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From: Bharath Vissapragada <bharathv@cloudera.com>
Date: Wed, 27 Nov 2013 10:56:44 +0530
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 <CAFWiQHYiu8btej6SPVjjuAUXzEsiUbg4FTc43JJTUOeSxN9G+w@mail.gmail.com>
Subject: Re: Suddenly NameNode stopped responding
To: user@hbase.apache.org
Cc: "user@hadoop.apache.org" <user@hadoop.apache.org>
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It is difficult to guess the reason behind this outage without the logs.
Can we have a look at them? (pastebin). Did you configure HA for namenode?
Did it failover to standby?


On Wed, Nov 27, 2013 at 10:29 AM, Sandeep L <sandeepvreddy@outlook.com>wrote:

> Hi,
> Couple of hours back all of sudden NameNode of our production cluster got
> stopped responding, due to this our HBase also stopped responding(as
> expected).
> Here mysterious thing is we unable to get any reason for NameNode
> interruption.
> I went through all log files of NameNode and I couldn't find any exception
> in logs.
> Can someone guess what could be the probable reason for this issue?
> Any one previously faced similar issue?
> We are using hbase-0.92.1 with hadoop-1.0.2
> If you need any other information please let me know.
> Thanks,Sandeep.




-- 
Bharath Vissapragada
<http://www.cloudera.com>

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<div dir=3D"ltr">It is difficult to guess the reason behind this outage wit=
hout the logs. Can we have a look at them? (pastebin). Did you configure HA=
 for namenode? Did it failover to standby?</div><div class=3D"gmail_extra">=
<br>

<br><div class=3D"gmail_quote">On Wed, Nov 27, 2013 at 10:29 AM, Sandeep L =
<span dir=3D"ltr">&lt;<a href=3D"mailto:sandeepvreddy@outlook.com" target=
=3D"_blank">sandeepvreddy@outlook.com</a>&gt;</span> wrote:<br><blockquote =
class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid=
;padding-left:1ex">

Hi,<br>
Couple of hours back all of sudden NameNode of our production cluster got s=
topped responding, due to this our HBase also stopped responding(as expecte=
d).<br>
Here mysterious thing is we unable to get any reason for NameNode interrupt=
ion.<br>
I went through all log files of NameNode and I couldn&#39;t find any except=
ion in logs.<br>
Can someone guess what could be the probable reason for this issue?<br>
Any one previously faced similar issue?<br>
We are using hbase-0.92.1 with hadoop-1.0.2<br>
If you need any other information please let me know.<br>
Thanks,Sandeep. =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 =A0 =A0 =A0 =A0 =A0 </blockquote></div><br><br clear=3D"all"><div><br>=
</div>-- <br><div dir=3D"ltr">Bharath Vissapragada<div><a href=3D"http://ww=
w.cloudera.com" target=3D"_blank"><img src=3D"http://files.cloudera.com.s3.=
amazonaws.com/New%20Branding/cloudera-small.png"></a><br>

</div></div>
</div>

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