We are about to commit it to 0.20.4 since we voted on it breaking RPC compatibility.
In this case the DNS lookup gives a different address, so the master treats it as a different region server and gives it a new startcode. In the web ui the two lines should have the same address, but not the same code at the end. J-D On Thu, Mar 11, 2010 at 10:33 AM, Ted Yu <yuzhih...@gmail.com> wrote: > 0.20.5 seems a bit far in the future :-) > > What I couldn't explain is that why serversToServerInfo, backed by > ConcurrentHashMap, would contain two entries with same key - X.com. > > On Thu, Mar 11, 2010 at 10:19 AM, Jean-Daniel Cryans > <jdcry...@apache.org>wrote: > >> Bringing the discussion in hbase-user >> >> That usually happens after a DNS hiccup. There's a fix for that in >> https://issues.apache.org/jira/browse/HBASE-2174 >> >> J-D >> >> On Wed, Mar 10, 2010 at 1:41 PM, Ted Yu <yuzhih...@gmail.com> wrote: >> > I noticed two lines for the same region server on HBase Master page: >> > X.com:60030 1268160765854 requests=0, regions=16, usedHeap=1068, >> > maxHeap=6127 >> > X.com:60030 1268250726442 requests=21, regions=9, usedHeap=1258, >> > maxHeap=6127 >> > >> > I checked there is only one >> > org.apache.hadoop.hbase.regionserver.HRegionServer instance running on >> that >> > machine. >> > >> > This is from region server log: >> > >> > 2010-03-10 13:25:38,157 ERROR [IPC Server handler 43 on 60020] >> > regionserver.HRegionServer(844): >> > org.apache.hadoop.hbase.NotServingRegionException: >> ruletable,,1268083966723 >> > at >> > >> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2307) >> > at >> > >> org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:1784) >> > at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source) >> > at >> > >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >> > at java.lang.reflect.Method.invoke(Method.java:597) >> > at >> > org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:648) >> > at >> > org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915) >> > 2010-03-10 13:25:38,189 ERROR [IPC Server handler 0 on 60020] >> > regionserver.HRegionServer(844): >> > org.apache.hadoop.hbase.NotServingRegionException: >> ruletable,,1268083966723 >> > at >> > >> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2307) >> > at >> > >> org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:1784) >> > at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source) >> > at >> > >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >> > at java.lang.reflect.Method.invoke(Method.java:597) >> > at >> > org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:648) >> > at >> > org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915) >> > >> > If you know how to troubleshoot, please share. >> > >> >
