ITestS3ABlockOutputArray failure with IO File name too long

On an EC2 instance, the following tests are failing:

ITestS3ABlockOutputArray.testDiskBlockCreateITestS3ABlockOutputByteBuffer>ITestS3ABlockOutputArray.testDiskBlockCreateITestS3ABlockOutputDisk>ITestS3ABlockOutputArray.testDiskBlockCreate

with the error IO File name too long. 

The tests create a file with a 1024 char file name and rely on File.createTempFile() to truncate the file name to < OS limit. 

Stack trace:

Java.io.IOException: File name too long
    at java.io.UnixFileSystem.createFileExclusively(Native Method)
    at java.io.File.createTempFile(File.java:2063)
    at org.apache.hadoop.fs.s3a.S3AFileSystem.createTmpFileForWrite(S3AFileSystem.java:1377)
    at org.apache.hadoop.fs.s3a.S3ADataBlocks$DiskBlockFactory.create(S3ADataBlocks.java:829)
    at org.apache.hadoop.fs.s3a.ITestS3ABlockOutputArray.testDiskBlockCreate(ITestS3ABlockOutputArray.java:114)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)