[HDFS-4283] Spurious Test failures in TestEditLog.testFuzzSequences

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 2.0.3-alpha
• Component/s: test
• Target Version/s: 2.0.3-alpha
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 06/Dec/12 07:00
• Updated: 06/Dec/12 18:52
• Resolved: 06/Dec/12 18:52

Description

testFuzzSequences fails sometimes due to the additional UTF-8 validation added in HADOOP-9103. The issue is that the UTF8 class throws its exceptions as RuntimeExceptions rather than IOExceptions, and the fuzzing code is not expecting that.

Example failure:

Failed

org.apache.hadoop.hdfs.server.namenode.TestEditLog.testFuzzSequences
Failing for the past 5 builds (Since Failed#3600 )
Took 4.8 sec.
Error Message

Caught non-IOException throwable java.lang.RuntimeException: java.io.IOException: Invalid UTF8 at 9871b370d70a  at org.apache.hadoop.io.UTF8.toString(UTF8.java:154)  at org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.readString(FSImageSerialization.java:200)  at org.apache.hadoop.hdfs.server.namenode.FSEditLogOp$TimesOp.readFields(FSEditLogOp.java:1439)  at org.apache.hadoop.hdfs.server.namenode.FSEditLogOp$Reader.decodeOp(FSEditLogOp.java:2399)  at org.apache.hadoop.hdfs.server.namenode.FSEditLogOp$Reader.readOp(FSEditLogOp.java:2290)  at org.apache.hadoop.hdfs.server.namenode.EditLogFileInputStream.nextOpImpl(EditLogFileInputStream.java:177)  at org.apache.hadoop.hdfs.server.namenode.EditLogFileInputStream.nextOpImpl(EditLogFileInputStream.java:175)  at org.apache.hadoop.hdfs.server.namenode.EditLogFileInputStream.nextOp(EditLogFileInputStream.java:217)  at org.apache.hadoop.hdfs.server.namenode.EditLogInputStream.readOp(EditLogInputStream.java:72)  at org.apache.hadoop.hdfs.server.namenode.TestEditLog.validateNoCrash(TestEditLog.java:1233)  at org.apache.hadoop.hdfs.server.namenode.TestEditLog.testFuzzSequences(TestEditLog.java:1272)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)  at java.lang.reflect.Method.invoke(Method.java:597)  at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)  at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)  at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)  at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)  at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)  at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)  at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)  at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)  at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)  at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)  at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)  at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)  at org.junit.runners.ParentRunner.run(ParentRunner.java:236)  at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)  at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)  at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)  at java.lang.reflect.Method.invoke(Method.java:597)  at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)  at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)  at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)  at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)  at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75) Caused by: java.io.IOException: Invalid UTF8 at 9871b370d70a  at org.apache.hadoop.io.UTF8.readChars(UTF8.java:277)  at org.apache.hadoop.io.UTF8.toString(UTF8.java:151)  ... 39 more 

Issue Links

• duplicates: HDFS-4282 TestEditLog.testFuzzSequences FAILED in all pre-commit test