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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3431) Regionserver is not using the name given it by the master; double entry in master listing of servers
Date Mon, 07 Feb 2011 22:24:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12991661#comment-12991661

stack commented on HBASE-3431:

bq. Looking in hdfs, datanode generates a registration name – e.g. DS-198919343-
– and this is how it identifies itself to NN regardless. No messing w/ NN telling it what
name to use. 

J-D points out that I'm reading this code lazily (i.e. wrong), that on registration, the NN
returns a DataRegistration instance that the DN will use going forward.

> Regionserver is not using the name given it by the master; double entry in master listing
of servers
> ----------------------------------------------------------------------------------------------------
>                 Key: HBASE-3431
>                 URL: https://issues.apache.org/jira/browse/HBASE-3431
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.0
>            Reporter: stack
>            Assignee: stack
>            Priority: Blocker
>             Fix For: 0.90.1
>         Attachments: 3431-v2.txt, 3431-v3.txt, 3431-v3.txt, 3431-v4.txt, 3431.txt
> Our man Ted Dunning found the following where RS checks in with one name, the master
tells it use another name but we seem to go ahead and continue with our original name.
> In RS logs I see:
> {code}
> 2011-01-07 15:45:50,757 INFO  org.apache.hadoop.hbase.regionserver.HRegionServer [regionserver60020]:
Master passed us address to use. Was=perfnode11:60020, Now=
> {code}
> On master I see
> {code}
> 2011-01-07 15:45:38,613 INFO  org.apache.hadoop.hbase.master.ServerManager [IPC Server
handler 0 on 60000]: Registering server=,60020,1294443935414, regionCount=0, userLoad=false
> {code}
> ....
> then later
> {code}
> 2011-01-07 15:45:44,247 INFO  org.apache.hadoop.hbase.master.ServerManager [IPC Server
handler 2 on 60000]: Registering server=perfnode11,60020,1294443935414, regionCount=0, userLoad=true
> {code}
> This might be since we started letting servers register in other than with the reportStartup.

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