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) > > > > > > > > > >
