[Impala-ASF-CR] IMPALA-7981: Add host disk statistics to profile

["Lars Volker (Code Review)" <ge...@cloudera.org>]

Hello Michael Ho, Impala Public Jenkins, 

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

    http://gerrit.cloudera.org:8080/12822

to look at the new patch set (#4).

Change subject: IMPALA-7981: Add host disk statistics to profile
......................................................................

IMPALA-7981: Add host disk statistics to profile

This change adds host disk statistics to profiles. For each host that
participates in the query execution it adds the read and write bandwidth
across all disks. This includes all data read or written by the host as
part of the execution of a query (spilling), by the HDFS data node, and
by other processes running on the same system.

The change adds tests for the added functionality to the backend and end
to end tests.

Change-Id: I373e7da47a0d722938e6ca1572c49a502951ed57
---
M be/src/runtime/query-state.cc
M be/src/util/disk-info.h
M be/src/util/system-state-info-test.cc
M be/src/util/system-state-info.cc
M be/src/util/system-state-info.h
M tests/query_test/test_observability.py
6 files changed, 245 insertions(+), 31 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/22/12822/4
-- 
To view, visit http://gerrit.cloudera.org:8080/12822
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I373e7da47a0d722938e6ca1572c49a502951ed57
Gerrit-Change-Number: 12822
Gerrit-PatchSet: 4
Gerrit-Owner: Lars Volker <lv...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <im...@cloudera.com>
Gerrit-Reviewer: Lars Volker <lv...@cloudera.com>
Gerrit-Reviewer: Michael Ho <kw...@cloudera.com>