Chengbing Liu created HADOOP-18567:
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Summary: LogThrottlingHelper: the dependent recorder is not
triggered correctly
Key: HADOOP-18567
URL: https://issues.apache.org/jira/browse/HADOOP-18567
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 3.3.4
Reporter: Chengbing Liu
The current implementation of {{LogThrottlingHelper}} works well most of the
time, but it missed out one case, which appears quite common in the production
codes:
- if the dependent recorder was not suppressed before the primary one is
triggered on the next period, then the next logging of the dependent recorder
will be unexpectedly suppressed.
{code:java}
helper = new LogThrottlingHelper(LOG_PERIOD, "foo", timer);
assertTrue(helper.record("foo", 0).shouldLog());
assertTrue(helper.record("bar", 0).shouldLog());
// Both should log once the period has elapsed
// <pos1>
assertTrue(helper.record("foo", LOG_PERIOD).shouldLog());
assertTrue(helper.record("bar", LOG_PERIOD).shouldLog()); <--- This
assertion will now fail
{code}
Note if we call {{helper.record("bar", LOG_PERIOD * 2)}} in <pos1>, as the
existing test cases do, it will work as expected.
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