFs, disable_peer, disable_table_replication, enable_peer, enable_table_replication, list_peers, list_replicated_tables, remove_peer, remove_peer_tableCFs, set_peer_tableCFs, show_peer_tableCFs
Group name: snapshots
Commands: clone_snapshot, delete_all_snapshot, delete_snapshot, list_snapshots, restore_snapshot, snapshot
Group name: configuration
Commands: update_all_config, update_config
Group name: quotas
Commands: list_quotas, set_quota
Group name: security
Commands: grant, list_security_capabilities, revoke, user_permission
Group name: procedures
Commands: abort_procedure, list_procedures
Group name: visibility labels
Commands: add_labels, clear_auths, get_auths, list_labels, set_auths, set_visibility
SHELL USAGE:
Quote all names in HBase Shell such as table and column names. Commas delimit
command parameters. Type after entering a command to run it.
Dictionaries of configuration used in the creation and alteration of tables are
Ruby Hashes. They look like this:
{'key1' => 'value1', 'key2' => 'value2', ...}
and are opened and closed with curley-braces. Key/values are delimited by the
'=>' character combination. Usually keys are predefined constants such as
NAME, VERSIONS, COMPRESSION, etc. Constants do not need to be quoted. Type
'Object.constants' to see a (messy) list of all constants in the environment.
If you are using binary keys or values and need to enter them in the shell, use
double-quote'd hexadecimal representation. For example:
hbase> get 't1', "key\x03\x3f\xcd"
hbase> get 't1', "key\003\023\011"
hbase> put 't1', "test\xef\xff", 'f1:', "\x01\x33\x40"
The HBase shell is the (J)Ruby IRB with the above HBase-specific commands added.
For more on the HBase Shell, see http://hbase.apache.org/book.html 表的管理
创建表
hbase(main):004:0> create'scores','grade', 'course' 0 row(s) in 2.8930 seconds => Hbase::Table - scores #查看创建表 hbase(main):006:0> list TABLE scores 1 row(s) in 0.0270 seconds => ["scores"]
查看表的构造
hbase(main):010:0> describe'scores'
Table scores is ENABLED
scores
COLUMN FAMILIES DESCRIPTION
{NAME => 'course', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NO
NE', MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE =>
'true'}
{NAME => 'grade', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NON
E', MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => '
true'}
2 row(s) in 0.2090 seconds
hbase(main):011:0>加入一行数据,行名称为zkb 列族grad的列名为”” 值位5
hbase(main):011:0> put'scores','zkb','grade:','5' 0 row(s) in 0.1240 seconds hbase(main):012:0>
给zkb这一行的数据的列族course添加一列
hbase(main):012:0> put'scores','zkb','course:math','97' 0 row(s) in 0.0120 seconds hbase(main):013:0>
给zkb这一行的数据的列族course添加一列
hbase(main):013:0> put'scores','zkb','course:art','87' 0 row(s) in 0.0140 seconds hbase(main):014:0>
加入一行数据,行名称为baoniu 列族grad的列名为”” 值为4
hbase(main):014:0> put'scores','baoniu','grade:','4' 0 row(s) in 0.0170 seconds
给baoniu这一行的数据的列族course添加一列
hbase(main):015:0> put'scores','baoniu','course:math','89' 0 row(s) in 0.0120 seconds
给Jerry这一行的数据的列族course添加一列
hbase(main):016:0> put'scores','baoniu','course:art','80' 0 row(s) in 0.0150 seconds hbase(main):017:0>
查看scores表中zkb的相关数据
hbase(main):017:0> get'scores','zkb' COLUMN CELL course:art timestamp=1474183749925, value=87 course:math timestamp=1474183718550, value=97 grade: timestamp=1474183615369, value=5 3 row(s) in 0.1280 seconds hbase(main):018:0>
查看scores表中所有数据
hbase(main):018:0> scan'scores' ROW COLUMN+CELL baoniu column=course:art, timestamp=1474183803493, value=80 baoniu column=course:math, timestamp=1474183793034, value=89 baoniu column=grade:, timestamp=1474183782970, value=4 zkb column=course:art, timestamp=1474183749925, value=87 zkb column=course:math, timestamp=1474183718550, value=97 zkb column=grade:, timestamp=1474183615369, value=5 2 row(s) in 0.0590 seconds hbase(main):019:0>
查看scores表中所有数据courses列族的所有数据
hbase(main):019:0> scan'scores',{COLUMNS => 'course'}
ROW COLUMN+CELL
baoniu column=course:art, timestamp=1474183803493, value=80
baoniu column=course:math, timestamp=1474183793034, value=89
zkb column=course:art, timestamp=1474183749925, value=87
zkb column=course:math, timestamp=1474183718550, value=97
2 row(s) in 0.0330 seconds
hbase(main):020:0>参考文档
http://blog.csdn.net/lifuxiangcaohui/article/details/40042117
http://blog.csdn.net/smcwwh/article/details/7468672
http://www.cnblogs.com/nexiyi/p/hbase_shell.html
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