Zookeeper depends on log4j, thus also SolrCloud does
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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 Høydahl
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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