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From "Michael Ho (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-4557: Fix flakiness with FLAGS stress free pool alloc
Date Thu, 01 Dec 2016 00:01:45 GMT
Hello Tim Armstrong,

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

    http://gerrit.cloudera.org:8080/5281

to look at the new patch set (#3).

Change subject: IMPALA-4557: Fix flakiness with FLAGS_stress_free_pool_alloc
......................................................................

IMPALA-4557: Fix flakiness with FLAGS_stress_free_pool_alloc

FLAGS_stress_free_pool_alloc is a gflag for simulating malloc
failure in debug builds. If set, FreePool::Allocate() and
FreePool::Reallocate() will return NULL on every
FLAGS_stress_free_pool_alloc allocations. The problem is that
the counter for tracking number of allocations is updated
racily by multiple threads, leading to non-determinism and
flaky tests. This change fixes the problem by making the counter
an AtomicInt32.

Change-Id: I373035d209a0f3477650336ee6da458fa289dbe0
---
M be/src/common/atomic.h
M be/src/runtime/CMakeLists.txt
A be/src/runtime/free-pool.cc
M be/src/runtime/free-pool.h
4 files changed, 41 insertions(+), 6 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/81/5281/3
-- 
To view, visit http://gerrit.cloudera.org:8080/5281
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I373035d209a0f3477650336ee6da458fa289dbe0
Gerrit-PatchSet: 3
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Michael Ho <kwho@cloudera.com>
Gerrit-Reviewer: Jim Apple <jbapple-impala@apache.org>
Gerrit-Reviewer: Michael Ho <kwho@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstrong@cloudera.com>

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