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From: "Smith, Joshua D." <Joshua.Smith@gd-ais.com>
To: "user@accumulo.apache.org" <user@accumulo.apache.org>
Subject: Accumulo with NameNode HA: UnknownHostException for dfs.nameservices
Thread-Topic: Accumulo with NameNode HA: UnknownHostException for
 dfs.nameservices
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Date: Tue, 3 Sep 2013 16:06:31 +0000
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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: m=
ycluster
java.lang.IllegalArgumentException: java.net.UnknownHostException: mycluste=
r
at org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.j=
ava: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(DistributedFileS=
ystem.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 a=
s if it was a hostname.

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

Thanks,
Josh




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<p class=3D"MsoNormal">All-<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I&#8217;m installing Accumulo 1.5 on CDH 4.3. I&#821=
7;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:<o:p><=
/o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
&gt;sudo &#8211;u accumulo accumulo init<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
<o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
FATAL: java.lang.IllegalArgumentException: java.net.UnknownHostException: m=
ycluster<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
java.lang.IllegalArgumentException: java.net.UnknownHostException: mycluste=
r<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.j=
ava:414)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProzies.=
java:164)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:=
129)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.hdfs.DFSClient.&lt;init&gt;(DFSClient.java:448)<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.hdfs.DFSClient.&lt;init&gt;(DFSClient.java:410)<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileS=
ystem.java:128)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2308)<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:87)<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2324)<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:351)<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
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n></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.accumulo.core.file.FileUtil.getFileSystem(FileUtil.java:550)<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
at org.apache.accumulo.server.util.Initialize.main(Initialize.java:485)<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
&#8230;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&#8220;mycluster&#8221; is from my hdfs-site.xml and=
 is part of the HA configuration<o:p></o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
&lt;property&gt;<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:.5in"><span style=3D"font-famil=
y:&quot;Courier New&quot;">&lt;name&gt;dfs.nameservices&lt;/name&gt;<o:p></=
o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:.5in"><span style=3D"font-famil=
y:&quot;Courier New&quot;">&lt;value&gt;mycluster&lt;/value&gt;<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&quot;Courier New&quot;">=
&lt;/property&gt;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">It&#8217;s not a hostname and I&#8217;m not sure why=
 Accumulo would try to resolve it as if it was a hostname.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Any idea why I would get this error or why Accumulo =
would have trouble running on Hadoop 2.0 with HA?<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Thanks,<o:p></o:p></p>
<p class=3D"MsoNormal">Josh<o:p></o:p></p>
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