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01e1c5345a
In case you have different roles for the same user on multiple clusters,
ON CLUSTER query can help to overcome some limitations.
Consider the following example:
- cluster_with_data, dev_user (readonly=2)
- stage_cluster, dev_user (readonly=0)
So when you will execute the following query from stage_cluster, it will
be successfully executed, since ON CLUSTER queries has different system
profile:
DROP DATABASE default ON CLUSTER cluster_with_data
This is not 100% safe, but at least something.
Note, that right now only ON CLUSTER query it self is supported, but
separate clusters are not (i.e. GRANT CLUSTER some_cluster_name TO
default), since right now grants sticked to database+.
v2: on_cluster_queries_require_cluster_grant
v3: fix test and process flags as bit mask
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
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| fuzz | ||
| instructions | ||
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| jepsen.clickhouse-keeper | ||
| perf_drafts | ||
| performance | ||
| queries | ||
| .gitignore | ||
| clickhouse-test | ||
| CMakeLists.txt | ||
| msan_suppressions.txt | ||
| stress | ||
| tsan_suppressions.txt | ||
| ubsan_suppressions.txt | ||