Return-Path: X-Original-To: apmail-hadoop-user-archive@minotaur.apache.org Delivered-To: apmail-hadoop-user-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 9A5EDDC50 for ; Wed, 8 Aug 2012 07:16:25 +0000 (UTC) Received: (qmail 15222 invoked by uid 500); 8 Aug 2012 07:03:25 -0000 Delivered-To: apmail-hadoop-user-archive@hadoop.apache.org Received: (qmail 14780 invoked by uid 500); 8 Aug 2012 07:03:18 -0000 Mailing-List: contact user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hadoop.apache.org Delivered-To: mailing list user@hadoop.apache.org Received: (qmail 14731 invoked by uid 99); 8 Aug 2012 07:03:16 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Aug 2012 07:03:16 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=FSL_RCVD_USER,HTML_MESSAGE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [198.182.60.75] (HELO vaxjo.synopsys.com) (198.182.60.75) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Aug 2012 07:03:08 +0000 Received: from mailhost.synopsys.com (mailhost1.synopsys.com [10.12.238.239]) by vaxjo.synopsys.com (Postfix) with ESMTP id D2E05E1E2 for ; Wed, 8 Aug 2012 00:02:46 -0700 (PDT) Received: from mailhost.synopsys.com (localhost [127.0.0.1]) by mailhost.synopsys.com (Postfix) with ESMTP id B69DE6AC for ; Wed, 8 Aug 2012 00:02:46 -0700 (PDT) Received: from us01wxhtc1.internal.synopsys.com (us01wxhtc1.synopsys.com [10.15.75.39]) by mailhost.synopsys.com (Postfix) with ESMTP id AFDCE6AB for ; Wed, 8 Aug 2012 00:02:46 -0700 (PDT) Received: from DE02WEHTC1.internal.synopsys.com (10.225.19.83) by us01wxhtc1.internal.synopsys.com (10.15.75.39) with Microsoft SMTP Server (TLS) id 8.3.213.0; Wed, 8 Aug 2012 00:02:35 -0700 Received: from DE02WEMBX1.internal.synopsys.com ([fe80::89da:3780:164:1530]) by DE02WEHTC1.internal.synopsys.com ([::1]) with mapi id 14.02.0298.004; Wed, 8 Aug 2012 09:02:24 +0200 From: Alan Miller To: "user@hadoop.apache.org" Subject: datanode startup before hostname is resovable Thread-Topic: datanode startup before hostname is resovable Thread-Index: Ac11M8dE5rX+AMxWRFe83VKL4346vA== Date: Wed, 8 Aug 2012 07:02:23 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.96.8.98] Content-Type: multipart/alternative; boundary="_000_D97CE8482B74EE4E94D2D3A94B2E15D903CA61DE02WEMBX1interna_" MIME-Version: 1.0 --_000_D97CE8482B74EE4E94D2D3A94B2E15D903CA61DE02WEMBX1interna_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable For development I run CDH4 on my local machine but I notice that I have to manually start the datanode (sudo service hadoop-hdfs-datanode start) after each reboot. Looks like the datanode process is getting started before my DHCP address I= s resolvable. From: /var/log/hadoop-hdfs/hadoop-hdfs-datanode-myhost.log 2012-08-08 08:44:01,171 INFO org.apache.hadoop.hdfs.server.datanode.Dat= aNode: STARTUP_MSG: .... STARTUP_MSG: Starting DataNode STARTUP_MSG: host =3D java.net.UnknownHostException: myhostname: myho= stname .... 2012-08-08 08:44:02,253 ERROR org.apache.hadoop.hdfs.server.datanode.Da= taNode: Exception in secureMain java.net.UnknownHostException: myhostname: = myhostname SHUTDOWN_MSG: Shutting down DataNode at java.net.UnknownHostException: = myhostname: myhostname I'm on Fedora 16/x86_64. Regards, Alan --_000_D97CE8482B74EE4E94D2D3A94B2E15D903CA61DE02WEMBX1interna_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

For development I run CDH4 on my local machine  = ;but I notice that I have to

manually start the datanode (sudo service hadoop-hdf= s-datanode start)

after each reboot.

 

Looks like the datanode process is getting started b= efore my DHCP address Is resolvable.

From:  /var/log/hadoop-hdfs/hadoop-hdfs-datanod= e-myhost.log

    2012-08-08 08:44:01,171 INFO= org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:

    ….

    STARTUP_MSG: Starting DataNode

    STARTUP_MSG:   host =3D= java.net.UnknownHostException: myhostname: myhostname

    ….

    2012-08-08 08:44:02,253 ERROR org= .apache.hadoop.hdfs.server.datanode.DataNode: Exception in secureMain java.= net.UnknownHostException: myhostname: myhostname

    SHUTDOWN_MSG: Shutting down DataN= ode at java.net.UnknownHostException: myhostname: myhostname

 

 

I’m on Fedora 16/x86_64.

 

Regards,

Alan

 

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