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From "Smith, Joshua D." <>
Subject Accumulo with NameNode HA: UnknownHostException for dfs.nameservices
Date Tue, 03 Sep 2013 16:06:31 GMT

I'm installing Accumulo 1.5 on CDH 4.3. I'm running Hadoop 2.0 (yarn) with High Availability
(HA) for the NameNode. When I try to initialize Accumulo I get the following error message:

>sudo -u accumulo accumulo init

FATAL: java.lang.IllegalArgumentException: mycluster
java.lang.IllegalArgumentException: mycluster
at org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(
at org.apache.hadoop.hdfs.NameNodeProxies.createProxy(
at org.apache.hadoop.hdfs.DFSClient.<init>(
at org.apache.hadoop.hdfs.DFSClient.<init>(
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(
at org.apache.hadoop.fs.FileSystem.createFileSystem(
at org.apache.hadoop.fs.FileSystem.access$200(
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(
at org.apache.hadoop.fs.FileSystem.get(
at org.apache.hadoop.fs.FileSystem.get(
at org.apache.accumulo.core.file.FileUtil.getFileSystem(
at org.apache.accumulo.server.util.Initialize.main(

"mycluster" is from my hdfs-site.xml and is part of the HA configuration

It's not a hostname and I'm not sure why Accumulo would try to resolve it as if it was a hostname.

Any idea why I would get this error or why Accumulo would have trouble running on Hadoop 2.0
with HA?


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