12-26-2016 05:36 AM
12-27-2016 04:29 PM
You can look at "MemTracker Process Limit Across Impala Daemons", which is the per-process limit and "TCMalloc Physical Bytes Reserved", which is the consumption. If the consumption exceeds the process limit, queries will start failing. Note that those numbers don't include the JVM heap size.
If you use admission control based on memory limits, queries won't be admitted if the sum of query memory limits would exceed the process memory limit.