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Posted to dev@lucene.apache.org by hello hello <se...@hotmail.com> on 2018/12/11 13:54:39 UTC
migration de SOLR 4.9 vers 7
Bonjour ,
I am a project manager at La Poste française , I am managing a national project using SORL 4.9 and I want to migrate to SOLR 7 .
Can you give me a summary of all the spots that need to be done to make this migration? Thank oyu your for help Fred
Re: migration de SOLR 4.9 vers 7
Posted by Erick Erickson <er...@gmail.com>.
bq. You will have to migrate your indexes from 4 to 5, then 5 to 6,
and finally 6 to 7.
This actually has never been guaranteed. Lucene has guaranteed
back-compat for 1 major version. Using the IndexUpgrader tool will
rewrite the X-1 format in version X format, but cannot synthesize data
from thin air. So starting with X-2 -> X-1 -> X hasn't failed to run,
it just hasn't necessarily worked like an index that was created
entirely with version X.
This has been formalized starting with Lucene 6. A marker has been
written in each segment that is preserved across all merges and will
refuse to open indexes with a marker from X-2. If you merge two
segments, one created with X-1 and one created with X, the X-1 marker
is preserved. If you try to use Solr 8 on an index that has segments
that have _ever_ been touched by Lucene 6, Lucene will refuse to open
the index.
And anyway, the IndexUpgraderTool just optimizes down to 1 segment,
which has its own problems.
It's best to plan on re-indexing into a fresh collection...
Best,
Erick
On Tue, Dec 11, 2018 at 9:30 AM Emmanuel Keller
<ke...@gmail.com> wrote:
>
> About the migration strategy, you may have to choose between reindexing all the data or migrating your current indexes.
>
> the IndexUpgrader tool will be able to handle that.
> You will have to migrate your indexes from 4 to 5, then 5 to 6, and finally 6 to 7.
> https://lucene.apache.org/solr/guide/7_6/indexupgrader-tool.html
>
> If you still have your original data, then the reindexing option is better. And even more if you plan to use the new field options available, which means changing the schema.
>
> If it can help :D
>
>
>
> On 11 Dec 2018, at 17:08, Cassandra Targett <ca...@gmail.com> wrote:
>
> The Solr Ref Guide also has extensive sections (particularly for upgrading to Solr 6 and 7) describing summarizing major changes for various releases. Start at https://lucene.apache.org/solr/guide/solr-upgrade-notes.html and note the child pages from there.
>
> Cassandra
> On Dec 11, 2018, 10:30 AM -0600, Erick Erickson <er...@gmail.com>, wrote:
>
> The CHANGES.txt file in both the Solr and Lucene directories have a
> section listing the differences between every Solr version, major and
> minor that you could review. The reference guide has an upgrade
> section as well that will be informative.
>
> That said, there are many changes. Lot and lots and lots. What I'd do
> is plan on starting with a fresh Solr 7x setup, migrate your
> configurations (as in make similar changes in the 7x configs, do not
> just copy/paste). and start testing after indexing fresh. You haven't
> said whether you have any custom code and the like, so that is an
> unknown.
>
> Best,
> Erick
> On Tue, Dec 11, 2018 at 6:28 AM hello hello <se...@hotmail.com> wrote:
>
>
> Bonjour ,
>
> I am a project manager at La Poste française , I am managing a national project using SORL 4.9 and I want to migrate to SOLR 7 .
> Can you give me a summary of all the spots that need to be done to make this migration? Thank oyu your for help Fred
>
>
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Re: migration de SOLR 4.9 vers 7
Posted by Emmanuel Keller <ke...@gmail.com>.
About the migration strategy, you may have to choose between reindexing all the data or migrating your current indexes.
the IndexUpgrader tool will be able to handle that.
You will have to migrate your indexes from 4 to 5, then 5 to 6, and finally 6 to 7.
https://lucene.apache.org/solr/guide/7_6/indexupgrader-tool.html <https://lucene.apache.org/solr/guide/7_6/indexupgrader-tool.html>
If you still have your original data, then the reindexing option is better. And even more if you plan to use the new field options available, which means changing the schema.
If it can help :D
> On 11 Dec 2018, at 17:08, Cassandra Targett <ca...@gmail.com> wrote:
>
> The Solr Ref Guide also has extensive sections (particularly for upgrading to Solr 6 and 7) describing summarizing major changes for various releases. Start at https://lucene.apache.org/solr/guide/solr-upgrade-notes.html <https://lucene.apache.org/solr/guide/7_5/solr-upgrade-notes.html> and note the child pages from there.
>
> Cassandra
> On Dec 11, 2018, 10:30 AM -0600, Erick Erickson <er...@gmail.com>, wrote:
>> The CHANGES.txt file in both the Solr and Lucene directories have a
>> section listing the differences between every Solr version, major and
>> minor that you could review. The reference guide has an upgrade
>> section as well that will be informative.
>>
>> That said, there are many changes. Lot and lots and lots. What I'd do
>> is plan on starting with a fresh Solr 7x setup, migrate your
>> configurations (as in make similar changes in the 7x configs, do not
>> just copy/paste). and start testing after indexing fresh. You haven't
>> said whether you have any custom code and the like, so that is an
>> unknown.
>>
>> Best,
>> Erick
>> On Tue, Dec 11, 2018 at 6:28 AM hello hello <se...@hotmail.com> wrote:
>>>
>>> Bonjour ,
>>>
>>> I am a project manager at La Poste française , I am managing a national project using SORL 4.9 and I want to migrate to SOLR 7 .
>>> Can you give me a summary of all the spots that need to be done to make this migration? Thank oyu your for help Fred
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
>> For additional commands, e-mail: dev-help@lucene.apache.org
>>
Re: migration de SOLR 4.9 vers 7
Posted by Cassandra Targett <ca...@gmail.com>.
The Solr Ref Guide also has extensive sections (particularly for upgrading to Solr 6 and 7) describing summarizing major changes for various releases. Start at https://lucene.apache.org/solr/guide/solr-upgrade-notes.html and note the child pages from there.
Cassandra
On Dec 11, 2018, 10:30 AM -0600, Erick Erickson <er...@gmail.com>, wrote:
> The CHANGES.txt file in both the Solr and Lucene directories have a
> section listing the differences between every Solr version, major and
> minor that you could review. The reference guide has an upgrade
> section as well that will be informative.
>
> That said, there are many changes. Lot and lots and lots. What I'd do
> is plan on starting with a fresh Solr 7x setup, migrate your
> configurations (as in make similar changes in the 7x configs, do not
> just copy/paste). and start testing after indexing fresh. You haven't
> said whether you have any custom code and the like, so that is an
> unknown.
>
> Best,
> Erick
> On Tue, Dec 11, 2018 at 6:28 AM hello hello <se...@hotmail.com> wrote:
> >
> > Bonjour ,
> >
> > I am a project manager at La Poste française , I am managing a national project using SORL 4.9 and I want to migrate to SOLR 7 .
> > Can you give me a summary of all the spots that need to be done to make this migration? Thank oyu your for help Fred
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
> For additional commands, e-mail: dev-help@lucene.apache.org
>
Re: migration de SOLR 4.9 vers 7
Posted by Erick Erickson <er...@gmail.com>.
The CHANGES.txt file in both the Solr and Lucene directories have a
section listing the differences between every Solr version, major and
minor that you could review. The reference guide has an upgrade
section as well that will be informative.
That said, there are many changes. Lot and lots and lots. What I'd do
is plan on starting with a fresh Solr 7x setup, migrate your
configurations (as in make similar changes in the 7x configs, do not
just copy/paste). and start testing after indexing fresh. You haven't
said whether you have any custom code and the like, so that is an
unknown.
Best,
Erick
On Tue, Dec 11, 2018 at 6:28 AM hello hello <se...@hotmail.com> wrote:
>
> Bonjour ,
>
> I am a project manager at La Poste française , I am managing a national project using SORL 4.9 and I want to migrate to SOLR 7 .
> Can you give me a summary of all the spots that need to be done to make this migration? Thank oyu your for help Fred
>
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