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Posted to solr-user@lucene.apache.org by tomw <to...@ubilix.com> on 2012/11/14 16:42:25 UTC
How to change the Solr 4.0 index format?
Hi folks,
I was trying to use an index created by Solr 4.0 by mahout. However,
creating the vectors like:
bin/mahout lucene.vector -d ~/apache-solr-4.0.0/example/solr/data/index
--output /tmp/mahout/vectors --field text --idField id
--dictOut /tmp/mahout/dict.txt --norm 2
fails with an error:
Exception in thread "main"
org.apache.lucene.index.IndexFormatTooOldException: Format version is
not supported
which is kind of surprising as the entire stack is the latest one
available. Does it mean that Solr is creating the index in some kind of
old format? Is it possible to change the format? So far I have not found
any entry in the config files which would indicate that.
Any idea?
Thanks,
--tomw
Re: How to change the Solr 4.0 index format?
Posted by tomw <to...@ubilix.com>.
On Mi, 2012-11-14 at 18:50 +0200, Artem Lokotosh wrote:
> See https://issues.apache.org/jira/browse/MAHOUT-1112
> Seems mahout doesn't yet support lucene 4.0
>
That indeed seems to be the reason. Running the test with solr 3.6.1
works fine.
thanks,
--tomw
Re: How to change the Solr 4.0 index format?
Posted by Artem Lokotosh <ar...@gmail.com>.
See https://issues.apache.org/jira/browse/MAHOUT-1112
Seems mahout doesn't yet support lucene 4.0
On Wed, Nov 14, 2012 at 6:38 PM, Jack Krupansky <ja...@basetechnology.com> wrote:
> Check the dates for the Solr/Lucene jars - they might be an early snapshot
> before the index format stabilized.
>
> Or, maybe that Mahout sub-project had a copy of some old Lucene data.
> Keeping old Lucene data around as opposed to reindexing is a rather bad
> idea.
>
> -- Jack Krupansky
>
> -----Original Message----- From: tomw
> Sent: Wednesday, November 14, 2012 8:17 AM
> To: solr-user@lucene.apache.org
> Subject: Re: How to change the Solr 4.0 index format?
>
>
> On Mi, 2012-11-14 at 17:57 +0200, Artem Lokotosh wrote:
>>
>> > Does it mean that Solr is creating the index in some kind of
>> > old format? Is it possible to change the format?
>>
>> Try this
>>
>> http://lucene.apache.org/core/4_0_0/core/org/apache/lucene/index/IndexUpgrader.html
>>
>
> I'm wondering why a newly created index, created with the latest release
> of solr 4.0 is "too old". Am I missing some config options? In
> particular as it states:
>
> This version of Lucene only supports indexes created with release 1.9
> and later.
>
> which is way back. Either it's a bug or some configuration or
> installation went wrong.
>
> --tomw
>
>
>
--
Best regards,
Artem Lokotosh mailto:arconen@gmail.com
Re: How to change the Solr 4.0 index format?
Posted by Jack Krupansky <ja...@basetechnology.com>.
Check the dates for the Solr/Lucene jars - they might be an early snapshot
before the index format stabilized.
Or, maybe that Mahout sub-project had a copy of some old Lucene data.
Keeping old Lucene data around as opposed to reindexing is a rather bad
idea.
-- Jack Krupansky
-----Original Message-----
From: tomw
Sent: Wednesday, November 14, 2012 8:17 AM
To: solr-user@lucene.apache.org
Subject: Re: How to change the Solr 4.0 index format?
On Mi, 2012-11-14 at 17:57 +0200, Artem Lokotosh wrote:
> > Does it mean that Solr is creating the index in some kind of
> > old format? Is it possible to change the format?
>
> Try this
> http://lucene.apache.org/core/4_0_0/core/org/apache/lucene/index/IndexUpgrader.html
>
I'm wondering why a newly created index, created with the latest release
of solr 4.0 is "too old". Am I missing some config options? In
particular as it states:
This version of Lucene only supports indexes created with release 1.9
and later.
which is way back. Either it's a bug or some configuration or
installation went wrong.
--tomw
Re: How to change the Solr 4.0 index format?
Posted by tomw <to...@ubilix.com>.
On Mi, 2012-11-14 at 17:57 +0200, Artem Lokotosh wrote:
> > Does it mean that Solr is creating the index in some kind of
> > old format? Is it possible to change the format?
>
> Try this
> http://lucene.apache.org/core/4_0_0/core/org/apache/lucene/index/IndexUpgrader.html
>
I'm wondering why a newly created index, created with the latest release
of solr 4.0 is "too old". Am I missing some config options? In
particular as it states:
This version of Lucene only supports indexes created with release 1.9
and later.
which is way back. Either it's a bug or some configuration or
installation went wrong.
--tomw
Re: How to change the Solr 4.0 index format?
Posted by Artem Lokotosh <ar...@gmail.com>.
> Does it mean that Solr is creating the index in some kind of
> old format? Is it possible to change the format?
Try this
http://lucene.apache.org/core/4_0_0/core/org/apache/lucene/index/IndexUpgrader.html
On Wed, Nov 14, 2012 at 5:42 PM, tomw <to...@ubilix.com> wrote:
> Hi folks,
>
> I was trying to use an index created by Solr 4.0 by mahout. However,
> creating the vectors like:
>
> bin/mahout lucene.vector -d ~/apache-solr-4.0.0/example/solr/data/index
> --output /tmp/mahout/vectors --field text --idField id
> --dictOut /tmp/mahout/dict.txt --norm 2
>
> fails with an error:
>
> Exception in thread "main"
> org.apache.lucene.index.IndexFormatTooOldException: Format version is
> not supported
>
> which is kind of surprising as the entire stack is the latest one
> available. Does it mean that Solr is creating the index in some kind of
> old format? Is it possible to change the format? So far I have not found
> any entry in the config files which would indicate that.
>
>
> Any idea?
>
> Thanks,
>
> --tomw
>
>
>
--
Best regards,
Artem Lokotosh mailto:arconen@gmail.com