steveloughran commented on pull request #2168:
URL: https://github.com/apache/hadoop/pull/2168#issuecomment-732204082
legit failure of `hadoop.util.TestJsonSerialization`.
As well as fixing, maybe for the serializer, map MismatchedInputException
to EOFException for better handling up the stack
```
Error Message
`file:/tmp/Keyval3692109174763841309.json': Failed to read JSON file
com.fasterxml.jackson.databind.exc.MismatchedInputException: No content to map
due to end-of-input
at [Source:
(org.apache.hadoop.fs.ChecksumFileSystem$FSDataBoundedInputStream); line: 1,
column: 0]: No content to map due to end-of-input
at [Source:
(org.apache.hadoop.fs.ChecksumFileSystem$FSDataBoundedInputStream); line: 1,
column: 0]
Stacktrace
org.apache.hadoop.fs.PathIOException:
`file:/tmp/Keyval3692109174763841309.json': Failed to read JSON file
com.fasterxml.jackson.databind.exc.MismatchedInputException: No content to map
due to end-of-input
at [Source:
(org.apache.hadoop.fs.ChecksumFileSystem$FSDataBoundedInputStream); line: 1,
column: 0]: No content to map due to end-of-input
at [Source:
(org.apache.hadoop.fs.ChecksumFileSystem$FSDataBoundedInputStream); line: 1,
column: 0]
at
org.apache.hadoop.util.JsonSerialization.load(JsonSerialization.java:275)
at
org.apache.hadoop.util.JsonSerialization.load(JsonSerialization.java:246)
at
org.apache.hadoop.util.TestJsonSerialization.lambda$testFileSystemEmptyPath$2(TestJsonSerialization.java:180)
at
org.apache.hadoop.test.LambdaTestUtils.intercept(LambdaTestUtils.java:498)
at
org.apache.hadoop.test.LambdaTestUtils.intercept(LambdaTestUtils.java:384)
at
org.apache.hadoop.util.TestJsonSerialization.testFileSystemEmptyPath(TestJsonSerialization.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
at
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: No
content to map due to end-of-input
at [Source:
(org.apache.hadoop.fs.ChecksumFileSystem$FSDataBoundedInputStream); line: 1,
column: 0]
at
com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59)
at
com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:4360)
at
com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4205)
at
com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3251)
at
org.apache.hadoop.util.JsonSerialization.fromJsonStream(JsonSerialization.java:163)
at
org.apache.hadoop.util.JsonSerialization.load(JsonSerialization.java:273)
... 18 more
```
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