Re: Nodetool hanging - Cassandra 3.10, Oracle Java 1.8.0_131

M To: "user@cassandra.apache.org" <user@cassandra.apache.org> Subject: Re: Nodetool hanging - Cassandra 3.10, Oracle Java 1.8.0_131 My first thought is restart cassandra and monitor its log to make sure it starts up. On Thu, Jan 25, 2018 at 9:15 AM Jeff Jirsa <jji...@gmail

Re: Nodetool hanging - Cassandra 3.10, Oracle Java 1.8.0_131

r@cassandra.apache.org> Subject: Re: Nodetool hanging - Cassandra 3.10, Oracle Java 1.8.0_131 My first thought is restart cassandra and monitor its log to make sure it starts up. On Thu, Jan 25, 2018 at 9:15 AM Jeff Jirsa <jji...@gmail.com<mailto:jji...@gmail.com>> wrote: Can you t

Re: Nodetool hanging - Cassandra 3.10, Oracle Java 1.8.0_131

My first thought is restart cassandra and monitor its log to make sure it starts up. On Thu, Jan 25, 2018 at 9:15 AM Jeff Jirsa wrote: > Can you telnet to the 7199 port? > > -- > Jeff Jirsa > > > On Jan 25, 2018, at 8:00 AM, James Lovato > wrote: > >

Re: Nodetool hanging - Cassandra 3.10, Oracle Java 1.8.0_131

Can you telnet to the 7199 port? -- Jeff Jirsa > On Jan 25, 2018, at 8:00 AM, James Lovato wrote: > > I have a 15 node cluster, 5 in each of 3 dcs. One host just recently started > hanging doing any `nodetool` requests. I’ve enabled remote JMX on all these >

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

On Monday, February 13, 2017, Brice Dutheil wrote: > The Android battle is another thing that I wouldn't consider for OracleJDK > / OpenJDK. > While I do like what Google did from a technical point of view, Google may > have overstepped fair use (or not – I don't know).

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

The Android battle is another thing that I wouldn't consider for OracleJDK / OpenJDK. While I do like what Google did from a technical point of view, Google may have overstepped fair use (or not – I don't know). Anyway Sun didn't like what Google did, they probably considered going to court at

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

are people actually trying to imply that Google is less evil than oracle? what is this shill fest On 12 Feb. 2017 8:24 am, "Kant Kodali" wrote: Saw this one today... https://news.ycombinator.com/item?id=13624062 On Tue, Jan 3, 2017 at 6:27 AM, Eric Evans

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

Saw this one today... https://news.ycombinator.com/item?id=13624062 On Tue, Jan 3, 2017 at 6:27 AM, Eric Evans wrote: > On Mon, Jan 2, 2017 at 2:26 PM, Edward Capriolo > wrote: > > Lets be clear: > > What I am saying is avoiding being loose

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

On Mon, Jan 2, 2017 at 2:26 PM, Edward Capriolo wrote: > Lets be clear: > What I am saying is avoiding being loose with the word "free" > > https://en.wikipedia.org/wiki/Free_software_license > > Many things with the JVM are free too. Most importantly it is free to use. > >

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

upstream was >>>>>> Acunu. They had released a modified Linux Kernel with a modified Apache >>>>>> Cassandra. http://cloudtweaks.com/2011/02/data-storage-start >>>>>> up-acunu-raises-3-6-million-to-launch-its-first-product/. That >>>>>&

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

't how to read any of this. It sounds like you're saying that a >>>>> JVM is something that cannot be produced as a Free Software project," >>>>> >>>>> What I am saying is something like the JVM "could" be produced as a >>>>

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

cluding vms or runtime to use them) today >>>> including Java, C#, Go, Swift are developed by the largest tech companies >>>> in the world, and as such I do believe a platform would be viable. >>>> Specifically I believe without Oracle driving Java OpenJDK would not be

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

>> >>> There are two specific reasons. >>> 1) I do not see large costly multi-year initiatives like G1 happening >>> 2) Without guidance/leadership that sun/oracle I do not see new features >>> that change the language like lambda's and try multi-catch happe

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

ake compiling working lambda code on linux GCC >> to microsoft visual studio and having it not compile. In my opinion, Java >> only wins because as a platform it is very portable as both source and >> binary code. Without leadership on that front I believe that over time the >> la

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

Does this discussion really make sense any more? To me it seems it turned opinionated and religious. From my point of view anything that has to be said was said. Am 02.01.2017 21:27 schrieb "Edward Capriolo" : > > > On Mon, Jan 2, 2017 at 11:56 AM, Eric Evans

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

On Mon, Jan 2, 2017 at 11:56 AM, Eric Evans wrote: > On Fri, Dec 23, 2016 at 9:15 PM, Edward Capriolo > wrote: > > "I don't really have any opinions on Oracle per say, but Cassandra is a > > Free Software project and I would prefer that we not

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

On Fri, Dec 23, 2016 at 9:15 PM, Edward Capriolo wrote: > "I don't really have any opinions on Oracle per say, but Cassandra is a > Free Software project and I would prefer that we not depend on > commercial software, (and that's kind of what we have here, an > implicit

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

> > While the situation has enhanced over the past months I’ll still double > check before using any OpenJDK builds. > ​ > > -- Brice > > On Wed, Dec 21, 2016 at 5:08 PM, Voytek Jarnot <voytek.jar...@gmail.com> > wrote: > > Reading that article the only co

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

gt;>>>>>> but not sure as I couldn’t find evidence on this; on this signatories >>>>>>> list >>>>>>> again there’s an individual – Emmanuel Bourg – who is related to >>>>>>> Debian <https://lists.debian.org/debian-

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

sed for each build. >>>>>> >>>>>> Bad OpenJDK intermediary builds, i.e without TCK compliance tests, is >>>>>> a reality >>>>>> <https://github.com/docker-library/openjdk/commit/00a9c5c080f2a5fd1510bc0716db7afe06cbd017> &g

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

gt; Bad OpenJDK intermediary builds, i.e without TCK compliance tests, is >>>>> a reality >>>>> <https://github.com/docker-library/openjdk/commit/00a9c5c080f2a5fd1510bc0716db7afe06cbd017> >>>>> . >>>>> >>>>> While the situatio

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

>>>> ​ >>>> >>>> -- Brice >>>> >>>> On Wed, Dec 21, 2016 at 5:08 PM, Voytek Jarnot <voytek.jar...@gmail.com >>>> > wrote: >>>> >>>>> Reading that article the only conclusion I can reach (unless I'm >>

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

jar...@gmail.com> >>> wrote: >>> >>>> Reading that article the only conclusion I can reach (unless I'm >>>> misreading) is that all the stuff that was never free is still not free - >>>> the change is that Oracle may actually be interested

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

tek.jar...@gmail.com> >> wrote: >> >>> Reading that article the only conclusion I can reach (unless I'm >>> misreading) is that all the stuff that was never free is still not free - >>> the change is that Oracle may actually be interested in the fact that some >

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

ess I'm >> misreading) is that all the stuff that was never free is still not free - >> the change is that Oracle may actually be interested in the fact that some >> are using non-free products for free. >> >> Pretty much a non-story, it seems like. >>

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

:55 PM, Kant Kodali <k...@peernova.com> wrote: > >> Looking at this http://www.theregister.co.uk/2016/12/16/oracle_targets_ >> java_users_non_compliance/?mt=1481919461669 I don't know why Cassandra >> recommends Oracle JVM? >> >> JVM is a great piece of software but I would like

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

. On Tue, Dec 20, 2016 at 11:55 PM, Kant Kodali <k...@peernova.com> wrote: > Looking at this http://www.theregister.co.uk/2016/12/16/oracle_ > targets_java_users_non_compliance/?mt=1481919461669 I don't know why > Cassandra recommends Oracle JVM? > > JVM is a great piece of soft

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

On 12/21/2016 08:38 AM, Eric Evans wrote: > I don't really have any opinions on Oracle per say, but Cassandra is a > Free Software project and I would prefer that we not depend on > commercial software, (and that's kind of what we have here, an > implicit dependency). Just a bit of clarification.

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

On Tue, Dec 20, 2016 at 11:55 PM, Kant Kodali <k...@peernova.com> wrote: > Looking at this > http://www.theregister.co.uk/2016/12/16/oracle_targets_java_users_non_compliance/?mt=1481919461669 > I don't know why Cassandra recommends Oracle JVM? The long answer probably dates

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

than OpenJDK. >>>>>> >>>>>>So while OpenJDK is functionnaly the same as Oracle JDK it may >>>>>>not have the same performance or the same bugs or the same security >>>>>> fixes. >>>>>>(Unles

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

not >>>>>have the same performance or the same bugs or the same security fixes. >>>>>(Unless are your ready to test that with your production servers and >>>>> your >>>>>production data). >>>>> >>>>>

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

hen they test Cassandra. >>>>- >>>> >>>>There’s also a question of support. OpeJDK is for the community. >>>>Oracle can offer support but maybe only for Oracle JDK. >>>> >>>>Twitter uses OpenJDK, but they have their own JVM support team. Not >>>>sure everyone can afford that. >>>> >>>> As a side note I’ll add that Oracle is paying talented engineers to >>>> work on the JVM to make it great. >>>> >>>> Cheers, >>>> ​ >>>> >>>> -- Brice >>>> >>>> On Wed, Dec 21, 2016 at 6:55 AM, Kant Kodali <k...@peernova.com> wrote: >>>> >>>>> Looking at this http://www.theregister.co >>>>> .uk/2016/12/16/oracle_targets_java_users_non_compliance/?mt= >>>>> 1481919461669 I don't know why Cassandra recommends Oracle JVM? >>>>> >>>>> JVM is a great piece of software but I would like to stay away from >>>>> Oracle as much as possible. Oracle is just horrible the way they are >>>>> dealing with Java in General. >>>>> >>>>> >>>>> >>>> >>> >> >

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

or Oracle JDK. >>> >>>Twitter uses OpenJDK, but they have their own JVM support team. Not >>>sure everyone can afford that. >>> >>> As a side note I’ll add that Oracle is paying talented engineers to work >>> on the JVM to make it great. >>> >>> Cheers, >>> ​ >>> >>> -- Brice >>> >>> On Wed, Dec 21, 2016 at 6:55 AM, Kant Kodali <k...@peernova.com> wrote: >>> >>>> Looking at this http://www.theregister.co.uk/2016/12/16/oracle_targets_ >>>> java_users_non_compliance/?mt=1481919461669 I don't know why Cassandra >>>> recommends Oracle JVM? >>>> >>>> JVM is a great piece of software but I would like to stay away from >>>> Oracle as much as possible. Oracle is just horrible the way they are >>>> dealing with Java in General. >>>> >>>> >>>> >>> >> >

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

pport team. Not >>sure everyone can afford that. >> >> As a side note I’ll add that Oracle is paying talented engineers to work >> on the JVM to make it great. >> >> Cheers, >> ​ >> >> -- Brice >> >> On Wed, Dec 21, 2016 at 6:5

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

great. > > Cheers, > ​ > > -- Brice > > On Wed, Dec 21, 2016 at 6:55 AM, Kant Kodali <k...@peernova.com> wrote: > >> Looking at this http://www.theregister.co.uk/2016/12/16/oracle_targets_ >> java_users_non_compliance/?mt=1481919461669 I don't know why Cassan

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

mpliance/?mt=1481919461669 I don't know why > Cassandra recommends Oracle JVM? > > JVM is a great piece of software but I would like to stay away from Oracle > as much as possible. Oracle is just horrible the way they are dealing with > Java in General. > > >

Why does Cassandra recommends Oracle JVM instead of OpenJDK?

Looking at this http://www.theregister.co.uk/2016/12/16/oracle_targets_java_users_non_compliance/?mt=1481919461669 I don't know why Cassandra recommends Oracle JVM? JVM is a great piece of software but I would like to stay away from Oracle as much as possible. Oracle is just horrible the way

Re: Cassandra to Oracle?

Thanks for all the ideas... Since we can't predict all the values, we actually cut to Oracle today via a map/reduce job. Oracle is able to support all the ad hoc queries the users want (via Indexes), but the extract job takes a long time (hours). The users need more real-time, which is

Re: Cassandra to Oracle?

Eric, Thinking even a little bit more about this... We could go the distributed counter approach with additional column families to support the ad hoc queries, but use triggers to implement it. That would allow us to keep the client-side code thin, but achieve the same result... without

Re: Cassandra to Oracle?

The composite-key approach with counters would work very well in this case. It will also obviate the concern of not knowing the exact column names apriori...although for efficiencies, you might to look at maintaining a secondary cachelike cf for lookup Depending on your data patterns(not to

Re: Cassandra to Oracle?

My bad ~s/X:X-Value/Y:Y-Value/ after rereading the SELECT. /*** sent from my android...please pardon occasional typos as I respond @ the speed of thought / On Jan 22, 2012 6:40 AM, Milind Parikh milindpar...@gmail.com wrote: The composite-key approach

Re: Cassandra to Oracle?

You don't have to use oracle and pay money, you can use postgresql for example. Triggers aren't that hard to implement. We actually do.all of our mutations now via triggers and we did it inside by effectivley overriding the mutate logic itself. On Jan 20, 2012 11:42 AM, Zach Richardson

Re: Cassandra to Oracle?

Good point Milind. (RE: Client-side AOP) I was thinking server-side to stay with the trigger concept, but we could just as easily intercept on the client-side. We'd just need to make sure that all clients got the AOP code injected. (including all of our map/reduce jobs) If we get the

Re: Cassandra to Oracle?

Hi Brian, We're trying to do the exact same thing and I find myself asking very similar questions. Our solution though has been to find what kind of queries we need to satisfy on a preemptive basis and leverage cassandra's built-in indexing features to build those result sets beforehand. The

Cassandra to Oracle?

I can't remember if I asked this question before, but We're using Cassandra as our transactional system, and building up quite a library of map/reduce jobs that perform data quality analysis, statistics, etc. ( 100 jobs now) But... we are still struggling to provide an ad-hoc query mechanism

Re: Cassandra to Oracle?

How much data do you think you will need ad hoc query ability for? On Fri, Jan 20, 2012 at 11:28 AM, Brian O'Neill b...@alumni.brown.eduwrote: I can't remember if I asked this question before, but We're using Cassandra as our transactional system, and building up quite a library of

Re: Cassandra to Oracle?

Not terribly large ~50 million rows, each row has ~100-300 columns. But big enough that a map/reduce job takes longer than users would like. Actually maybe that is another question... Does anyone have any benchmarks running map/reduce against Cassandra? (even a simple count / or copy CF

Re: Cassandra to Oracle?

What makes you think that RDBMS will give you acceptable performance? I guess you will try to index it to death (because otherwise the ad hoc queries won't work well if at all), and at this point you may be hit with a performance penalty. It may be a good idea to interview users and build

Re: Cassandra to Oracle?

I think the problem stems when you have data in a column that you need to run adhoc query on which is not denormalized. In most cases it's difficult to predict the type of query that would be required. Another way of solving this could be to index the fields in search engine. On Fri, Jan 20,

Re: Cassandra to Oracle?

I certainly agree with difficult to predict. There is a Danish proverb, which goes it's difficult to make predictions, especially about the future. My point was that it's equally difficult with noSQL and RDBMS. The latter requires indexing to operate well, and that's a potential performance

Re: Cassandra Vs. Oracle Coherence

the difference between Cassandra and Oracle Coherence. Precisely , looking for reasons why would some select Cassandra over Oracle Coherence. Does anyone did the exercise of comparing them? Appreciate if you can share some information on that. Regrads -RK -- It's always darkest just

Re: Cassandra Vs. Oracle Coherence

On Tue, May 17, 2011 at 10:44 PM, Karamel, Raghu raghu_kara...@intuit.com wrote: Hi, I am new to Cassandra and very excited with the technology. I am evaluating it and trying to understand the difference between Cassandra and Oracle Coherence. Precisely , looking for reasons why would

Re: Cassandra Vs. Oracle Coherence

evaluating it and trying to understand the difference between Cassandra and Oracle Coherence. Precisely , looking for reasons why would some select Cassandra over Oracle Coherence. Does anyone did the exercise of comparing them? Appreciate if you can share some information on that. Regrads

Re: Cassandra Vs. Oracle Coherence

Coherence is similar to memcachd (free). It's in memory cache layer on top of the DB. You as a user need to keep that cache in sync with the DB. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-Vs-Oracle-Coherence-tp6375561p6386847.html

Re: Cassandra Vs. Oracle Coherence

with the DB. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-Vs-Oracle-Coherence-tp6375561p6386847.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.

Re: Cassandra Vs. Oracle Coherence

Other interesting flavors in a distributed cache terracotta, gemfire.together with a complex event processing engine. like OCEP drives a lot of low latency, high freq trading where nano seconds matter /*** sent from my android...please pardon occasional typos

Re: Cassandra Vs. Oracle Coherence

another product in the same area is gigaspaces. On Fri, May 20, 2011 at 1:12 PM, Milind Parikh milindpar...@gmail.com wrote: Other interesting flavors in a distributed cache terracotta, gemfire.together with a complex event processing engine. like OCEP drives a lot of low

Cassandra Vs. Oracle Coherence

Hi, I am new to Cassandra and very excited with the technology. I am evaluating it and trying to understand the difference between Cassandra and Oracle Coherence. Precisely , looking for reasons why would some select Cassandra over Oracle Coherence. Does anyone did the exercise of comparing