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HBase >> mail # user >> Pseudo Distributed: ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of localhost.localdomain


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Re:: Pseudo Distributed: ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of localhost.localdomain

Have you restarted zookeeper? Also clearing zookeeper data dir and data log dir might also help.. it seems that localhost.localdomain is being cached somewhere

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On Thu 7 Jun, 2012 2:48 PM IST Manu S wrote:

>Hi All,
>
>In pseudo distributed node HBaseMaster is stopping automatically when we
>starts HbaseRegion.
>
>I have changed all the configuration files of Hadoop,Hbase & Zookeeper to
>set the exact hostname of the machine. Also commented the localhost entry
>from /etc/hosts & cleared the cache as well. There is no entry of
>localhost.localdomain entry in these configurations, but this it is
>resolving to localhost.localdomain.
>
>Please find the error:
>2012-06-07 12:13:11,995 INFO
>org.apache.hadoop.hbase.master.MasterFileSystem: No logs to split
>*2012-06-07 12:13:12,103 ERROR org.apache.hadoop.hbase.HServerAddress:
>Could not resolve the DNS name of localhost.localdomain
>2012-06-07 12:13:12,104 FATAL org.apache.hadoop.hbase.master.HMaster:
>Unhandled exception. Starting shutdown.*
>*java.lang.IllegalArgumentException: hostname can't be null*
>        at java.net.InetSocketAddress.<init>(InetSocketAddress.java:121)
>        at
>org.apache.hadoop.hbase.HServerAddress.getResolvedAddress(HServerAddress.java:108)
>        at
>org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:64)
>        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.catalog.CatalogTracker.waitForRoot(CatalogTracker.java:222)
>        at
>org.apache.hadoop.hbase.catalog.CatalogTracker.waitForRootServerConnection(CatalogTracker.java:240)
>        at
>org.apache.hadoop.hbase.catalog.CatalogTracker.verifyRootRegionLocation(CatalogTracker.java:487)
>        at
>org.apache.hadoop.hbase.master.HMaster.assignRootAndMeta(HMaster.java:455)
>        at
>org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:406)
>        at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:293)
>2012-06-07 12:13:12,106 INFO org.apache.hadoop.hbase.master.HMaster:
>Aborting
>2012-06-07 12:13:12,106 DEBUG org.apache.hadoop.hbase.master.HMaster:
>Stopping service threads
>
>Thanks,
>Manu S
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB