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From Sergey Kozlov <skoz...@gridgain.com>
Subject Re: Upgrade dependency to outdated Lucene 3.5.0
Date Tue, 23 May 2017 15:59:37 GMT
Hi Andrey

I see 5.5.4 in maven repository
https://mvnrepository.com/artifact/org.apache.lucene/lucene-core/5.5.4

On Tue, May 23, 2017 at 6:48 PM, Andrey Mashenkov <
andrey.mashenkov@gmail.com> wrote:

> Thanks. This fact was missed in migration guide.
>
> We have dependency to lucene in our osgi module, that refer to Apache
> ServiceMix :: Bundles  [1] .
> I can't see bundle for Lucene-5.5.4 in list, but there is a bundle for
> Lucene-5.5.2.
>
> Let's upgrade to Lucene-5.5.2.
>
> [1]
> https://mvnrepository.com/artifact/org.apache.
> servicemix.bundles/org.apache.servicemix.bundles.lucene
>
>
> On Tue, May 23, 2017 at 6:07 PM, 李玉珏@163 <18624049226@163.com> wrote:
>
> > Lucene6 requires JDK8 and later versions, and I think it might be
> > reasonable to update to the Lucene5.5.4 version.
> >
> >
> >
> > 在 2017/5/23 22:07, Andrey Mashenkov 写道:
> >
> >> Hi Igniters,
> >>
> >> Ignite-indexing module has outdated dependency to apache-lucene-3.5.0,
> >> however, actual version of lucene for now is 6.5.1. Here is a ticket
> [1].
> >>
> >> Store format version of 3.x is deprecated in 4.x and does not supported
> at
> >> all
> >> in higher versions, that cause difficulties to integrate with ignite on
> >> user side.
> >>
> >> Apache Lucene 6.x seems doen't support <=4.x index format,
> >> but 5.x index format can be used via additional jar with old codecs.
> >>
> >> Also, I've found GridLuceneIndex stores index in offheap via old
> approach
> >> and
> >> page memory is not supported, so it can't be persisted (looking forward
> to
> >> PDS).
> >>
> >> Seems, we will not break any compatibility if we upgrade lucene version
> in
> >> 2.1,
> >> until (or together with) Ignite full-text-search component supports page
> >> memory and PDS merged to ignite.
> >> I think we should upgrade to latest 6.x version, as it will much harder
> to
> >> do it later.
> >>
> >>
> >> Is there any cons\pros to upgrade lucene dependency up to latest 6.x
> >> version?
> >>
> >>
> >> [1] https://issues.apache.org/jira/browse/IGNITE-3562
> >>
> >>
> >
> >
>
>
> --
> Best regards,
> Andrey V. Mashenkov
>



-- 
Sergey Kozlov
GridGain Systems
www.gridgain.com

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