[ https://issues.apache.org/jira/browse/HBASE-2806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack resolved HBASE-2806. -------------------------- Hadoop Flags: [Reviewed] Fix Version/s: 0.21.0 Resolution: Fixed Thanks for the patch BenoƮt > DNS hiccups cause uncaught NPE in HServerAddress#getBindAddress > --------------------------------------------------------------- > > Key: HBASE-2806 > URL: https://issues.apache.org/jira/browse/HBASE-2806 > Project: HBase > Issue Type: Bug > Reporter: Benoit Sigoure > Assignee: Benoit Sigoure > Priority: Minor > Fix For: 0.21.0 > > Attachments: > 0001-HBASE-2806-Log-a-proper-error-message-and-don-t-NPE-.patch > > > Yesterday at the Hadoop Summit, the "HADOOP" wireless network was using a > pair of DNS servers that couldn't resolve {{localhost.}}. This prevented me > from starting HBase as the construction of the {{HMaster}} was failing with > the following rather cryptic error: > {code} > 2010-06-29 14:30:24,603 ERROR org.apache.hadoop.hbase.master.HMaster: Failed > to start master > java.lang.RuntimeException: Failed construction of Master: class > org.apache.hadoop.hbase.master.HMaster$LocalHMasternull > at > org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1217) > at > org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:112) > at org.apache.hadoop.hbase.master.HMaster.doMain(HMaster.java:1298) > at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1355) > Caused by: java.lang.reflect.InvocationTargetException > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) > at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) > at java.lang.reflect.Constructor.newInstance(Constructor.java:513) > at > org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1215) > ... 3 more > Caused by: java.lang.NullPointerException > at > org.apache.hadoop.hbase.HServerAddress.getBindAddress(HServerAddress.java:89) > at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:204) > at > org.apache.hadoop.hbase.master.HMaster$LocalHMaster.<init>(HMaster.java:1230) > ... 8 more > {code} > The {{NullPointerException}} in {{getBindAddress}} comes from the following > line of code: > {code:java} > return this.address.getAddress().getHostAddress(); > {code} > where {{getAddress()}} was returning {{null}}. > I think the code should check for this case, log an appropriate error message > (to point whoever is going to troubleshoot the problem in the right > direction), and throw something else than an NPE. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.