kezhenxu94 commented on pull request #6087:
URL: https://github.com/apache/dolphinscheduler/pull/6087#issuecomment-917009739


   > It seem standalone server could not work correct, it work fine days ago 
before I rebase to dev, did I miss something or some configure? @kezhenxu94 
   > 
   > 
   > 
   > ```log
   > 
   > Exception in thread "Standalone-Server" java.lang.RuntimeException: Load 
Alert Plugin Failed !
   > 
   >    at 
org.apache.dolphinscheduler.alert.AlertServer.initPlugin(AlertServer.java:100)
   > 
   >    at 
org.apache.dolphinscheduler.alert.AlertServer.start(AlertServer.java:119)
   > 
   >    at 
org.apache.dolphinscheduler.server.StandaloneServer.startAlertServer(StandaloneServer.java:80)
   > 
   >    at 
org.apache.dolphinscheduler.server.StandaloneServer.main(StandaloneServer.java:62)
   > 
   > Caused by: java.lang.ArrayIndexOutOfBoundsException: 29999
   > 
   >    at org.objectweb.asm.ClassReader.<init>(Unknown Source)
   > 
   >    at org.objectweb.asm.ClassReader.<init>(Unknown Source)
   > 
   >    at 
org.apache.dolphinscheduler.spi.plugin.DolphinPluginDiscovery.readClass(DolphinPluginDiscovery.java:125)
   > 
   >    at 
org.apache.dolphinscheduler.spi.plugin.DolphinPluginDiscovery.classInterfaces(DolphinPluginDiscovery.java:110)
   > 
   >    at 
org.apache.dolphinscheduler.spi.plugin.DolphinPluginDiscovery.lambda$discoverPluginsFromArtifact$0(DolphinPluginDiscovery.java:77)
   > 
   >    at 
java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174)
   > 
   >    at 
java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
   > 
   >    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
   > 
   >    at 
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
   > 
   >    at 
java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
   > 
   >    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
   > 
   >    at 
java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
   > 
   >    at 
org.apache.dolphinscheduler.spi.plugin.DolphinPluginDiscovery.discoverPluginsFromArtifact(DolphinPluginDiscovery.java:78)
   > 
   >    at 
org.apache.dolphinscheduler.spi.plugin.DolphinPluginLoader.buildPluginClassLoaderFromPom(DolphinPluginLoader.java:138)
   > 
   >    at 
org.apache.dolphinscheduler.spi.plugin.DolphinPluginLoader.buildPluginClassLoader(DolphinPluginLoader.java:123)
   > 
   >    at 
org.apache.dolphinscheduler.spi.plugin.DolphinPluginLoader.loadPlugin(DolphinPluginLoader.java:99)
   > 
   >    at 
org.apache.dolphinscheduler.spi.plugin.DolphinPluginLoader.loadPlugins(DolphinPluginLoader.java:92)
   > 
   >    at 
org.apache.dolphinscheduler.alert.AlertServer.initPlugin(AlertServer.java:98)
   > 
   >    ... 3 more
   > 
   > ```
   
   I suspect you are using old versions compiled classes of the previous plugin 
and after rebased the classes are not correct. Maybe try to rebuild the plugins?


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