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Topic for #virtualJUG is now Welcome to the Virtual JUG - http://virtualJUG.com. IRC logs can be found here -> http://irclog.greptilian.com/virtualJUG/today |
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shelajev |
hello people! |
| 15:55 |
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shelajev |
Dr. Venkat is with us already so we should hopefully start on time |
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sjmaple |
Happy Java 9 day folks :) |
| 15:59 |
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sjmaple |
We'll be starting in a minute or so |
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Dan_Newton |
do we need to give out presents on java 9 day or? :) |
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shelajev |
are they packaged as modular jars? then perhaps now is the right time for them |
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sjmaple |
presents can be given via JIRA ;) |
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SubOptimal |
Hi guys. |
| 16:10 |
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sjmaple |
List.of(1,2,3,4,5,6) :) |
| 16:10 |
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CarlJokl |
Presents? |
| 16:11 |
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sjmaple |
For Java 9's birthday |
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tch |
Hey, have very general question: should we at all use parallel streams? StackOverflow will tell you it's inefficient in default case |
| 16:16 |
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tch |
e.g. https://stackoverflow.com/a/20375622 |
| 16:17 |
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sjmaple |
thanks tch, I'll ask towards the end if that's ok |
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tch |
Yeah, sure. Thanks! |
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sjmaple |
np |
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michaelb |
connection keeps dropping |
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CarlJokl |
Hopefully there isn't a: stream.cross(otherStream); |
| 16:25 |
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sjmaple |
javadoc // never do this |
| 16:26 |
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nathan |
is it possible to control the thread count in Common pool? |
| 16:26 |
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Buland |
We do not limit Parallel threads to the # of cores as for example in case of web server, though that web server running on few core machines still supports many parallel thread/file descriptors and we need that because if we bound it to # of cores than difficult to expand |
| 16:27 |
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| 16:27 |
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michaelb |
Giving up |
| 16:27 |
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Buland |
how to calculate the blocking factor? |
| 16:28 |
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sjmaple |
I think Venkat answered your first question Buland |
| 16:29 |
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sjmaple |
and I think he's about to answer nathan's |
| 16:29 |
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sjmaple |
if not, let me know and I'll ask |
| 16:29 |
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Buland |
no not really, my question is our web servers support many parallel threads than the # of cores but still gets better performance so why limit in this case |
| 16:30 |
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Buland |
conceptually what venkat mentioend makes sense but wanted to read his mind little bit more if possible, thx |
| 16:30 |
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sjmaple |
got it |
| 16:30 |
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sjmaple |
is anyone else having a problem with the connection by the way? |
| 16:31 |
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Buland |
which IDE venkat is using .. seems interesting? |
| 16:31 |
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CarlJokl |
It is a pain watching on my phone my company firewall blocks YouTube |
| 16:32 |
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Buland |
there will be a recording I guess so we all can watch it later as well |
| 16:32 |
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sjmaple |
I think it's called TextMate |
| 16:32 |
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Buland |
thx sjmaple |
| 16:32 |
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sjmaple |
he adds a bunch of plugins which compile/run on save |
| 16:32 |
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sjmaple |
he has a video on his site that talks about it |
| 16:33 |
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Buland |
cool will be great if we have that video |
| 16:33 |
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Buland |
will be handy for developers |
| 16:33 |
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| 16:37 |
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Dwarak |
Can we not use parallel() and yet run in a pool? |
| 16:37 |
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shelajev |
ForkJoinPool.commonPool().submit? |
| 16:38 |
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shelajev |
ah, sorry, brainfart |
| 16:38 |
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shelajev |
good question, Dwarak |
| 16:38 |
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Buland |
I see I got it, somehow lost that lost connection .. I think vebkat mentioned that, I thought he was talking about in general terms but he was very specific about extensive computational operations where it makes sense |
| 16:39 |
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SubOptimal |
http://blog.agiledeveloper.com/2014/10/running-in-textmate.html |
| 16:39 |
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SubOptimal |
There is a link to the mentioned video about running in TextMate. |
| 16:39 |
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Buland |
thx SubOptimal! |
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sjmaple |
is that your question, Dwarak? |
| 16:42 |
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Dwarak |
Excellent.. thats what i asked |
| 16:42 |
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sjmaple |
great |
| 16:43 |
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nathan |
does it use Thread affinity internally? |
| 16:44 |
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sjmaple |
is affinity useful without state? |
| 16:44 |
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Dan_Newton |
the comma! |
| 16:47 |
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Buland |
additional "'" |
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sjmaple |
any final questions? |
| 16:59 |
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doddi |
how does java9 stream 'when' work with parallel, does it stop all from getting run? |
| 17:00 |
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doddi |
I cant recall the syntax |
| 17:00 |
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doddi |
there is a newer function to iterate a stream 'until' it reaches a limit |
| 17:00 |
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sjmaple |
oh, when is a method? |
| 17:00 |
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sjmaple |
oh I know what you mean |
| 17:01 |
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doddi |
takeWhile :-) |
| 17:01 |
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doddi |
etc |
| 17:02 |
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sjmaple |
got it! thanks |
| 17:03 |
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Karthik_B |
Thanks Venkat |
| 17:03 |
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BozemanPatty |
Thank you for the excellent presentation |
| 17:03 |
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SubOptimal_ |
bye |
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