Rustam Abdullaev created NUTCH-2641:
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Summary: ClassCastException in webui
Key: NUTCH-2641
URL: https://issues.apache.org/jira/browse/NUTCH-2641
Project: Nutch
Issue Type: Bug
Affects Versions: 2.4
Reporter: Rustam Abdullaev
webui 2.x constantly logs this exception whenever the status of a crawl changes:
{noformat}
java.lang.ClassCastException: org.apache.nutch.webui.client.model.JobInfo$State
cannot be cast to [Ljava.lang.Object;
at java.text.MessageFormat.format(MessageFormat.java:865)
at java.text.Format.format(Format.java:157)
at
org.apache.nutch.webui.client.impl.RemoteCommand.toString(RemoteCommand.java:72)
at
org.slf4j.helpers.MessageFormatter.safeObjectAppend(MessageFormatter.java:305)
at
org.slf4j.helpers.MessageFormatter.deeplyAppendParameter(MessageFormatter.java:277)
at org.slf4j.helpers.MessageFormatter.arrayFormat(MessageFormatter.java:231)
at org.slf4j.helpers.MessageFormatter.format(MessageFormatter.java:124)
at org.slf4j.impl.Log4jLoggerAdapter.info(Log4jLoggerAdapter.java:322)
at
org.apache.nutch.webui.client.impl.CrawlingCycle.executeCrawlCycle(CrawlingCycle.java:63)
at
org.apache.nutch.webui.service.impl.CrawlServiceImpl.startCrawl(CrawlServiceImpl.java:71)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at
org.springframework.aop.interceptor.AsyncExecutionInterceptor$1.call(AsyncExecutionInterceptor.java:97)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748){noformat}
The issue is in RemoteCommand, line 72. The arguments to MessageFormat.format()
should be in an array, even when there is only one.
{code:java}
statusInfo = new MessageFormat("{0}", Locale.ROOT).format(new Object[]
{jobInfo.getState()});
{code}
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