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From: Arun C Murthy <acm@hortonworks.com>
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Subject: Re: CDH4 version questions
Date: Tue, 19 Feb 2013 05:35:17 -0800
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Pls ask CDH lists.

On Feb 19, 2013, at 12:03 AM, jing wang wrote:

> Hi User,
>=20
>   We're facing the challenge of which hadoop version to choose.
>   We prefer to CDH4, but have a few qustions:
>   1.Are MRV1 and MRV2 sharing the  same hdfs? If so, can MRV1 upgrade =
to MRV2 smoothly?
>   2.If using MRV1, should our m/r code basing CDH3 be changed?
>   3.Is MRV1 stable enough to be used in production?
>=20
>=20
> Thanks & best regards,
> Jing Wang
>=20
>=20
>=20

--
Arun C. Murthy
Hortonworks Inc.
http://hortonworks.com/


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<html><head></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Pls =
ask CDH lists.<div><br><div><div>On Feb 19, 2013, at 12:03 AM, jing wang =
wrote:</div><br class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite">Hi User,<br><br>&nbsp; We're facing the challenge of which =
hadoop version to choose.<br>&nbsp; We prefer to CDH4, but have a few =
qustions:<br>&nbsp; 1.Are MRV1 and MRV2 sharing the&nbsp; same hdfs? If =
so, can MRV1 upgrade to MRV2 smoothly?<br>
&nbsp; 2.If using MRV1, should our m/r code basing CDH3 be =
changed?<br>&nbsp; <a href=3D"http://3.Is">3.Is</a> MRV1 stable enough =
to be used in production?<br><br><br>Thanks &amp; best regards,<br>Jing =
Wang<br><br><br><br>
</blockquote></div><br><div>
<span class=3D"Apple-style-span" style=3D"border-collapse: separate; =
color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; =
font-variant: normal; font-weight: normal; letter-spacing: normal; =
line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: =
0px; text-transform: none; white-space: normal; widows: 2; word-spacing: =
0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span =
class=3D"Apple-style-span" style=3D"border-collapse: separate; color: =
rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: =
normal; font-weight: normal; letter-spacing: normal; line-height: =
normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; =
text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; =
-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: =
0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div =
style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; "><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; orphans: 2; =
text-align: -webkit-auto; text-indent: 0px; text-transform: none; =
white-space: normal; widows: 2; word-spacing: 0px; =
-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: =
0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div =
style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; ">--</div><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; ">Arun C. Murthy</div><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; ">Hortonworks Inc.<br><a =
href=3D"http://hortonworks.com/">http://hortonworks.com/</a><br><br></div>=
</span></div></span></span>
</div>
<br></div></body></html>=

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