Michael Ho created IMPALA-8480:
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Summary: Replace ScopedFlagSetter with google::FlagSaver
Key: IMPALA-8480
URL: https://issues.apache.org/jira/browse/IMPALA-8480
Project: IMPALA
Issue Type: Improvement
Components: Infrastructure
Reporter: Michael Ho
[~tlipcon] pointed out that in [code review
|https://gerrit.cloudera.org/#/c/12987/7/be/src/runtime/io/data-cache-test.cc@274]{{google::FlagSaver}}
already saves the state of all flags at time of construction and restores all
of them on destruction. Currently, we rely on {{ScopedFlagSetter}} to save and
restore modified flags in BE tests. We need to define a {{ScopedFlagSetter}}
object per modified flags.
It seems less clumsy for BE tests if all of them inherit from a base class
which has {{google::FlagSaver}} as a class member. In this way, all modified
flags in BE tests will be automatically restored and there is no need for a
separate {{ScopedFlagSetter}} per modified flag.
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