Hi Uwe
I wondered about that but I don't think so. We use the Solr tar file for
Solr (i.e. not a debian provided package) and I've chcked the
dependencies for the debian java 7 package and can't spot anything ICU
related (see here:
https://packages.debian.org/wheezy/openjdk-7-jre-headless).
Debian to provide a "libicu4j-4.4-java" package but that isn't installed
on our system.
Charlie
On 09/10/2014 12:59, Uwe Schindler wrote:
Hi,
Could it be that the Debian Java 7 package or the Debian Solr package
somehow injects a different version of ICU by a dependency? Those
errors generally happen if you run into JAR hell (different versions
of the same package in classpath).
Uwe
-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de <http://www.thetaphi.de/>
eMail: [email protected]
*From:*Charlie Orford [mailto:[email protected]]
*Sent:* Thursday, October 09, 2014 1:46 PM
*To:* [email protected]
*Subject:* Moving to Java 7 on debian breaks ICU Normalizer2 on Solr
4.7.2 and Solr 4.10.1
Hi List
Posting here on the suggestion of steffkes in IRC.
We currently run a multicore Solr 4.7.2 installation on debian wheezy
using the debian provided "default-headless-jre" package for java
which is JDK 6 based. We also use some ICU filters in our schema.xml
files so we have icu4j-52.1.jar, lucene-analyzers-common-4.7.2.jar,
lucene-analyzers-icu-4.7.2.jar, lucene-analyzers-smartcn-4.7.2.jar,
lucene-analyzers-stempel-4.7.2.jar and solr-analysis-extras-4.7.2.jar
in our solr-home/lib folder.
We want to move to Solr 4.10.1 which needs Java 7.
Before upgrading Solr, we first uninstalled the "default-jre-headless"
package and then installed "openjdk-7-jre-headless" so the Java 7
dependency was met.
However, doing this causes Solr 4.7.2 to throw a core error on start:
"ERROR org.apache.solr.core.SolrCore Error loading
core:java.util.concurrent.ExecutionException:
java.lang.NoClassDefFoundError: com/ibm/icu/text/Normalizer2"
If we uninstall the "openjdk-7-jre-headless" package and re-install
the "default-headless-jre" package Solr 4.7.2 starts fine.
We've also tested a clean install of Solr 4.10.1 on a different
machine with the debian "openjdk-7-jre-headless" package installed
(and the 4.10.1 versions of the relevant lucene/solr ICU jar libs) and
encounter the same NoClassDefFoundError: com/ibm/icu/text/Normalizer2
error whenever we try to create a core that uses the
solr.ICUNormalizer2FilterFactory in its schema.
Unfortunately, we aren't Java people and only use it for Solr so we're
not sure how to debug this. Is the problem with the debian package? Is
the problem with icu4j-52.1.jar? Or is the problem something else
entirely?
Any insight appreciated!
Charlie
