Witryna14 sie 2024 · INVALIDATE METADATA of the table only when I change the structure of the table (add columns, drop partitions) through HIVE? Correct. Or creating new … Witryna12 kwi 2024 · impala有两种刷新元数据的方法,invalidate metadata和refresh。invalidate metadata是用于刷新全库或者某个表的元数据,包括表的元数据和表内的文 …
Impala refresh vs compute stats - Cloudera Community - 312930
Witryna31 sie 2024 · INVALIDATE METADATA执行完成。 INVALIDATE METADATA操作带来的副作用是生成一个新的未完成的元数据对象,对于操作请求的impalad(称它为impalad-A),能够立马获取到该对象,对于其它的impalad需要通过statestored同步,因此执行完该操作,处理该操作的impalad对于该表的缓存是一个新的但是不完整的对象,其余 … Witryna28 gru 2024 · impala中有两种同步元数据的方式:invalidate metadata和refresh。 使用 Impala 执行的DDL操作,不需要使用任何INVALIDATE METADATA / REFRESH命令。 …dutchess county holiday schedule 2023
impala系列: 同步Hive元数据和收集统计信息 - harrychinese - 博 …
Witryna28 sie 2024 · Invalidate Metadata: As a workaround, create a shell script to do the below steps. Using beeline, connect to a particular database and run show tables statement …WitrynaThe functionality of the REFRESH statement has changed in Impala 1.1 and higher. Now the table name is a required parameter. To flush the metadata for all tables, use the INVALIDATE METADATA command. Because REFRESH table_name only works for tables that the current Impala node is already aware of, when you create a new table … Witryna15 wrz 2024 · INVALIDATE METADATA and REFRESH are counterparts: INVALIDATE METADATA is an asynchronous operations that simply discards the loaded metadata from the catalog and coordinator caches. After that operation, the catalog and all the Impala coordinators only know about the existence of databases and tables and …in a meta-analysis the units of analysis are