MapleTing的专栏

select tmp.*, t.*, date_add(start_date, pos) as mid_datefrom( select '1' as uid, '2020-07-01' as start_date, '2020-07-17' as end_date )tmplateral view posexplode( split( space( datediff( end_date, start_date ) ), '' ) ) t as

 STARTUP_MSG:   build = https://git-wip-us.apache.org/repos/asf/hadoop.git -r 826afbeae31ca687bc2f8471dc841b66ed2c6704; compiled by 'ajisaka' on 2018-11-13T12:42ZSTARTUP_MSG:   java = 1.8.0_65****...

使用hadoop2.9.2版本，服务启动正常，日志也没有看到错误信息。但是启动后hdfs dfs -ls和hdfs dfs -mkdir等操作均无法完成，只报Couldn't create proxy provider null的错误信息，在日志里面也没有看到什么错误提示。在网上找了很久这个报错的内容很少，hdfs也重新格式化过了都没有用。解决：<name>dfs.client...

报错内容：ERROR [Thread-21] master.HMaster: Failed to become activemasterjava.lang.IllegalStateException: The procedure WAL relies on the ability to hsync forproper operation during component failures...