This only affects 1.6.x, since we dropped support for Hadoop 1 in 1.7.0.
ExistingMacIT fails with the following stack trace:
Running org.apache.accumulo.test.ExistingMacIT
Tests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 29.305 sec <<< FAILURE! - in org.apache.accumulo.test.ExistingMacIT
testExistingInstance(org.apache.accumulo.test.ExistingMacIT) Time elapsed: 19.494 sec <<< ERROR!
java.lang.RuntimeException: java.io.IOException: No FileSystem for scheme: file
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1443)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:67)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1464)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:263)
at org.apache.hadoop.fs.Path.getFileSystem(Path.java:187)
at org.apache.accumulo.core.volume.VolumeImpl.<init>(VolumeImpl.java:42)
at org.apache.accumulo.core.volume.VolumeConfiguration.create(VolumeConfiguration.java:159)
at org.apache.accumulo.server.fs.VolumeManagerImpl.get(VolumeManagerImpl.java:420)
at org.apache.accumulo.minicluster.impl.MiniAccumuloClusterImpl.start(MiniAccumuloClusterImpl.java:489)
at org.apache.accumulo.test.ExistingMacIT.testExistingInstance(ExistingMacIT.java:117)