Hi All,
1. After Upgrading Lucene from 4.6 to 8, facing issue in search process.
2.We are creating 5 different folder for indexing with different index id ( 5
folders from 5 different tables). During search process we will join all these
data to display. After upgrading we are facing issue in search data.
3. When we are applying filter for different fields from different index_id. It
is searching for only one field.
4. I am seeing difference in Join Query.
JoinUtil.createJoinQuery(fromField, false, toField, Query, srch,
ScoreMode.None);
Query formation with different versions:
Lucene 4.6.0:
TermsQuery{field=case.id}
fromQuery=+(history.attribute:SExtendedAttribute1)
+history.modifiedBy:3ff0000000000000 (different parameter)
Lucene 8.0.0:
TermsQuery{field=case.idfromQuery=+(history.attribute:SExtendedAttribute1)
+history.modifiedBy:3ff0000000000000}
fromQuery=+(history.attribute:SExtendedAttribute1)
+history.modifiedBy:3ff0000000000000 (different parameter is also visible.)
Please Suggest me , as new to the Lucene unable to predict it.
-----Original Message-----
From: Jyothsna Bavisetti
Sent: Wednesday, October 2, 2019 2:49 AM
To: [email protected]
Subject: RE: Lucene index upgrade from 4.6 to 8 facing issue
Thank you,
Thanks,
Jyothsna
Hi Shawn,
Any doc or links for re indexing process. We are using Lucene core 8.0.0.
Thanks,
Jyothsna
-----Original Message-----
From: Jyothsna Bavisetti
Sent: Thursday, September 26, 2019 11:51 PM
To: [email protected]
Subject: RE: Lucene index upgrade from 4.6 to 8 facing issue
Hi Shawn,
Re-indexing is costly transaction in my use case as it takes more than three
days. Please let me know if any work around?
Thanks,
Jyothsna
-----Original Message-----
From: Shawn Heisey <[email protected]>
Sent: Thursday, September 26, 2019 11:35 PM
To: [email protected]
Subject: Re: Lucene index upgrade from 4.6 to 8 facing issue
On 9/26/2019 11:41 AM, Jyothsna Bavisetti wrote:
> I am trying to upgrade Lucene index from 4.6 to 8.0.0. When I'm trying
> to upgrade tool using:
>
> java -cp lucene-core.jar:lucene-backward-codecs.jar \
>
> org.apache.lucene.index.IndexUpgrader-delete-prior-commits \
<snip>
> Please let me know any option other than reindexing.
If you're upgrading more than one major version, you must reindex.
Multiple major version upgrades have always been discouraged and never
guaranteed to work, but now such upgrades are explicitly denied.
When you used the IndexUpgrader from Lucene 6, the Lucene version was written
into the index. The recorded version was preserved by the upgrader for version
7. When the index was subsequently read by version 8, it complained because
the original index was not written by version 7 or later.
Thanks,
Shawn
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