dengzhhu653 commented on code in PR #5629:
URL: https://github.com/apache/hive/pull/5629#discussion_r1946175399
##########
packaging/src/docker/README.md:
##########
@@ -210,3 +210,14 @@ docker compose down
select count(distinct a) from hive_example;
select sum(b) from hive_example;
```
+
+#### Hive Schema Tool
+
+`Hive Schema Tool` is located in the Docker Image at
`/opt/hive/bin/schematool`.
+Possible use cases are as follows,
+
+```shell
+docker run -d --env SERVICE_NAME=hiveserver2 --name hive4
apache/hive:${HIVE_VERSION}
+docker exec -it hive4 /bin/bash
+/opt/hive/bin/schematool -info -dbType hive -metaDbType derby -url
jdbc:hive2://localhost:10000/default
Review Comment:
In order for HiveServer2 to read the `sys` table, the HiveServer2 needs to
configure the properties to connect the backing db:
```
javax.jdo.option.ConnectionURL
javax.jdo.option.ConnectionDriverName
javax.jdo.option.ConnectionUserName
javax.jdo.option.ConnectionPassword
```
otherwise though we can create those tables, still we cann't get the real
info that the HMS stores, as it goes to the embedded derby to when querying the
table.
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