[PHOENIX-849] Test StatsManagerIT#testStatsManager is flaky

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0, 4.0.0
• Assignee: Unassigned
• Reporter: Jeffrey Zhong
• Created: 14/Mar/14 01:11
• Updated: 21/Nov/15 02:17
• Resolved: 14/Mar/14 17:30

Description

You will see it fails if you run it 10 times in a loop. Below is the error stack trace:

java.lang.AssertionError: null
	at org.junit.Assert.fail(Assert.java:86)
	at org.junit.Assert.assertTrue(Assert.java:41)
	at org.junit.Assert.assertTrue(Assert.java:52)
	at org.apache.phoenix.end2end.StatsManagerTest.testStatsManager(StatsManagerTest.java:136)

The root cause is that the constructor MinKeyChange & MaxKeyChange internally trigger the states update

        MinKeyChange minKeyChange = new MinKeyChange(stats, table);
        MaxKeyChange maxKeyChange = new MaxKeyChange(stats, table);

So the latter

stats.getMinKey(table);

gets a different value unexpectedly.