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Thread-Topic: Topology script frequency
Thread-Index: AQHOD6dE5+Or9IQtSUaRYkf4y7reDJiDlQGu
Date: Thu, 21 Feb 2013 02:26:21 +0000
Message-ID: <DA8340397F7BAE41B8102757834CEB1230D8E438@EX-MBOX1.xiaomi.net>
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<div style=3D"direction: ltr;font-family: Tahoma;color: #000000;font-size: =
10pt;">I'd submitted a patch(HADOOP-8928.txt) to reload topology config&nbs=
p;dynamically like &quot;hdfs dfsadmin -refreshTopology&quot; style several=
 months before, see HADOOP-8928 for more details.<br>
<br>
<div>
<div style=3D"font-family: Tahoma; font-size: 13px;">Regards,<br>
Liang<br>
</div>
</div>
<div style=3D"font-family: Times New Roman; color: rgb(0, 0, 0); font-size:=
 16px;">
<hr tabindex=3D"-1">
<div style=3D"direction: ltr;" id=3D"divRpF168154"><font color=3D"#000000" =
face=3D"Tahoma" size=3D"2"><b>=B7=A2=BC=FE=C8=CB:</b> Chris Embree [cembree=
@gmail.com]<br>
<b>=B7=A2=CB=CD=CA=B1=BC=E4:</b> 2013=C4=EA2=D4=C221=C8=D5 4:17<br>
<b>=CA=D5=BC=FE=C8=CB:</b> user@hadoop.apache.org<br>
<b>=D6=F7=CC=E2:</b> Topology script frequency<br>
</font><br>
</div>
<div></div>
<div>I've checked all of the documentation, books and google searches I can=
 think of....
<div><br>
</div>
<div>I have a working topology script. &nbsp;I have dynamic IP's. &nbsp;I h=
ave an automated process to update the rack data when a datanode changes IP=
.</div>
<div><br>
</div>
<div>What I don't have is any clue as to when the NN reads this script. &nb=
sp;If I execute it right now with 10.10.10.10 it'll return /dc1/rack3 &nbsp=
;When I run hadoop balancer I see /default/rack/<a href=3D"http://10.10.10.=
10:50010" target=3D"_blank">10.10.10.10:50010</a></div>
<div>I really don't want to have to restart the NN for IP changes to be not=
iced.</div>
<div><br>
</div>
<div>Any brilliant insights?</div>
<div><br>
</div>
<div>Thanks</div>
<div>Chris</div>
</div>
</div>
</div>
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