HBase基础培训PPT学习课件.ppt

HBase基础培训HBase简介HBase结构图HBase体系架构Client：包含访问HBase的接口，并维护cache来加快对HBase的访问，比如region的位置信息Master:为Regionserver分配region负责Regionserver的负载均衡发现失效的Regionserver并重新分配其上region管理用户对table的增删改查操作HBase逻辑模型RowKey：是Bytearray，是表中每条记录的“主键”，方便快速查找，Rowkey的设计非常重要。ColumnFamily：列族，拥有一个名称(string)，包含一个或者多个相关列Column：属于某一个columnfamily，familyName:columnName，每条记录可动态添加VersionNumber：类型为Long，默认值是系统时间戳，可由用户自定义Value(Cell)：由{rowkey,column(=<family>+<label>),version}唯一确定的单元。cell中的数据是没有类型的，全部是字节码形式存贮。HBase物理模型HBase物理模型HBase部署Groupname:generalCommands:status,table_help,version,whoamiGroupname:ddlCommands: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_filtersGroupname:namespaceCommands:alter_namespace,create_namespace,describe_namespace,drop_namespace,list_namespace,list_namespace_tablesGroupname:dmlCommands:append,count,delete,deleteall,get,get_counter,get_splits,incr,put,scan,truncate,truncate_preserveGroupname:toolsCommands:assign,balance_switch,balancer,balancer_enabled,catalogjanitor_enabled,catalogjanitor_run,catalogjanitor_switch,close_region,compact,compact_mob,compact_rs,flush,major_compact,major_compact_mob,merge_region,move,normalize,normalizer_enabled,normalizer_switch,split,trace,unassign,wal_roll,zk_dumpGroupname:replicationCommands: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_tableCFsGroupname:snapshotsCommands:clone_snapshot,delete_all_snapshot,delete_snapshot,list_snapshots,restore_snapshot,snapshotGroupname:configurationCommands:update_all_config,update_configGroupname:quotasCommands:list_quotas,set_quotaGroupname:securityCommands:grant,list_security_capabilities,revoke,user_permissionGroupname:proceduresCommands:abort_procedure,list_proceduresGroupname:visibilitylabelsCommands:add_labels,clear_auths,get_auths,list_label