I use IBM JVM 7, it is free, and for VMs over 8 GB it has a garbage collection policy that makes it almost pause-less. We also use some security libraries that eliminates use of other libs that you need for Oracle.
On Thu, Apr 4, 2013 at 12:59 AM, Edward Capriolo <edlinuxg...@gmail.com>wrote: > Hey guys. what gives! > Apparently Cassandra ran on 1.7 like 5 years ago. Was their a regression? > > jk > > https://github.com/jbellis/helenus > > Installation > ------------ > * Please use jdk 1.7; Cassandra will run with 1.6 but > frequently core dumps on quad-core machines > * Unpack the tar ball: > > > > > On Wed, Feb 6, 2013 at 12:56 PM, Wei Zhu <wz1...@yahoo.com> wrote: > >> Anyone has first hand experience with Zing JVM which is claimed to be >> pauseless? How do they charge, per CPU? >> >> Thanks >> -Wei >> ------------------------------ >> *From:* Edward Capriolo <edlinuxg...@gmail.com> >> *To:* user@cassandra.apache.org >> *Sent:* Wednesday, February 6, 2013 7:07 AM >> *Subject:* Re: Why do Datastax docs recommend Java 6? >> >> Oracle already did this once, It was called jrockit :) >> http://www.oracle.com/technetwork/middleware/jrockit/overview/index.html >> >> Typically oracle acquires they technology and then the bits are merged >> with the standard JVM. >> >> On Wed, Feb 6, 2013 at 2:13 AM, Viktor Jevdokimov < >> viktor.jevdoki...@adform.com> wrote: >> >> I would prefer Oracle to own an Azul’s Zing JVM over any other (GC) to >> provide it for free for anyone :) >> >> Best regards / Pagarbiai >> *Viktor Jevdokimov* >> Senior Developer >> >> Email: viktor.jevdoki...@adform.com >> Phone: +370 5 212 3063, Fax +370 5 261 0453 >> J. Jasinskio 16C, LT-01112 Vilnius, Lithuania >> Follow us on Twitter: @adforminsider<http://twitter.com/#!/adforminsider> >> Take a ride with Adform's Rich Media Suite<http://vimeo.com/adform/richmedia> >> [image: Adform News] <http://www.adform.com/> >> [image: Adform awarded the Best Employer 2012] >> <http://www.adform.com/site/blog/adform/adform-takes-top-spot-in-best-employer-survey/> >> >> Disclaimer: The information contained in this message and attachments is >> intended solely for the attention and use of the named addressee and may be >> confidential. If you are not the intended recipient, you are reminded that >> the information remains the property of the sender. You must not use, >> disclose, distribute, copy, print or rely on this e-mail. If you have >> received this message in error, please contact the sender immediately and >> irrevocably delete this message and any copies. >> >> *From:* jef...@gmail.com [mailto:jef...@gmail.com] >> *Sent:* Wednesday, February 06, 2013 02:23 >> *To:* user@cassandra.apache.org >> *Subject:* Re: Why do Datastax docs recommend Java 6? >> >> Oracle now owns the sun hotspot team, which is inarguably the highest >> powered java vm team in the world. Its still really the epicenter of all >> java vm development. >> Sent from my Verizon Wireless BlackBerry >> ------------------------------ >> *From: *"Ilya Grebnov" <i...@metricshub.com> >> *Date: *Tue, 5 Feb 2013 14:09:33 -0800 >> *To: *<user@cassandra.apache.org> >> *ReplyTo: *user@cassandra.apache.org >> *Subject: *RE: Why do Datastax docs recommend Java 6? >> >> Also, what is particular reason to use Oracle JDK over Open JDK? Sorry, >> I could not find this information online. >> >> Thanks, >> Ilya >> *From:* Michael Kjellman >> [mailto:mkjell...@barracuda.com<mkjell...@barracuda.com>] >> >> *Sent:* Tuesday, February 05, 2013 7:29 AM >> *To:* user@cassandra.apache.org >> *Subject:* Re: Why do Datastax docs recommend Java 6? >> >> There have been tons of threads/convos on this. >> >> In the early days of Java 7 it was pretty unstable and there was pretty >> much no convincing reason to use Java 7 over Java 6. >> >> Now that Java 7 has stabilized and Java 6 is EOL it's a reasonable >> decision to use Java 7 and we do it in production with no issues to speak >> of. >> >> That being said there was one potential situation we've seen as a >> community where bootstrapping new node was using 3x more CPU and getting >> significantly less throughput. However, reproducing this consistently never >> happened AFAIK. >> >> I think until more people use Java 7 in production and prove it doesn't >> cause any additional bugs/performance issues Datastax will update their >> docs. Until now I'd say it's a safe bet to use Java 7 with Vanilla C* >> 1.2.1. I hope this helps! >> >> Best, >> Michael >> >> *From: *Baron Schwartz <ba...@xaprb.com> >> *Reply-To: *"user@cassandra.apache.org" <user@cassandra.apache.org> >> *Date: *Tuesday, February 5, 2013 7:21 AM >> *To: *"user@cassandra.apache.org" <user@cassandra.apache.org> >> *Subject: *Why do Datastax docs recommend Java 6? >> >> The Datastax docs repeatedly say (e.g. >> http://www.datastax.com/docs/1.2/install/install_jre) that Java 7 is not >> recommended, but they don't say why. It would be helpful to know this. Does >> anyone know? >> >> The same documentation is referenced from the Cassandra wiki, for >> example, http://wiki.apache.org/cassandra/GettingStarted >> >> - Baron >> >> >> >> >> > -- "Life is what happens while you are making other plans." ~ John Lennon
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