Cannot Create Space Due to NoClassDefFoundError
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
Deployed confluence using the IcedTea JDK.
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Cause:
java.lang.RuntimeException: java.lang.NoClassDefFoundError: Could not initialize class org.apache.lucene.index.SegmentReader
at com.atlassian.xwork.interceptors.XWorkTransactionInterceptor.intercept(XWorkTransactionInterceptor.java:115)
caused by: java.lang.NoClassDefFoundError: Could not initialize class org.apache.lucene.index.SegmentReader
at org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:1867)
Stack Trace: [hide]
Cause
IcedTea is not compatible with certain libraries that are used within Confluence.
Resolution
Switch to a Oracle Sun JVM.
Updated on April 8, 2025
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