Hello Dan Hecht,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/8215
to look at the new patch set (#3).
Change subject: IMPALA-5142 EventSequence displays negative elapsed time.
......................................................................
IMPALA-5142 EventSequence displays negative elapsed time.
EventSequence::EventList which stores the Event in increasing time order may
have
at times Events that are not stored in increasing time order. This may happen
when
concurrently EventSequence::MarkEvent() is called for different Events in the
same
EventSequence.
The incorrect time order of Event in EventList results in a negative value being
displayed, which is the issue reported in this JIRA.
The issue can be fixed either be re-ordering the lock in
EventSequence::MarkEvent()
or by sorting the EventList before printing. Reordering of lock in
EventSequence::MarkEvent() will involve holding the lock across clock_gettime()
so that
approach is not taken. This patch fixes the issue by sorting the EventList in
GetEvents()
as this function is expected to return sorted list of events based on time.
Testing:
Ran all the front-end/backend and end-end tests.
Change-Id: I8c944396d96473b17b453da3e913ffc56680a896
---
M be/src/util/runtime-profile-counters.h
1 file changed, 19 insertions(+), 0 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/15/8215/3
--
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I8c944396d96473b17b453da3e913ffc56680a896
Gerrit-Change-Number: 8215
Gerrit-PatchSet: 3
Gerrit-Owner: Pranay Singh
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Pranay Singh
