: I am getting below error while doing "ant dist" . The build system (up to 4.10.1) was unintentinally requiring that javadoc jars existed -- and this recently manifested as a problem when this particular javadoc jar somehow fvanished from maven.org.
This issue tracks the fix which will be n 4.10.2... https://issues.apache.org/jira/browse/LUCENE-6007 Since hte missing jar is just javadocs, and are not actually needed to build/run anything, you can just create a dummy file to satisfy the dependency checker, using the "shard" path mentioned in the error... : [ivy:retrieve] ==== shared: tried : [ivy:retrieve] : /home/.ivy2/shared/javax.activation/activation/1.1.1/javadocs/activation.jar like so... mkdir -p /home/.ivy2/shared/javax.activation/activation/1.1.1/javadocs/ touch /home/.ivy2/shared/javax.activation/activation/1.1.1/javadocs/activation.jar -Hoss http://www.lucidworks.com/