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Subject: Re: Stuck Job - how should I troubleshoot?
From: Serge Blazhievsky <hadoop.ca@gmail.com>
In-Reply-To: 
 <DA50D3A1C27F3D40A59007AED8132BD8013EE69F4B@dc-dag2.bateswhite.com>
Date: Sun, 20 Apr 2014 07:46:41 -0700
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 <DA50D3A1C27F3D40A59007AED8132BD8013EE69F4B@dc-dag2.bateswhite.com>
To: "user@hadoop.apache.org" <user@hadoop.apache.org>


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It could be a case that some step of the job takes particularly long. Take a=
 look at counters. If they are changing, job is not stuck just takes long ti=
me.=20

Once you know that you could either debug deadlock or apply optimization tec=
hniques=20


Serge

Sent from my iPhone

> On Apr 20, 2014, at 4:12, Clay McDonald <stuart.mcdonald@bateswhite.com> w=
rote:
>=20
> Hello all. Please see the attached screenshot. I have a job that is stuck.=
 I=E2=80=99ve looked in logs but don=E2=80=99t see anything that jumps out a=
t me. How should I trouble shoot this? Thanks, Clay
> <stuck_mapreduce_job.jpg>

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>It could be a case that some step of t=
he job takes particularly long. Take a look at counters. If they are changin=
g, job is not stuck just takes long time.&nbsp;</div><div><br></div><div>Onc=
e you know that you could either debug deadlock or apply optimization techni=
ques&nbsp;</div><div><br></div><div><br></div><div>Serge<br><br>Sent from my=
 iPhone</div><div><br>On Apr 20, 2014, at 4:12, Clay McDonald &lt;<a href=3D=
"mailto:stuart.mcdonald@bateswhite.com">stuart.mcdonald@bateswhite.com</a>&g=
t; wrote:<br><br></div><blockquote type=3D"cite"><div>

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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ari=
al&quot;,&quot;sans-serif&quot;">Hello all. Please see the attached screensh=
ot. I have a job that is stuck. I=E2=80=99ve looked in logs but don=E2=80=99=
t see anything that jumps out at me. How should I trouble shoot this?
 Thanks, Clay <o:p></o:p></span></p>
</div>


</div></blockquote><blockquote type=3D"cite"><div>&lt;stuck_mapreduce_job.jp=
g&gt;</div></blockquote></body></html>=

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