fixing hadoop test scope dependencies in indexing-hadoop

[himanshug]

with #1815 , we are getting following exception on our build machines.

io.druid.indexer.HdfsClasspathSetupTest  Time elapsed: 1.657 sec  <<< ERROR!
java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: "localhost.localdomain":44443; java.net.UnknownHostException; For more details see:  http://wiki.apache.org/hadoop/UnknownHost
at org.apache.hadoop.ipc.Client$Connection.<init>(Client.java:400)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1448)
at org.apache.hadoop.ipc.Client.call(Client.java:1377)
at org.apache.hadoop.ipc.Client.call(Client.java:1359)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy90.getDatanodeReport(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy90.getDatanodeReport(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getDatanodeReport(ClientNamenodeProtocolTranslatorPB.java:555)
at org.apache.hadoop.hdfs.DFSClient.datanodeReport(DFSClient.java:2189)
at org.apache.hadoop.hdfs.MiniDFSCluster.waitActive(MiniDFSCluster.java:1901)
at org.apache.hadoop.hdfs.MiniDFSCluster.waitActive(MiniDFSCluster.java:1920)
at org.apache.hadoop.hdfs.MiniDFSCluster.startDataNodes(MiniDFSCluster.java:1238)
at org.apache.hadoop.hdfs.MiniDFSCluster.initMiniDFSCluster(MiniDFSCluster.java:684)
at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:351)
at org.apache.hadoop.hdfs.MiniDFSCluster$Builder.build(MiniDFSCluster.java:332)
at io.druid.indexer.HdfsClasspathSetupTest.setupStatic(HdfsClasspathSetupTest.java:80)

this change fixes the issue.
However, I am not entirely sure of why it fails otherwise.

[drcrallen]

@himanshug how odd.

👍 after travis

[gianm]

👍