Accumulo generally uses the settings in the hdfs configuration files using FileSystem.get(new Configuration()).
In 1.5 you can configure instance.dfs.uri to specify a NameNode uri. In 1.6 you can set instance.volumes to multiple uri's, but this is not the same as HA. -Eric On Tue, Sep 3, 2013 at 12:43 PM, Smith, Joshua D. <[email protected]>wrote: > Eric-**** > > ** ** > > The link you sent is directly relevant, but unfortunately it didn’t > resolve it.**** > > ** ** > > I already had the following property set**** > > <property>**** > > <name>dfs.client.failover.proxy.provider.mycluster</name>* > *** > > > <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value> > **** > > </property>**** > > ** ** > > The discussion at the link that you sent was in a CDH forum and it looked > like HA resulted in some required changes for the hdfs command to be able > to resolve the active NameNode. That leads me to two questions:**** > > ** ** > > **1) **Does Accumulo know how to resolve the active NameNode?**** > > **2) **If it doesn’t, is there a way to explicitly specify it like > the user did for the hdfs command as a work-around?**** > > ** ** > > Josh**** > > ** ** > > *From:* Eric Newton [mailto:[email protected]] > *Sent:* Tuesday, September 03, 2013 12:24 PM > *To:* [email protected] > *Subject:* Re: Accumulo with NameNode HA: UnknownHostException for > dfs.nameservices**** > > ** ** > > This discussion seems to provide some insight:**** > > ** ** > > https://groups.google.com/a/cloudera.org/forum/#!topic/cdh-user/I_OmKdZOjVE > **** > > ** ** > > Please let us know if you get it working; I would like to test this for > the 1.6.0 release.**** > > ** ** > > -Eric**** > > ** ** > > ** ** > > On Tue, Sep 3, 2013 at 12:06 PM, Smith, Joshua D. <[email protected]> > wrote:**** > > All-**** > > **** > > 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: java.net.UnknownHostException: > mycluster**** > > java.lang.IllegalArgumentException: java.net.UnknownHostException: > mycluster**** > > at > org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:414) > **** > > at > org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProzies.java:164) > **** > > at > org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:129) > **** > > at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:448)**** > > at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:410)**** > > at > org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:128) > **** > > at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2308)* > *** > > at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:87)**** > > at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2324) > **** > > at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:351)**** > > at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:163)**** > > at org.apache.accumulo.core.file.FileUtil.getFileSystem(FileUtil.java:550) > **** > > at org.apache.accumulo.server.util.Initialize.main(Initialize.java:485)*** > * > > …**** > > **** > > “mycluster” is from my hdfs-site.xml and is part of the HA configuration** > ** > > <property>**** > > <name>dfs.nameservices</name>**** > > <value>mycluster</value>**** > > </property>**** > > **** > > 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?**** > > **** > > Thanks,**** > > Josh**** > > **** > > **** > > **** > > ** ** >
