Context
The large query isolation feature allows you to separately manage large queries. You can isolate query requests that consume a large amount of memory or take a long period of time. If the heap memory usage of a node is too high, the interrupt control program will be triggered. The program will interrupt a large query based on the policies you configured and cancel the running query tasks of the query.
You can also configure a global query timeout duration. Long queries will be intercepted.
![](https://support.huaweicloud.com/eu/usermanual-css/public_sys-resources/note_3.0-en-us.png)
Currently, only versions 7.6.2 support large query isolation.
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