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<p><font size="2" face="sans-serif">Mike,</font><br>
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<font size="2" face="sans-serif">Thanks for you clarification. I'm interested in how to enable the following combinations. </font><br>
<font size="2" face="sans-serif">for case 1, can we do it without sending the HTTP head 'X-Newest'?</font><br>
<font size="2" face="sans-serif">for case 2, how to enable it?</font>
<ul type="disc" style="padding-left: 18pt">
<li><font size="2" face="sans-serif">N=3, W=2, R=2 (Strong Consistence Mode)</font>
<li><font size="2" face="sans-serif">N=3, W=3, R=1 (Strict Consistence Mode)</font></ul>
<font size="2" face="sans-serif"><br>
</font><font size="1" face="serif"><b>Best Regards, </b></font><font size="1" face="serif"><br>
<br>
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<ul style="padding-left: 0pt"><font size="1" face="serif"><b>Edward Zhang(张华)</b></font><font size="1" face="serif"><br>
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<img width="16" height="16" src="cid:2__=C7BBF042DFB71D068f9e8a93df938@cn.ibm.com" border="0" alt="Inactive hide details for Michael Barton ---12/11/2012 02:31:16 PM---Michael Barton <mike-launchpad@weirdlooking.com>"><font size="2" color="#424282" face="sans-serif">Michael Barton ---12/11/2012 02:31:16 PM---Michael Barton <mike-launchpad@weirdlooking.com></font><br>
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<ul style="padding-left: 72pt"><font size="1" face="sans-serif"><b>Michael Barton <mike-launchpad@weirdlooking.com></b></font><font size="1" face="sans-serif"> </font><br>
<font size="1" face="sans-serif">Sent by: palrich@gmail.com</font>
<p><font size="1" face="sans-serif">12/11/2012 02:31 PM</font></ul>
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<ul style="padding-left: 7pt"><font size="1" face="sans-serif">Hua ZZ Zhang/China/IBM@IBMCN, </font></ul>
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<ul style="padding-left: 7pt"><font size="1" face="sans-serif">Alex Yang <alex890714@gmail.com>, "openstack@lists.launchpad.net" <openstack@lists.launchpad.net>, Hai HJ Ji/China/IBM@IBMCN</font></ul>
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<ul style="padding-left: 7pt"><font size="1" face="sans-serif">Re: [Openstack] [swift] how to configure NWR policy</font></ul>
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<font size="3" face="serif">Does any of our documentation say NRW are directly configurable? It's not really quite that simple.</font><br>
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<font size="3" face="serif">N is a property of the cluster, chosen when you build the ring.</font><br>
<font size="3" face="serif">W is always a simple majority of N.</font><br>
<font size="3" face="serif">R is generally 1 (eventually consisten reads), but the client can request it be bumped to N (> highly consistent reads) using X-Newest.</font><br>
<br>
<font size="3" face="serif">But then there's stuff like we provide RYW consistency on default reads, which can't really be modeled by NRW notation.</font><br>
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<font size="3" face="serif">- Mike</font><br>
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<font size="3" face="serif">On Mon, Dec 10, 2012 at 9:47 PM, Hua ZZ Zhang <</font><a href="mailto:zhuadl@cn.ibm.com" target="_blank"><font size="3" color="#0000FF" face="serif"><u>zhuadl@cn.ibm.com</u></font></a><font size="3" face="serif">> wrote:</font>
<ul style="padding-left: 9pt"><font size="3" face="sans-serif">Alex, that make sense to me. thanks a lot. :-)<br>
</font><font size="1" face="serif"><b><br>
Best Regards, </b></font><font size="1" face="serif"><br>
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</font><font size="3" color="#424282" face="sans-serif">Alex Yang ---12/11/2012 11:37:24 AM---Alex Yang <</font><a href="mailto:alex890714@gmail.com" target="_blank"><font size="3" color="#0000FF" face="sans-serif"><u>alex890714@gmail.com</u></font></a><font size="3" color="#424282" face="sans-serif">></font><font size="3" face="serif"><br>
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<ul style="padding-left: 36pt"><font size="1" face="sans-serif"><b>Alex Yang <</b></font><a href="mailto:alex890714@gmail.com" target="_blank"><font size="1" color="#0000FF" face="sans-serif"><b><u>alex890714@gmail.com</u></b></font></a><font size="1" face="sans-serif"><b>></b></font><font size="1" face="sans-serif"> </font><font size="3" face="serif"> </font>
<p><font size="1" face="sans-serif">12/11/2012 11:37 AM</font></ul>
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<ul style="padding-left: 36pt"><font size="1" face="sans-serif">Hua ZZ Zhang/China/IBM@IBMCN, </font></ul>
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<ul style="padding-left: 36pt"><font size="1" face="sans-serif">"</font><a href="mailto:openstack@lists.launchpad.net" target="_blank"><font size="1" color="#0000FF" face="sans-serif"><u>openstack@lists.launchpad.net</u></font></a><font size="1" face="sans-serif">" <</font><a href="mailto:openstack@lists.launchpad.net" target="_blank"><font size="1" color="#0000FF" face="sans-serif"><u>openstack@lists.launchpad.net</u></font></a><font size="1" face="sans-serif">>, Hai HJ Ji/China/IBM@IBMCN</font></ul>
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<ul style="padding-left: 36pt"><font size="1" face="sans-serif">Re: [Openstack] [swift] how to configure NWR policy</font></ul>
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<font size="3" face="sans-serif"><br>
Hi, Zhang,<br>
Just add 'X-Newest: Ture' in the HTTP GET request.<br>
</font><font size="3" face="serif"><br>
</font><font size="3" face="sans-serif"><br>
2012/12/11 Hua ZZ Zhang <</font><a href="mailto:zhuadl@cn.ibm.com" target="_blank"><font size="3" color="#0000FF" face="sans-serif"><u>zhuadl@cn.ibm.com</u></font></a><font size="3" face="sans-serif">></font><font size="3" face="serif"> </font>
<ul style="padding-left: 36pt"><font size="3" face="sans-serif">Hi all,<br>
<br>
I have a question about swift configuration for NWR policy. According to some documents of Swift, NWR is configurable. The general configuration is: N=3, W=2, R=1 or 2. <br>
Swift can provide both models of consistency: strong and eventual. But I can't find where to configure this option. <br>
<br>
Any suggestion is appreciated!</font><font size="1" face="serif"><b><br>
<br>
Best Regards, </b></font><font size="3" face="serif"><br>
<br>
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<ul style="padding-left: 36pt"><font size="1" face="serif"><b>Edward Zhang(张华)</b></font><font size="1" face="serif"><br>
IBM China Software Development Lab</font></ul>
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