Look for a DNS /etc/hosts related suggestion mentioned here : http://search-hadoop.com/m/N45fnRFrG12 also here http://ria101.wordpress.com/2010/01/28/setup-hbase-in-pseudo-distributed-mode-and-connect-java-client/ Also clean up data from zookeeper if needed and do a restart of services , zookkper directory is here usually : ${hbase.tmp.dir}/zookeeper
PS: This issues has been reported bunch of times. Look deeper in mailing archives for changes required in /etc/hosts to get standalone hbase running. On Thu, Oct 20, 2011 at 2:24 PM, Jignesh Patel <[email protected]> wrote: > > Shrijeet > I have tried to take help from Mac group and their respond. > > "An app you wrote, or somebody else's app? > I'm not sure exactly how you want us to help, unknowne4ce8f3898fc is indeed > an invalid hostname." > > According to them it seems this is a app problem, but I haven' changed > anything and my zookeeper recognizes the IP. > > 2011-10-20 14:19:04,736 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign: > master:49232-0x133228e8a8f0000 Successfully deleted unassigned node for > region 70236052 in expected state RS_ZK_REGION_OPENED > 2011-10-20 14:19:04,737 DEBUG > org.apache.hadoop.hbase.master.handler.OpenedRegionHandler: Opened region > -ROOT-,,0.70236052 on 1*92.168.1.120*,49235,1319134727150 > 2011-10-20 14:19:04,846 ERROR org.apache.hadoop.hbase.HServerAddress: Could > not resolve the DNS name of *unknowne4ce8f3898fc* > 2011-10-20 14:19:04,847 FATAL org.apache.hadoop.hbase.master.HMaster: > Unhandled exception. Starting shutdown. > java.lang.IllegalArgumentException: hostname can't be null > > So while I am researching with them, I post their response so that if > somebody encounter same problem can direct me. > > -Jignesh > On Thu, Oct 20, 2011 at 2:54 PM, Shrijeet Paliwal > <[email protected]>wrote: > > > Jignesh, > > This > > > > http://search-hadoop.com/?q=hbase+dns&fc_project=HBase&fc_type=mail+_hash_+user > > and > > this > > http://www.plus.net/support/software/dns/changing_dns_mac.shtml > > > > As Stack pointed out in other thread , you can find mac OS communities more > > helpful for some of your how-toes. > > > > -Shrijeet > > > > On Thu, Oct 20, 2011 at 11:47 AM, Jignesh Patel <[email protected] > > >wrote: > > > > > Thanks Stack, > > > > > > Is there any link I can refer for that? I am using Lion OS x. Google > > > doesn't > > > help me much for this. > > > > > > -Jignesh > > > > > > On Thu, Oct 20, 2011 at 12:05 PM, Stack <[email protected]> wrote: > > > > > > > Fix your DNS, name resolving. > > > > St.Ack > > > > > > > > On Thu, Oct 20, 2011 at 9:02 AM, Jignesh Patel < > > [email protected]> > > > > wrote: > > > > > Hbase was working till yesterday but I am seeing following error > > today. > > > > > > > > > > 2011-10-20 11:52:02,329 ERROR org.apache.hadoop.hbase.HServerAddress: > > > > Could > > > > > not resolve the DNS name of unknowne4ce8f3898fc > > > > > 2011-10-20 11:52:02,329 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.catalog.MetaReader.readLocation(MetaReader.java:339) > > > > > at > > > > > > > > > > > > > > org.apache.hadoop.hbase.catalog.MetaReader.readMetaLocation(MetaReader.java:281) > > > > > at > > > > > > > > > > > > > > org.apache.hadoop.hbase.catalog.CatalogTracker.getMetaServerConnection(CatalogTracker.java:282) > > > > > at > > > > > > > > > > > > > > org.apache.hadoop.hbase.catalog.CatalogTracker.verifyMetaRegionLocation(CatalogTracker.java:488) > > > > > at > > > > > > > > > > > > > > org.apache.hadoop.hbase.master.HMaster.assignRootAndMeta(HMaster.java:441) > > > > > at > > > > > > > > > > > > > > org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:388) > > > > > at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:282) > > > > > at > > > > > > > > > > > > > > org.apache.hadoop.hbase.master.HMasterCommandLine$LocalHMaster.run(HMasterCommandLine.java:193) > > > > > at java.lang.Thread.run(Thread.java:680) > > > > > > > > > > > > > >
