Lin Yiqun created HDFS-10197:
--------------------------------
Summary: TestFsDatasetCache failing intermittently due to timeout
Key: HDFS-10197
URL: https://issues.apache.org/jira/browse/HDFS-10197
Project: Hadoop HDFS
Issue Type: Bug
Components: test
Reporter: Lin Yiqun
Assignee: Lin Yiqun
In {{TestFsDatasetCache}}, the unit tests failed sometimes. I collected some
failed reason in recent jenkins reports. They are all timeout errors.
{code}
Tests in error:
TestFsDatasetCache.testFilesExceedMaxLockedMemory:378 ? Timeout Timed out
wait...
TestFsDatasetCache.tearDown:149 ? Timeout Timed out waiting for condition.
Thr...
{code}
{code}
Tests in error:
TestFsDatasetCache.testPageRounder:474 ? test timed out after 60000
milliseco...
TestBalancer.testUnknownDatanodeSimple:1040->testUnknownDatanode:1098 ? test
...
{code}
But there was a little different between these failure.
* The first because the total block time was exceed the {{waitTimeMillis}}(here
is 60s) and then throw the timeout exception and print thread diagnostic string.
{code}
long st = Time.now();
do {
boolean result = check.get();
if (result) {
return;
}
Thread.sleep(checkEveryMillis);
} while (Time.now() - st < waitForMillis);
throw new TimeoutException("Timed out waiting for condition. " +
"Thread diagnostics:\n" +
TimedOutTestsListener.buildThreadDiagnosticString());
{code}
* The second is due to test elapsed time more than timeout time setting. Like
in {{TestFsDatasetCache#testPageRounder}}.
We should adjust timeout time for these unit test which would failed sometimes
due to timeout.
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