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Date: Tue, 16 Dec 2014 15:14:01 -0600
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Subject: Re: Hadoop 2.6.0 "Server IPC version 9 cannot communicate with client
 version 4"
From: Dan Dong <dongdan39@gmail.com>
To: user@hadoop.apache.org
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I set the PATH so that hadoop points to hadoop-2.6.0/bin/hadoop, will check
further.


2014-12-16 14:52 GMT-06:00 Ted Yu <yuzhihong@gmail.com>:
>
> Where did you run the 'hadoop fs -ls' command ?
>
> Looks like hadoop version of that hadoop command is older than Hadoop 2.6.0
>
> Cheers
>
> On Tue, Dec 16, 2014 at 12:17 PM, Dan Dong <dongdan39@gmail.com> wrote:
>>
>> Hi,
>>   When I run hadoop fs -ls(or other hadoop commands) on my Hadoop 2.6.0,
>> I got the following:
>>
>> ls: Server IPC version 9 cannot communicate with client version 4
>>
>> What does this mean? What Server and what client? Did not find any error
>> messages in the log files. Thanks.
>>
>> Cheers,
>> Dan
>>
>

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<div dir=3D"ltr">I set the PATH so that hadoop points to hadoop-2.6.0/bin/h=
adoop, will check further.<br><br></div><div class=3D"gmail_extra"><br><div=
 class=3D"gmail_quote">2014-12-16 14:52 GMT-06:00 Ted Yu <span dir=3D"ltr">=
&lt;<a href=3D"mailto:yuzhihong@gmail.com" target=3D"_blank">yuzhihong@gmai=
l.com</a>&gt;</span>:<blockquote class=3D"gmail_quote" style=3D"margin:0 0 =
0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Where =
did you run the &#39;hadoop fs -ls&#39; command ?<div><br></div><div>Looks =
like hadoop version of that hadoop command is older than Hadoop 2.6.0</div>=
<div><br></div><div>Cheers</div></div><div class=3D"HOEnZb"><div class=3D"h=
5"><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue, Dec 16=
, 2014 at 12:17 PM, Dan Dong <span dir=3D"ltr">&lt;<a href=3D"mailto:dongda=
n39@gmail.com" target=3D"_blank">dongdan39@gmail.com</a>&gt;</span> wrote:<=
blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px=
 #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div><div><div>Hi,<br></div>=
=C2=A0 When I run hadoop fs -ls(or other hadoop commands) on my Hadoop 2.6.=
0, I got the following:<br><br>ls: Server IPC version 9 cannot communicate =
with client version 4<br><br></div>What does this mean? What Server and wha=
t client? Did not find any error messages in the log files. Thanks.<br><br>=
</div>Cheers,<br>Dan<br></div>
</blockquote></div></div>
</div></div></blockquote></div></div>

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