Hi Chandrash,

What do you have in your /etc/hosts? Can you also share the piece of code
where you are doing the connection to HBase?

Thanks,

JM


2014-07-30 7:34 GMT-04:00 Chandrashekhar Kotekar <shekhar.kotekar@gmail.com>
:

> I have a HBase cluster on AWS. I have written few REST services which are
> supposed to connect to this HBase cluster and get some data.
>
> My configuration is as below :
>
>    1. Java code, eclipse, tomcat running on my desktop
>    2. HBase cluster, Hadoop cluster sitting on AWS
>    3. Can connect to HBase cluster, Hadoop cluster ONLY THROUGH VPN
>
> Whenever web service tries to do ANY operation on HBase, it throws Could
> not resolve the DNS name of slave2:60020 error with following stack trace.
>
>
> java.lang.IllegalArgumentException: Could not resolve the DNS name of
> slave2:60020
>     at
> org.apache.hadoop.hbase.HServerAddress.checkBindAddressCanBeResolved(HServerAddress.java:105)
>     at
> org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:66)
>     at
> org.apache.hadoop.hbase.zookeeper.RootRegionTracker.dataToHServerAddress(RootRegionTracker.java:82)
>     at
> org.apache.hadoop.hbase.zookeeper.RootRegionTracker.waitRootRegionLocation(RootRegionTracker.java:73)
>     at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:578)
>     at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:558)
>     at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:687)
>     at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:589)
>
>  at
> org.apache.hadoop.hbase.client.HTablePool.createHTable(HTablePool.java:129)
>     at
> org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:96)
>     at com.shekhar.dao.AdminDAO.getAdminInfoByRowKey(AdminDAO.java:63)
>     at com.shekhar.auth.Authorization.isSystemAdmin(Authorization.java:41)
>     at
> com.shekhar.business.ReadingProcessor.getReadingInfo(ReadingProcessor.java:310)
>     at
> com.shekhar.services.ReadingService.getReadings(ReadingService.java:543)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>
>
>
>
> In hbase-site.xml file I have given IP address of HBase master and in
> core-site.xml file IP address of namenode is given.
>
> Has anyone faced this type of problem? Why this problem arises?
>
> I have posted same question on Stack overflow but no one replied hence
> posting question here.
>
> Request you to please help.
>
>
>
> Regards,
> Chandrash3khar Kotekar
> Mobile - +91 8600011455
>