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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (SOLR-2369) Zookeeper depends on log4j, thus also SolrCloud does
Date Thu, 17 Feb 2011 23:11:12 GMT

     [ https://issues.apache.org/jira/browse/SOLR-2369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yonik Seeley resolved SOLR-2369.
--------------------------------

    Resolution: Fixed

I've committed a patch that turns off zk's log4k mbean registration.  "Example C" now works
for me.

> Zookeeper depends on log4j, thus also SolrCloud does
> ----------------------------------------------------
>
>                 Key: SOLR-2369
>                 URL: https://issues.apache.org/jira/browse/SOLR-2369
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 3.1
>            Reporter: Jan H√łydahl
>              Labels: log4j, slf4j, zookeeper
>
> Reproduce:
> 1. Use default Solr example build (with JDK logging)
> 2. Run example C on http://wiki.apache.org/solr/SolrCloud
> 3. You get Exception:
>    java.lang.NoClassDefFoundError: org/apache/log4j/jmx/HierarchyDynamicMBean
>        at org.apache.zookeeper.jmx.ManagedUtil.registerLog4jMBeans(ManagedUtil.java:51)
>        at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:114)
>        at org.apache.solr.cloud.SolrZkServer$1.run(SolrZkServer.java:111)
> Probable reason:
> Zookeeper depends on log4j
> Quickfix:
> Switch to log4j logging (as you cannot include both log4j bridge and log4j):
> * Remove log4j-over-slf4j-1.5.5.jar and slf4j-jdk14-1.5.5.jar
> * Add slf4j-logj12.jar and log4j-1.2.16.jar
> Document the shortcoming in release notes
> Long term fix:
> Vote for the resolution of ZOOKEEPER-850 which switches ZK to slf4j logging

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