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  1. WildFly
  2. WFLY-12631

Server doesn't start when DNS_PING is configured

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      Configuration:
      <protocol type="dns.DNS_PING">
      <property name="dns_query">eap-app-ping</property>
      <property name="async_discovery_use_separate_thread_per_request">true</property>
      </protocol>

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      Configuration: <protocol type="dns.DNS_PING"> <property name="dns_query">eap-app-ping</property> <property name="async_discovery_use_separate_thread_per_request">true</property> </protocol>

    Description

      NPE at start.
      The root cause is that <module name="sun.jdk"/> is missing from org.wildfly.clustering.service module.

      Exception:
      Caused by: java.lang.NullPointerException
      at org.jgroups.protocols.dns.DNS_PING.destroy(DNS_PING.java:70)
      at java.util.ArrayList.forEach(ArrayList.java:1257)
      at org.jgroups.stack.ProtocolStack.destroy(ProtocolStack.java:876)
      at org.jgroups.stack.ProtocolStack.initProtocolStack(ProtocolStack.java:867)
      at org.jgroups.stack.ProtocolStack.init(ProtocolStack.java:849)
      at org.jgroups.JChannel.<init>(JChannel.java:155)
      at org.jboss.as.clustering.jgroups.JChannelFactory.createChannel(JChannelFactory.java:116)
      at org.jboss.as.clustering.jgroups.subsystem.ChannelServiceConfigurator.get(ChannelServiceConfigurator.java:96)

      Hidden exception:
      Failed instantiate InitialContextFactory com.sun.jndi.dns.DnsContextFactory from classloader ModuleClassLoader for Module "org.wildfly.clustering.service" version 18.0.0.Final-SNAPSHOT from local module loader @2d3fcdbd (finder: local module finder @617c74e5 (roots: /home/jdenise/workspaces/wildfly-jfdenise/build/target/wildfly-18.0.0.Final-SNAPSHOT/modules,/home/jdenise/workspaces/wildfly-jfdenise/build/target/wildfly-18.0.0.Final-SNAPSHOT/modules/system/layers/base)) [Root exception is java.lang.ClassNotFoundException: com.sun.jndi.dns.DnsContextFactory from [Module "org.wildfly.clustering.service" version 18.0.0.Final-SNAPSHOT from local module loader @2d3fcdbd (finder: local module finder @617c74e5 (roots: /home/jdenise/workspaces/wildfly-jfdenise/build/target/wildfly-18.0.0.Final-SNAPSHOT/modules,/home/jdenise/workspaces/wildfly-jfdenise/build/target/wildfly-18.0.0.Final-SNAPSHOT/modules/system/layers/base))]]

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          causes

          Bug - A problem that impairs or prevents the functions of the product. WFLY-17975 DNS_PING loads its initial context factory from TCCL during channel creation.

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Open
          is caused by

          Task - Represents a small unit of work that is not end-user facing. WFLY-12505 Remove unnecessary module dependencies in clustering modules

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          is cloned by

          Bug - A problem that impairs or prevents the functions of the product. JBEAP-17724 Server doesn't start when DNS_PING is configured

          • Blocker - To be worked above all other priorities. This term is chosen when the severity of the issue is very high, has no workaround, or the effort for the change is comparatively low. Issues that may be very publicly visible and could generate significant media attention may also drive a higher priority.
          • Verified

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              pferraro@redhat.com Paul Ferraro
              jdenise@redhat.com Jean Francois Denise
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                Created:
                Updated:
                Resolved: