[Impala-ASF-CR] IMPALA-8858: Add observability of the query load on executor groups

["Bikramjeet Vig (Code Review)" <ge...@cloudera.org>]

Hello Andrew Sherman, Lars Volker, Impala Public Jenkins, 

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/14103

to look at the new patch set (#7).

Change subject: IMPALA-8858: Add observability of the query load on executor groups
......................................................................

IMPALA-8858: Add observability of the query load on executor groups

With this patch, all executor groups with at least one executor
will have a metric added that display the number of queries
(admitted by the local coordinator) running on them. The metric
is removed only when the group has no executors or no longer
exists. It gets updated when either the cluster membership
changes or a query gets admitted or released by the admission
controller. Also adds the ability to delete metrics from a metric
group after registration.

Testing:
Added a custom cluster test and a BE metric test.

Change-Id: I58cde8699c33af8b87273437e9d8bf6371a34539
---
M be/src/runtime/exec-env.cc
M be/src/scheduling/admission-controller.cc
M be/src/scheduling/admission-controller.h
M be/src/scheduling/cluster-membership-mgr.cc
M be/src/scheduling/cluster-membership-mgr.h
M be/src/service/impala-server.cc
M be/src/service/impala-server.h
M be/src/util/metrics-test.cc
M be/src/util/metrics.cc
M be/src/util/metrics.h
M common/thrift/metrics.json
M tests/custom_cluster/test_executor_groups.py
12 files changed, 264 insertions(+), 135 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/03/14103/7
-- 
To view, visit http://gerrit.cloudera.org:8080/14103
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I58cde8699c33af8b87273437e9d8bf6371a34539
Gerrit-Change-Number: 14103
Gerrit-PatchSet: 7
Gerrit-Owner: Bikramjeet Vig <bi...@cloudera.com>
Gerrit-Reviewer: Andrew Sherman <as...@cloudera.com>
Gerrit-Reviewer: Bikramjeet Vig <bi...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <im...@cloudera.com>
Gerrit-Reviewer: Lars Volker <lv...@cloudera.com>