You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@lucene.apache.org by Jack Krupansky <ja...@gmail.com> on 2016/03/05 19:07:48 UTC
Java for 6.0?
Could somebody remind me, which Java release will be recommended and which
releases will be supported for the upcoming Lucene/Solr 6.0 release? I
mean, will it remain the same or change from the 5.5 system requirements
page:
http://lucene.apache.org/core/5_5_0/SYSTEM_REQUIREMENTS.html
"Apache Lucene runs of Java 7 or greater, Java 8 is verified to be
compatible and may bring some performance improvements."
I wasn't sure where Java 9 is these days. Some statement on it seems
warranted, otherwise "7 or greater" implies that 9 is fine.
-- Jack Krupansky
Re: Java for 6.0?
Posted by Shawn Heisey <ap...@elyograg.org>.
On 3/5/2016 11:07 AM, Jack Krupansky wrote:
> Could somebody remind me, which Java release will be recommended and
> which releases will be supported for the upcoming Lucene/Solr 6.0
> release? I mean, will it remain the same or change from the 5.5 system
> requirements page:
> http://lucene.apache.org/core/5_5_0/SYSTEM_REQUIREMENTS.html
>
> "Apache Lucene runs of Java 7 or greater, Java 8 is verified to be
> compatible and may bring some performance improvements."
Java 8 is required for 6.0.
I would say that our top recommendation should be the latest version of
Oracle Java 8 or OpenJDK 8.
Last I knew, Java 9 has some bugs that Lucene/Solr tickles.
Thanks,
Shawn
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org
Re: Java for 6.0?
Posted by Jack Krupansky <ja...@gmail.com>.
Thanks for reminding me that I should have checked the updated sys req in
the repo for trunk in the first place.
Now I also recall some of the great debate from over a year ago and the
final decision to move trunk to Java 8:
https://issues.apache.org/jira/browse/LUCENE-5950
It still feels to me that the sys req file, as released or in the repo
should make the most accurate possible statement about Java beyond the
recommended release. In this case it should be something like "As of month
day, year, Java 9 is known not to support Lucene 6 due to known JVM bugs."
I mean, explicitly saying "Apache Lucene runs on Java 8 or greater" seems
misleading since we know that Lucene 6 ONLY runs on Java 8.
Also, the linked JavaBugs wiki page doesn't even mention Java 9 and hasn't
been updated since January of last year. It would be nice to have that be a
file in the repo, although I recognize that it might warrant post-release
updates as Java releases evolve.
Also note that Solr has a separate sys req page that roughly copies the
Lucene page, so any changes in the Lucene page would need to be propagated
to the Solr page:
https://github.com/apache/lucene-solr/blob/master/solr/site/SYSTEM_REQUIREMENTS.mdtext
(I think that's all that *I* can say at this point.)
-- Jack Krupansky
On Sat, Mar 5, 2016 at 1:43 PM, Uwe Schindler <uw...@thetaphi.de> wrote:
> See also the corresponding SYSTEM_REQUIREMENTS.txt file of Lucene 6:
>
>
>
> --snip--
>
> Apache Lucene runs on Java 8 or greater.
>
>
>
> It is also recommended to always use the latest update version of your
>
> Java VM, because bugs may affect Lucene. An overview of known JVM bugs
>
> can be found on http://wiki.apache.org/lucene-java/JavaBugs
>
> --snip--
>
>
>
> That is all we can say at this point. Once Java 9 is out we can make more
> statements but not at this time.
>
>
>
> Uwe
>
>
>
> -----
>
> Uwe Schindler
>
> H.-H.-Meier-Allee 63, D-28213 Bremen
>
> http://www.thetaphi.de
>
> eMail: uwe@thetaphi.de
>
>
>
> *From:* Uwe Schindler [mailto:uwe@thetaphi.de]
> *Sent:* Saturday, March 05, 2016 7:36 PM
> *To:* dev@lucene.apache.org
> *Subject:* RE: Java for 6.0?
>
>
>
> Hi,
>
>
>
> Java 9 is not yet released so we cannot make a statement about supporting
> it… Especially as the latest preview build does not work at all J. But
> once it is out we will add a similar statement.
>
>
>
> At the moment, Java 8 is the minimum requirement and it is also the
> recommended one for Lucene 6.
>
>
>
> Uwe
>
>
>
> -----
>
> Uwe Schindler
>
> H.-H.-Meier-Allee 63, D-28213 Bremen
>
> http://www.thetaphi.de
>
> eMail: uwe@thetaphi.de
>
>
>
> *From:* Jack Krupansky [mailto:jack.krupansky@gmail.com
> <ja...@gmail.com>]
> *Sent:* Saturday, March 05, 2016 7:08 PM
> *To:* Lucene-dev <de...@lucene.apache.org>
> *Subject:* Java for 6.0?
>
>
>
> Could somebody remind me, which Java release will be recommended and which
> releases will be supported for the upcoming Lucene/Solr 6.0 release? I
> mean, will it remain the same or change from the 5.5 system requirements
> page:
>
> http://lucene.apache.org/core/5_5_0/SYSTEM_REQUIREMENTS.html
>
>
>
> "Apache Lucene runs of Java 7 or greater, Java 8 is verified to be
> compatible and may bring some performance improvements."
>
>
>
> I wasn't sure where Java 9 is these days. Some statement on it seems
> warranted, otherwise "7 or greater" implies that 9 is fine.
>
>
> -- Jack Krupansky
>
RE: Java for 6.0?
Posted by Uwe Schindler <uw...@thetaphi.de>.
See also the corresponding SYSTEM_REQUIREMENTS.txt file of Lucene 6:
--snip--
Apache Lucene runs on Java 8 or greater.
It is also recommended to always use the latest update version of your
Java VM, because bugs may affect Lucene. An overview of known JVM bugs
can be found on http://wiki.apache.org/lucene-java/JavaBugs
--snip--
That is all we can say at this point. Once Java 9 is out we can make more statements but not at this time.
Uwe
-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
<http://www.thetaphi.de/> http://www.thetaphi.de
eMail: uwe@thetaphi.de
From: Uwe Schindler [mailto:uwe@thetaphi.de]
Sent: Saturday, March 05, 2016 7:36 PM
To: dev@lucene.apache.org
Subject: RE: Java for 6.0?
Hi,
Java 9 is not yet released so we cannot make a statement about supporting it… Especially as the latest preview build does not work at all :). But once it is out we will add a similar statement.
At the moment, Java 8 is the minimum requirement and it is also the recommended one for Lucene 6.
Uwe
-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
<http://www.thetaphi.de/> http://www.thetaphi.de
eMail: <ma...@thetaphi.de> uwe@thetaphi.de
From: Jack Krupansky [ <ma...@gmail.com> mailto:jack.krupansky@gmail.com]
Sent: Saturday, March 05, 2016 7:08 PM
To: Lucene-dev < <ma...@lucene.apache.org> dev@lucene.apache.org>
Subject: Java for 6.0?
Could somebody remind me, which Java release will be recommended and which releases will be supported for the upcoming Lucene/Solr 6.0 release? I mean, will it remain the same or change from the 5.5 system requirements page:
http://lucene.apache.org/core/5_5_0/SYSTEM_REQUIREMENTS.html
"Apache Lucene runs of Java 7 or greater, Java 8 is verified to be compatible and may bring some performance improvements."
I wasn't sure where Java 9 is these days. Some statement on it seems warranted, otherwise "7 or greater" implies that 9 is fine.
-- Jack Krupansky
RE: Java for 6.0?
Posted by Uwe Schindler <uw...@thetaphi.de>.
Hi,
Java 9 is not yet released so we cannot make a statement about supporting it… Especially as the latest preview build does not work at all :). But once it is out we will add a similar statement.
At the moment, Java 8 is the minimum requirement and it is also the recommended one for Lucene 6.
Uwe
-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
<http://www.thetaphi.de/> http://www.thetaphi.de
eMail: uwe@thetaphi.de
From: Jack Krupansky [mailto:jack.krupansky@gmail.com]
Sent: Saturday, March 05, 2016 7:08 PM
To: Lucene-dev <de...@lucene.apache.org>
Subject: Java for 6.0?
Could somebody remind me, which Java release will be recommended and which releases will be supported for the upcoming Lucene/Solr 6.0 release? I mean, will it remain the same or change from the 5.5 system requirements page:
http://lucene.apache.org/core/5_5_0/SYSTEM_REQUIREMENTS.html
"Apache Lucene runs of Java 7 or greater, Java 8 is verified to be compatible and may bring some performance improvements."
I wasn't sure where Java 9 is these days. Some statement on it seems warranted, otherwise "7 or greater" implies that 9 is fine.
-- Jack Krupansky