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Posted to common-dev@hadoop.apache.org by Runping Qi <ru...@yahoo-inc.com> on 2006/04/03 23:04:37 UTC
Can we use the features that are new in Java 1.5 for Hadoop contribution?
In other words, does Hadoop need to be compatible with Java 1.4?
Thanks.
Runping
Re: Can we use the features that are new in Java 1.5 for Hadoop contribution?
Posted by Stefan Groschupf <sg...@media-style.com>.
It would be nice to have, nothing more.
Hadoop 0.2 will introduce some features that can be very useful for
nutch.
Nutch is mostly used as smaller horizontal search engines or
alternatives to google appliance servers.
In such scenarios I saw often that it runs on the same servers as the
portal or webpage that still use java 1.4.
Again, nice to have - no requirement.
Stefan
Am 04.04.2006 um 02:12 schrieb Eric Baldeschwieler:
> why?
>
> Does the recent release satisfy this need?
>
> On Apr 3, 2006, at 2:57 PM, Stefan Groschupf wrote:
>
>>> I.e., generics, so there's no easy backport strategy. Thus we
>>> need to poll Hadoop and Nutch users.
>>
>> As a user, I would love to stay hadoop java 1.4 compatible for
>> some more time.
>
>
---------------------------------------------
blog: http://www.find23.org
company: http://www.media-style.com
Re: Can we use the features that are new in Java 1.5 for Hadoop contribution?
Posted by Eric Baldeschwieler <er...@yahoo-inc.com>.
why?
Does the recent release satisfy this need?
On Apr 3, 2006, at 2:57 PM, Stefan Groschupf wrote:
>> I.e., generics, so there's no easy backport strategy. Thus we
>> need to poll Hadoop and Nutch users.
>
> As a user, I would love to stay hadoop java 1.4 compatible for
> some more time.
Re: Can we use the features that are new in Java 1.5 for Hadoop contribution?
Posted by Stefan Groschupf <sg...@media-style.com>.
> I.e., generics, so there's no easy backport strategy. Thus we need
> to poll Hadoop and Nutch users.
As a user, I would love to stay hadoop java 1.4 compatible for some
more time.
Re: Can we use the features that are new in Java 1.5 for Hadoop contribution?
Posted by Doug Cutting <cu...@apache.org>.
Runping Qi wrote:
> I am thinking of the parameterized collection library.
I.e., generics, so there's no easy backport strategy. Thus we need to
poll Hadoop and Nutch users.
Doug
RE: Can we use the features that are new in Java 1.5 for Hadoop contribution?
Posted by Runping Qi <ru...@yahoo-inc.com>.
I am thinking of the parameterized collection library.
Runping
-----Original Message-----
From: Doug Cutting [mailto:cutting@apache.org]
Sent: Monday, April 03, 2006 2:29 PM
To: hadoop-dev@lucene.apache.org
Subject: Re: Can we use the features that are new in Java 1.5 for Hadoop
contribution?
Runping Qi wrote:
> In other words, does Hadoop need to be compatible with Java 1.4?
That's a good question. I think it also really needs to be asked on the
Nutch user list, since most Hadoop users are using Hadoop via its
inclusion in Nutch. The issue will be (from my experience with Lucene)
folks whose platform does not yet support Java 1.5. Owen & looked into
this a bit, and it seems like Java 1.5 has made it to Macs, FreeBSD,
etc. by now, but it's hard to know whether there are other fringe
platforms that don't yet have a solid Java 1.5 port. We don't need to
support everyone forever, but we also don't want to alienate a host of
users.
What features are you interested in using? Some features, like the
concurrency stuff, have been backported. (Nutch currently uses a
backported version of that.) Others, like generics, would be more
difficult to back-port.
Doug
Re: Can we use the features that are new in Java 1.5 for Hadoop contribution?
Posted by Doug Cutting <cu...@apache.org>.
Runping Qi wrote:
> In other words, does Hadoop need to be compatible with Java 1.4?
That's a good question. I think it also really needs to be asked on the
Nutch user list, since most Hadoop users are using Hadoop via its
inclusion in Nutch. The issue will be (from my experience with Lucene)
folks whose platform does not yet support Java 1.5. Owen & looked into
this a bit, and it seems like Java 1.5 has made it to Macs, FreeBSD,
etc. by now, but it's hard to know whether there are other fringe
platforms that don't yet have a solid Java 1.5 port. We don't need to
support everyone forever, but we also don't want to alienate a host of
users.
What features are you interested in using? Some features, like the
concurrency stuff, have been backported. (Nutch currently uses a
backported version of that.) Others, like generics, would be more
difficult to back-port.
Doug