Upgrading Solr from 1.4.1 to 4.10

[Ra...@cognizant.com]

Hi Team,

We are using Apache Solr 1.4.1 for our project. Now a days we are facing many problems regarding solr indexing, so when we saw website we found latest version is 4.10, could you please help us in Upgrading the Solr.

Is there any specific things which we need to change from our current setup

Regards,
Raja
+91-8121704967
This e-mail and any files transmitted with it are for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient(s), please reply to the sender and destroy all copies of the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email, and/or any action taken in reliance on the contents of this e-mail is strictly prohibited and may be unlawful. Where permitted by applicable law, this e-mail and other e-mail communications sent to and from Cognizant e-mail addresses may be monitored.

Re: Upgrading Solr from 1.4.1 to 4.10

[Erick Erickson <er...@gmail.com>]

P.S. Do _NOT_ just copy your 1.4 configs to 4.x. Start
with the 4x sample configs and selectively move any
customizations from 1.4 or you'll get burned
by things like schema requiring _version_ in 4.x and
possibly _root_ etc.


Best,
Erick

On Fri, Nov 28, 2014 at 2:53 AM, David Philip
<da...@gmail.com> wrote:
> Hi Raja,
>
>   Could you please mention the list of solr features that you were/are
> using in Solr 1.4. There have been tremendous changes since 1.4 to 4.10.
> Also, you may have to explore solr cloud for resolving the indexing
> operation. But what kind of indexing problems are you facing?
>
> You should look into the link mentioned below. The best way to upgrade from
> such older version to latest is to configure the features that you were
> using in Solr 1.4 into solr 4.10, run test cases and start using it.
>
> Thanks - David.
>
> https://cwiki.apache.org/confluence/display/solr/Upgrading+Solr
>
>
>
>
>
>
>
>
>
>
>
> On Fri, Nov 28, 2014 at 3:14 PM, <Ra...@cognizant.com>
> wrote:
>
>> Hi Team,
>>
>> We are using Apache Solr 1.4.1 for our project. Now a days we are facing
>> many problems regarding solr indexing, so when we saw website we found
>> latest version is 4.10, could you please help us in Upgrading the Solr.
>>
>> Is there any specific things which we need to change from our current setup
>>
>> Regards,
>> Raja
>> +91-8121704967
>> This e-mail and any files transmitted with it are for the sole use of the
>> intended recipient(s) and may contain confidential and privileged
>> information. If you are not the intended recipient(s), please reply to the
>> sender and destroy all copies of the original message. Any unauthorized
>> review, use, disclosure, dissemination, forwarding, printing or copying of
>> this email, and/or any action taken in reliance on the contents of this
>> e-mail is strictly prohibited and may be unlawful. Where permitted by
>> applicable law, this e-mail and other e-mail communications sent to and
>> from Cognizant e-mail addresses may be monitored.
>>

Re: Upgrading Solr from 1.4.1 to 4.10

[David Philip <da...@gmail.com>]

Hi Raja,

  Could you please mention the list of solr features that you were/are
using in Solr 1.4. There have been tremendous changes since 1.4 to 4.10.
Also, you may have to explore solr cloud for resolving the indexing
operation. But what kind of indexing problems are you facing?

You should look into the link mentioned below. The best way to upgrade from
such older version to latest is to configure the features that you were
using in Solr 1.4 into solr 4.10, run test cases and start using it.

Thanks - David.

https://cwiki.apache.org/confluence/display/solr/Upgrading+Solr











On Fri, Nov 28, 2014 at 3:14 PM, <Ra...@cognizant.com>
wrote:

> Hi Team,
>
> We are using Apache Solr 1.4.1 for our project. Now a days we are facing
> many problems regarding solr indexing, so when we saw website we found
> latest version is 4.10, could you please help us in Upgrading the Solr.
>
> Is there any specific things which we need to change from our current setup
>
> Regards,
> Raja
> +91-8121704967
> This e-mail and any files transmitted with it are for the sole use of the
> intended recipient(s) and may contain confidential and privileged
> information. If you are not the intended recipient(s), please reply to the
> sender and destroy all copies of the original message. Any unauthorized
> review, use, disclosure, dissemination, forwarding, printing or copying of
> this email, and/or any action taken in reliance on the contents of this
> e-mail is strictly prohibited and may be unlawful. Where permitted by
> applicable law, this e-mail and other e-mail communications sent to and
> from Cognizant e-mail addresses may be monitored.
>

Re: Upgrading Solr from 1.4.1 to 4.10

[Shawn Heisey <ap...@elyograg.org>]

On 11/28/2014 2:44 AM, RajaDilipChowdary.Kolli@cognizant.com wrote:
> We are using Apache Solr 1.4.1 for our project. Now a days we are facing many problems regarding solr indexing, so when we saw website we found latest version is 4.10, could you please help us in Upgrading the Solr.
> 
> Is there any specific things which we need to change from our current setup

Solr 1.4.1 is extremely solid software, despite the fact that it was
released over four years ago.  There are very few bugs in it, though it
is missing a lot of functionality and performance that can be found in
newer versions.  We would recommend upgrading, but unless you give us
details about the problems you are having, we won't know for sure
whether upgrading will solve those problems.

The other two replies you received talked about starting with the 4.10.2
example config/schema and customizing that until you achieve a config
that meets your needs.  That's excellent advice ... you should listen to it.

I would strongly recommend reindexing from scratch.  Verion 4.x will not
be able to read indexes from Solr 1.4.1 at all, and if you take the
advice given earlier, your existing index may very well be incompatible
with the new config/schema that you create.

To use the existing index (assuming it's even compatible with the new
config/schema), you would first have to upgrade to version 3.6.2,
optimize the index, and then upgrade again.

You'll get better results by starting with a blank index on the new
version and reindexing.  Many bugs in indexing have been fixed over the
years.  Without a reindex, you will not see the benefit of those bugfixes.

http://wiki.apache.org/solr/HowToReindex

Your last question, about specific things to change ... this is
impossible to answer without seeing the existing setup ... and there
have been so many changes that starting over with the 4.10.2 example (as
already mentioned) is highly recommended.  It's a fair amount of work to
build a new config with such a major version jump, you'll meet
resistance if you ask us to do it for you.

Thanks,
Shawn