Help Center/ MapReduce Service/ Component Operation Guide (LTS)/ Using HetuEngine/ HetuEngine SQL Syntax/ SQL Syntax/ Auxiliary Command Syntax/ REFRESH CATALOG
Updated on 2022-11-18 GMT+08:00
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REFRESH CATALOG

This statement is used to manually refresh the HetuEngine MetaStore cache to synchronize the metadata of tables, partitions, and databases of the Hive data source.

Syntax

REFRESH CATALOG catalog_name

Example

Log in to FusionInsight Manager, and choose Cluster > Name of the desired cluster > Service > HetuEngine > Configuration > All Configurations. Set hive.metastore-cache-ttl and hive.metastore-refresh-interval to 5m, indicating that the metadata cache is refreshed every 5 minutes.

Use Hive to create a table tb3 and the query result on Hetu-cli is:

 show tables;
 Table 
-------
 tb1   
 tb2   
(2 rows)

Refresh the metadata cache and query again.

 refresh catalog hive;
show tables;
 Table 
-------
 tb1   
 tb2   
 tb3   
(3 rows)
Parent topic: Auxiliary Command Syntax