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Subject: Re: Using UserGroupInformation in multithread process
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From: Zhijie Shen <zshen@hortonworks.com>
To: "user@hadoop.apache.org" <user@hadoop.apache.org>
Thread-Topic: Using UserGroupInformation in multithread process
Thread-Index: AQHQqlom8hVbvDSCrk6h4iE3Z1YTN520QBHx
Date: Fri, 19 Jun 2015 20:14:04 +0000
Message-ID: <1434744844637.14458@hortonworks.com>
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Do you mean TGT tickets or tokens? Anyway, they should be across threads. D=
id you check if you're using the same UGI object in different threads?


Thanks,

Zhijie

________________________________
From: Gaurav Gupta <gaurav.gopi123@gmail.com>
Sent: Thursday, June 18, 2015 11:35 PM
To: user@hadoop.apache.org
Subject: Using UserGroupInformation in multithread process

I am using UserGroupInformation to get the Kerberos tokens.
I have a process in a Yarn container that is spawning another thread (slave=
). I am renewing the Kerberos Tokens in master thread but the slave thread =
is still using older Tokens.
Are tokens not shared across threads in same JVM?

Thanks
Gaurav

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<p>Do you mean TGT tickets or tokens? Anyway, they should be across threads=
. Did you check if you're using the same UGI object in different threads?<b=
r>
</p>
<p><br>
</p>
<p>Thanks,<br>
</p>
<p>Zhijie<br>
</p>
<div style=3D"color: rgb(33, 33, 33);">
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" co=
lor=3D"#000000" style=3D"font-size:11pt"><b>From:</b> Gaurav Gupta &lt;gaur=
av.gopi123@gmail.com&gt;<br>
<b>Sent:</b> Thursday, June 18, 2015 11:35 PM<br>
<b>To:</b> user@hadoop.apache.org<br>
<b>Subject:</b> Using UserGroupInformation in multithread process</font>
<div>&nbsp;</div>
</div>
<div>
<div dir=3D"ltr">I am using UserGroupInformation to get the Kerberos tokens=
.
<div>I have a process in a Yarn container that is spawning another thread (=
slave). I am renewing the Kerberos Tokens in master thread but the slave th=
read is still using older Tokens.</div>
<div>Are tokens not shared across threads in same JVM?</div>
<div><br>
</div>
<div>Thanks</div>
<div>Gaurav</div>
</div>
</div>
</div>
</body>
</html>

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