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HADOOP-8894. GenericTestUtils.waitFor should dump thread stacks on timeout. Contributed by Todd Lipcon.

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1395825 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Todd Lipcon 2012-10-09 00:33:57 +00:00
parent 03c96ef29e
commit ad9bcb9e5a
3 changed files with 27 additions and 12 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -297,6 +297,9 @@ Release 2.0.3-alpha - Unreleased
HADOOP-8804. Improve Web UIs when the wildcard address is used.
(Senthil Kumar via eli)
HADOOP-8894. GenericTestUtils.waitFor should dump thread stacks on timeout
(todd)
OPTIMIZATIONS
HADOOP-8866. SampleQuantiles#query is O(N^2) instead of O(N). (Andrew Wang

5
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java
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@ -104,7 +104,10 @@ public static void waitFor(Supplier<Boolean> check,
Thread.sleep(checkEveryMillis);
} while (Time.now() - st < waitForMillis);
throw new TimeoutException("Timed out waiting for condition");
throw new TimeoutException("Timed out waiting for condition. " +
"Thread diagnostics:\n" +
TimedOutTestsListener.buildThreadDiagnosticString());
}
public static class LogCapturer {

31
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/TimedOutTestsListener.java
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@ -58,19 +58,28 @@ public void testFailure(Failure failure) throws Exception {
&& failure.getMessage().startsWith(TEST_TIMED_OUT_PREFIX)) {
output.println("====> TEST TIMED OUT. PRINTING THREAD DUMP. <====");
output.println();
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss,SSS");
output.println(String.format("Timestamp: %s", dateFormat.format(new Date())));
output.println();
output.println(buildThreadDump());
String deadlocksInfo = buildDeadlockInfo();
if (deadlocksInfo != null) {
output.println("====> DEADLOCKS DETECTED <====");
output.println();
output.println(deadlocksInfo);
}
output.print(buildThreadDiagnosticString());
}
}
public static String buildThreadDiagnosticString() {
StringWriter sw = new StringWriter();
PrintWriter output = new PrintWriter(sw);
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss,SSS");
output.println(String.format("Timestamp: %s", dateFormat.format(new Date())));
output.println();
output.println(buildThreadDump());
String deadlocksInfo = buildDeadlockInfo();
if (deadlocksInfo != null) {
output.println("====> DEADLOCKS DETECTED <====");
output.println();
output.println(deadlocksInfo);
}
return sw.toString();
}
static String buildThreadDump() {
StringBuilder dump = new StringBuilder();