[ http://issues.apache.org/jira/browse/HADOOP-375?page=comments#action_12423556 ] Doug Cutting commented on HADOOP-375: -------------------------------------
Sorry, this has conflicts with HADOOP-321, which I just committed. Can you please regenerate this? Thanks. > Introduce a way for datanodes to register their HTTP info ports with the > NameNode > --------------------------------------------------------------------------------- > > Key: HADOOP-375 > URL: http://issues.apache.org/jira/browse/HADOOP-375 > Project: Hadoop > Issue Type: Bug > Components: dfs > Affects Versions: 0.5.0 > Reporter: Devaraj Das > Assigned To: Devaraj Das > Attachments: content_browsing.new.patch, content_browsing.new.patch, > content_browsing.new.patch > > > If we have multiple datanodes within a single machine the Jetty servers > (other than the first one) won't be able to bind to the fixed HTTP port. So, > one solution is to have the datanodes pick a free port (starting from a > configured port value) and then inform namenode about it so that the namenode > can then do redirects, etc. > Johan Oskarson reported this problem. > If a computer have a second dfs data dir in the config it doesn't start > properly because of: > Exception in thread "main" java.io.IOException: Problem starting http server > at > org.apache.hadoop.mapred.StatusHttpServer.start(StatusHttpServer.java:182) > at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:170) > at > org.apache.hadoop.dfs.DataNode.makeInstanceForDir(DataNode.java:1045) > at org.apache.hadoop.dfs.DataNode.run(DataNode.java:999) > at org.apache.hadoop.dfs.DataNode.runAndWait(DataNode.java:1015) > at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1066) > Caused by: org.mortbay.util.MultiException[java.net.BindException: Address > already in use] > at org.mortbay.http.HttpServer.doStart(HttpServer.java:731) > at org.mortbay.util.Container.start(Container.java:72) > at > org.apache.hadoop.mapred.StatusHttpServer.start(StatusHttpServer.java:159) > ... 5 more -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
