Hive从0.14版本开始支持事务和行级更新,但缺省是不支持的,需要一些附加的配置。要想支持行级insert、update、delete,需要配置Hive支持事务。 一、Hive具有ACID语义事务的使用场景 1. 流式接收数据。 许多用户使用诸如Apache Flume、Apache Storm或Apache Kafka这样的工具将流数据灌入Hadoop集群。当这些工具以每秒数百行的...
<name>hive.txn.manager</name> <value>org.apache.hadoop.hive.ql.lockmgr.DbTxnManager</value> </property> <property> <name>hive.compactor.initiator.on</name> <value>true</value> </property> <property> <name>hive.compactor.worker.threads</name> <value>1</value> </property> 2. 添加Hive...
从Hive 0.14开始,这些使用场景可以通过INSERT、UPDATE和DELETE支持。 二、配置Hive支持事务(Hive 2.0版) 在hive-site.xml文件中添加如下配置项 代码语言:javascript 复制 <property><name>hive.support.concurrency</name><value>true</value></property><property><name>hive.exec.dynamic.partition.mode</name><valu...
-- Uppercase a column value, only for rows that have -- an ID that matches the value from another table. UPDATE kudu_table SET c3 = upper(c3) FROM kudu_table JOIN non_kudu_table ON kudu_table.id = non_kudu_table.id; -- Same effect as previous statement. -- Assign table aliases ...
filepathcan refer to a file(in which case Hive will move the file into the table)or it can be a directory(in which case Hive will move all the files within that directory into the table). In either case,filepathaddresses a set of files. ...
HIVE中数据更新(update)操作的实现 数据更新是一种常见的操作,然后数据仓库的概念一般要求的是数据是集成、稳定的。HIVE作为一种分布式环境下以HDFS为支撑的数据仓库,它同样更多的要求数据是不可变的。...然而现实很多任务中,往往需要对数据进行更新操作,经查,Hive自0.11版本之后就提供了更新操作。于是想着试验一下,...
In theValue databox, type 4, and then clickOK. This step stops the driver from starting. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\Offline On theFilemenu, clickUnload Hive, and then clickYesin theConfirm Unload Hivedialog box. ...
KnownHiveAuthenticationType KnownHiveServerType KnownHiveThriftTransportProtocol KnownHttpAuthenticationType KnownImpalaAuthenticationType KnownIntegrationRuntimeAuthKeyName KnownIntegrationRuntimeAutoUpdate KnownIntegrationRuntimeEdition KnownIntegrationRuntimeEntityReferenceType KnownIntegrationRuntimeInternalChannelEncryptionMode...
Highlight the rows you want to insert and click the Update Rows button. As each row is inserted, the Id value will appear in the Id column and the row's text will change to black, indicating that the record has been inserted.CData...
KnownHiveServerType KnownHiveThriftTransportProtocol KnownHttpAuthenticationType KnownImpalaAuthenticationType KnownIntegrationRuntimeAuthKeyName KnownIntegrationRuntimeAutoUpdate KnownIntegrationRuntimeEdition KnownIntegrationRuntimeEntityReferenceType KnownIntegrationRuntimeInternalChannelEncryptionMode KnownIntegrationRuntimeL...