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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Dims,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Not that I know of; I believe that Cassandra works fine with OpenJDK. See [1] and [2].<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">From time to time, there have been questions about the supported JDK for Cassandra, a recent one (just that I happen to remember this) tries to make the case
that you must use Sun/Oracle JDK. This is not a requirement by any means. See [3].<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">To the best of my knowledge, OpenJDK is sufficient.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">-amrith<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">[1]
<a href="http://wiki.apache.org/cassandra/GettingStarted">http://wiki.apache.org/cassandra/GettingStarted</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">[2]
<a href="http://docs.datastax.com/en/cassandra/2.2/cassandra/install/installDeb.html">
http://docs.datastax.com/en/cassandra/2.2/cassandra/install/installDeb.html</a> <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">[3]
<a href="http://stackoverflow.com/questions/21487354/does-latest-cassandra-support-openjdk">
http://stackoverflow.com/questions/21487354/does-latest-cassandra-support-openjdk</a>
<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Davanum Srinivas [mailto:davanum@gmail.com]
<br>
<b>Sent:</b> Saturday, October 10, 2015 8:54 PM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions) <openstack-dev@lists.openstack.org><br>
<b>Subject:</b> Re: [openstack-dev] Scheduler proposal<o:p></o:p></span></p>
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<p class="MsoNormal">Not implying cassandra is the right option. Just curious about the assertion.<o:p></o:p></p>
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<p class="MsoNormal">-- Dims<o:p></o:p></p>
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<p class="MsoNormal">On Sat, Oct 10, 2015 at 5:53 PM, Davanum Srinivas <<a href="mailto:davanum@gmail.com" target="_blank">davanum@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Thomas,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">i am curious as well. AFAIK, cassandra works well with OpenJDK. Can you please elaborate what you concerns are for #1?<o:p></o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">Dims<o:p></o:p></p>
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<p class="MsoNormal">On Sat, Oct 10, 2015 at 5:43 PM, Joshua Harlow <<a href="mailto:harlowja@fastmail.com" target="_blank">harlowja@fastmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">I'm curious is there any more detail about #1 below anywhere online?<br>
<br>
Does cassandra use some features of the JVM that the openJDK version doesn't support? Something else?<br>
<br>
-Josh<br>
<br>
Thomas Goirand wrote:<o:p></o:p></p>
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<p class="MsoNormal">On 10/07/2015 07:36 PM, Ed Leafe wrote:<o:p></o:p></p>
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<p class="MsoNormal">Several months ago I proposed an experiment [0] to see if switching<br>
the data model for the Nova scheduler to use Cassandra as the backend<br>
would be a significant improvement as opposed to the current design<o:p></o:p></p>
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This is probably right. I don't know, I'm not an expert in Nova, or its<br>
scheduler. However, to make it possible for us (ie: downstream<br>
distributions and/or OpenStack users) to use Cassandra, you have to<br>
solve one of the below issues:<br>
<br>
1/ Cassandra developers upstream should start caring about OpenJDK, and<br>
make sure that it is also a good platform for it. They should stop<br>
caring only about the Oracle JVM.<br>
<br>
... or ...<br>
<br>
2/ Oracle should make its JVM free software.<br>
<br>
As there is no hope for any of the above, Cassandra is a no-go for<br>
downstream distributions.<br>
<br>
So, by all means, propose a new back-end, implement it, profit. But that<br>
back-end cannot be Cassandra the way it is now.<br>
<br>
Cheers,<br>
<br>
Thomas Goirand (zigo)<br>
<br>
<br>
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<p class="MsoNormal"><span class="hoenzb"><span style="color:#888888">-- <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="color:#888888">Davanum Srinivas :: <a href="https://twitter.com/dims" target="_blank">
https://twitter.com/dims</a></span><o:p></o:p></p>
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<p class="MsoNormal">Davanum Srinivas :: <a href="https://twitter.com/dims" target="_blank">
https://twitter.com/dims</a><o:p></o:p></p>
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