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https://issues.apache.org/jira/browse/SOLR-17168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17818821#comment-17818821
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Jan Høydahl commented on SOLR-17168:
------------------------------------
Thanks for reporting this. Are you able to provide a Pull Request? It will
likely not trigger an immediate 8.11.4 release, but if more things pile up then
perhaps later?
The obvious workaround is of course to install the missing jar manually or to
do a custom build from source.
> Netty epoll implementation not included in 8.11.3
> -------------------------------------------------
>
> Key: SOLR-17168
> URL: https://issues.apache.org/jira/browse/SOLR-17168
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 8.11.3
> Reporter: Colvin Cowie
> Priority: Minor
>
> Solr 8.11.3 updated netty from 4.1.69 to 4.1.99.
> While it still contains the [netty-transport-native-epoll
> dependency,|https://github.com/apache/lucene-solr/blob/9ebfd2b0a584faa072685fff4956f05b52e60d7c/lucene/ivy-versions.properties#L120-L129]
> the epoll implementation moved to a [separate
> jar|https://mvnrepository.com/artifact/io.netty/netty-transport-classes-epoll]
> in netty 4.1.70.
> That jar is included in Solr 9, but it's not been added to the ivy-versions
> used in Solr 8.
> As a result, attemping to use Netty for SSL results in an exception:
> {quote}{{2024-02-20T09:53:17.350:out: Caused by:
> java.lang.NoClassDefFoundError: io/netty/channel/epoll/Epoll
> 2024-02-20T09:53:17.352:out: at
> org.apache.zookeeper.common.NettyUtils.newNioOrEpollEventLoopGroup(NettyUtils.java:74)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.353:out: at
> org.apache.zookeeper.ClientCnxnSocketNetty.<init>(ClientCnxnSocketNetty.java:86)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.355:out: at
> jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method) ~[?:?]
> 2024-02-20T09:53:17.357:out: at
> jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> ~[?:?]
> 2024-02-20T09:53:17.358:out: at
> jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> ~[?:?]
> 2024-02-20T09:53:17.360:out: at
> java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[?:?]
> 2024-02-20T09:53:17.361:out: at
> org.apache.zookeeper.ZooKeeper.getClientCnxnSocket(ZooKeeper.java:3404)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.363:out: at
> org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:1027)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.364:out: at
> org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:937)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.366:out: at
> org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:1108)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.368:out: at
> org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:818)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.369:out: at
> org.apache.solr.common.cloud.SolrZooKeeper.<init>(SolrZooKeeper.java:44)
> ~[solr-solrj-8.11.3.jar:8.11.3 baa7c80af4278cc8951a344d8e9320386588d12d -
> houstonputman - 2024-02-05 15:08:47]
> 2024-02-20T09:53:17.371:out: at
> org.apache.solr.common.cloud.ZkClientConnectionStrategy.createSolrZooKeeper(ZkClientConnectionStrategy.java:109)
> ~[solr-solrj-8.11.3.jar:8.11.3 baa7c80af4278cc8951a344d8e9320386588d12d -
> houstonputman - 2024-02-05 15:08:47]
> 2024-02-20T09:53:17.372:out: at
> org.apache.solr.common.cloud.DefaultConnectionStrategy.connect(DefaultConnectionStrategy.java:37)
> ~[solr-solrj-8.11.3.jar:8.11.3 baa7c80af4278cc8951a344d8e9320386588d12d -
> houstonputman - 2024-02-05 15:08:47]
> 2024-02-20T09:53:17.374:out: at
> org.apache.solr.common.cloud.SolrZkClient.<init>(SolrZkClient.java:166)
> ~[solr-solrj-8.11.3.jar:8.11.3 baa7c80af4278cc8951a344d8e9320386588d12d -
> houstonputman - 2024-02-05 15:08:47]
> 2024-02-20T09:53:17.375:out: ... 7 more
> 2024-02-20T09:53:17.377:out: Caused by: java.lang.ClassNotFoundException:
> io.netty.channel.epoll.Epoll
> 2024-02-20T09:53:17.379:out: at
> jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
> ~[?:?]
> 2024-02-20T09:53:17.381:out: at
> jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
> ~[?:?]
> 2024-02-20T09:53:17.382:out: at
> java.lang.ClassLoader.loadClass(ClassLoader.java:527) ~[?:?]
> 2024-02-20T09:53:17.384:out: at
> org.apache.zookeeper.common.NettyUtils.newNioOrEpollEventLoopGroup(NettyUtils.java:74)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.386:out: at
> org.apache.zookeeper.ClientCnxnSocketNetty.<init>(ClientCnxnSocketNetty.java:86)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.387:out: at
> jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method) ~[?:?]
> 2024-02-20T09:53:17.389:out: at
> jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> ~[?:?]
> 2024-02-20T09:53:17.391:out: at
> jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> ~[?:?]
> 2024-02-20T09:53:17.392:out: at
> java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[?:?]
> 2024-02-20T09:53:17.394:out: at
> org.apache.zookeeper.ZooKeeper.getClientCnxnSocket(ZooKeeper.java:3404)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.396:out: at
> org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:1027)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.397:out: at
> org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:937)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.399:out: at
> org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:1108)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.401:out: at
> org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:818)
> ~[zookeeper-3.6.2.jar:3.6.2]
> 2024-02-20T09:53:17.402:out: at
> org.apache.solr.common.cloud.SolrZooKeeper.<init>(SolrZooKeeper.java:44)
> ~[solr-solrj-8.11.3.jar:8.11.3 baa7c80af4278cc8951a344d8e9320386588d12d -
> houstonputman - 2024-02-05 15:08:47]
> 2024-02-20T09:53:17.404:out: at
> org.apache.solr.common.cloud.ZkClientConnectionStrategy.createSolrZooKeeper(ZkClientConnectionStrategy.java:109)
> ~[solr-solrj-8.11.3.jar:8.11.3 baa7c80af4278cc8951a344d8e9320386588d12d -
> houstonputman - 2024-02-05 15:08:47]
> 2024-02-20T09:53:17.406:out: at
> org.apache.solr.common.cloud.DefaultConnectionStrategy.connect(DefaultConnectionStrategy.java:37)
> ~[solr-solrj-8.11.3.jar:8.11.3 baa7c80af4278cc8951a344d8e9320386588d12d -
> houstonputman - 2024-02-05 15:08:47]
> 2024-02-20T09:53:17.407:out: at
> org.apache.solr.common.cloud.SolrZkClient.<init>(SolrZkClient.java:166)
> ~[solr-solrj-8.11.3.jar:8.11.3 baa7c80af4278cc8951a344d8e9320386588d12d -
> houstonputman - 2024-02-05 15:08:47]
> 2024-02-20T09:53:17.409:out: ... 7 more}}
> {quote}
>
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