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Date: Fri, 4 Jul 2014 11:03:48 +0530
Message-ID: 
 <CAPRNhEPjNd5oWSh3rq_Z_xdOWun_BgYT0JLxCM3SqDaeADGCWA@mail.gmail.com>
Subject: Re: Significance of PID files
From: Vijaya Narayana Reddy Bhoomi Reddy <vijay.bhoomireddy@gmail.com>
To: Vikas srivastava <vikas_srivastav@apple.com>
Cc: user@hadoop.apache.org
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Vikas,

"Its main use is to keep one process at a time...like one one datanode at a
any host" - Can you please elaborate in a more detail?

What is meant by one process at a time? At what level does a pid file come
into picture i.e. is it at a deamon level, job level, task level etc?

Thanks
Vijay


On 4 July 2014 10:36, Vikas srivastava <vikas_srivastav@apple.com> wrote:

> Paid files used to store the pic if particular process. Its main use is to
> keep one process at a time...like one one datanode at a any host
> On Jul 4, 2014 10:00 AM, Vijaya Narayana Reddy Bhoomi Reddy <
> vijay.bhoomireddy@gmail.com> wrote:
>
> Hi,
>
> Can anyone please explain the significance of the pid files in Hadoop i.e.
> purpose and usage etc?
>
> Thanks & Regards
> Vijay
>
>

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<div dir=3D"ltr">Vikas,<div><br></div><div>&quot;<span style=3D"font-family=
:arial,sans-serif;font-size:13px">Its main use is to keep one process at a =
time...like one one datanode at a any host&quot; -=C2=A0</span>Can you plea=
se elaborate in a more detail?</div>
<div><br></div><div>What is meant by one process at a time? At what level d=
oes a pid file come into picture i.e. is it at a deamon level, job level, t=
ask level etc?</div><div><br></div><div>Thanks</div><div>Vijay</div></div>
<div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On 4 July 201=
4 10:36, Vikas srivastava <span dir=3D"ltr">&lt;<a href=3D"mailto:vikas_sri=
vastav@apple.com" target=3D"_blank">vikas_srivastav@apple.com</a>&gt;</span=
> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><p dir=3D"ltr">Paid files used to store the =
pic if particular process. Its main use is to keep one process at a time...=
like one one datanode at a any host </p>
<div class=3D"HOEnZb"><div class=3D"h5">
<div>On Jul 4, 2014 10:00 AM, Vijaya Narayana Reddy Bhoomi Reddy &lt;<a hre=
f=3D"mailto:vijay.bhoomireddy@gmail.com" target=3D"_blank">vijay.bhoomiredd=
y@gmail.com</a>&gt; wrote:<br type=3D"attribution"><blockquote style=3D"mar=
gin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir=3D"ltr">Hi,<div><br></div><div>Can anyone please explain the signi=
ficance of the pid files in Hadoop i.e. purpose and usage etc?</div><div><b=
r></div><div>Thanks &amp; Regards</div><div>Vijay</div></div>
</blockquote></div>
</div></div></blockquote></div><br></div>

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