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From stack <st...@duboce.net>
Subject Re: IPC .... from an unknown user
Date Wed, 13 May 2009 15:12:20 GMT
Its from Connection setup in the rpc code:


    public Connection(ConnectionId remoteId) throws IOException {
      if (remoteId.getAddress().isUnresolved()) {
        throw new UnknownHostException("unknown host: " +
                                       remoteId.getAddress().getHostName());
      }
      this.remoteId = remoteId;
      UserGroupInformation ticket = remoteId.getTicket();
      this.setName("IPC Client (" + socketFactory.hashCode() +") connection
to " +
          remoteId.getAddress().toString() +
          " from " + ((ticket==null)?"an unknown
user":ticket.getUserName()));
      this.setDaemon(true);
    }

The 'user' becomes part of the thread name.

The user is gotten from the 'ticket', all part of hadoop permissions.

This is TRUNK?

We're not using hadoop permissions in our client/server RPC'ing, not yet
anyways so I should clean up the message -- its a little distressing to see
that in logs.

St.Ack



On Wed, May 13, 2009 at 3:23 AM, Sasha Dolgy <sasha.dolgy@gmail.com> wrote:

> Hi,
>
> Was wondering if anyone can shed light on the following debug message I'm
> seeing:
>
> 2009-05-13 06:35:48,417 DEBUG [Thread-3] (MessageQueue.java:22)
> message.MessageQueue: Queue size = 0
> 2009-05-13 06:35:48,418 DEBUG [Thread-3] (HbaseMessageWriter.java:32)
> hbase.HbaseMessageWriter: HBase writer writing event
> 2009-05-13 06:35:48,419 DEBUG [Thread-3] (HBaseClient.java:466)
> ipc.HBaseClass: IPC Client (47) connection to /127.0.0.1:60020 from an
> unknown user sending #4403
> 2009-05-13 06:35:48,421 DEBUG [IPC Client (47) connection to /
> 127.0.0.1:60020 from an unknown user] (HBaseClient.java:501)
> ipc.HBaseClass:
> IPC Client (47) connection to /127.0.0.1:60020 from an unknown user got
> value #4403
> 2009-05-13 06:35:48,421 DEBUG [Thread-3] (HBaseRPC.java:325) ipc.HbaseRPC:
> Call: batchUpdates 2
>
> Can't find much information related to "... from an unknown user" with
> regards to IPC.  Events are being written into HBase so it's not a large
> concern for me, just curious really!
>
> --
> Sasha Dolgy
> sasha.dolgy@gmail.com
>

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