Bharath Vissapragada has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/12296 )

Change subject: IMPALA-8093: Prefix time series counters with a hyphen
......................................................................


Patch Set 1:

(1 comment)

As discussed, we usually use the same CR for subsequent patchsets since the 
reviewers can easily diff between revisions. Its ok for now though since the 
patch is small.

http://gerrit.cloudera.org:8080/#/c/12296/1/tests/query_test/test_observability.py
File tests/query_test/test_observability.py:

http://gerrit.cloudera.org:8080/#/c/12296/1/tests/query_test/test_observability.py@429
PS1, Line 429:     if re.search(" MemoryUsage", profile) is not None:
This is non-deterministic because the query runs so fast that not a single 
sample is collected. So it is worth running some query which has fragment 
instances running for > sampling interval (=500ms).

Also since this probably doesn't require a special test, how about moving this 
assert to after L400? I've checked that the query consistently produces some 
samples. (lineitem and orders are usually the biggest tables and there is a 
join + groupby)



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I2e3f08da765b3e6dedead45760729cbc5e8fb6fa
Gerrit-Change-Number: 12296
Gerrit-PatchSet: 1
Gerrit-Owner: Yongzhi Chen <yc...@cloudera.com>
Gerrit-Reviewer: Bharath Vissapragada <bhara...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Comment-Date: Thu, 31 Jan 2019 19:15:19 +0000
Gerrit-HasComments: Yes

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