Method.invoke() has thrown a NullPointerException

java.lang.NullPointerException
Javadoc
Thrown when an application attempts to use {@code null} in a case where an object is required. These include:
  • Calling the instance method of a {@code null} object.
  • Accessing or modifying the field of a {@code null} object.
  • Taking the length of {@code null} as if it were an array.
  • Accessing or modifying the slots of {@code null} as if it were an array.
  • Throwing {@code null} as if it were a {@code Throwable} value.

Applications should throw instances of this class to indicate other illegal uses of the {@code null} object. {@code NullPointerException} objects may be constructed by the virtual machine as if {@linkplain Throwable#Throwable(String, Throwable, boolean, boolean) suppression were disabled and/or the stack trace was not writable}. @author unascribed @since JDK1.0

at org.apache.hadoop.chukwa.rest.bean.WidgetBean.<init>
at org.apache.hadoop.chukwa.datastore.WidgetStore.cacheWidgets
at org.apache.hadoop.chukwa.datastore.WidgetStore.list
at org.apache.hadoop.chukwa.rest.bean.WidgetBean.update
at org.apache.hadoop.chukwa.rest.bean.ColumnBean.update
at org.apache.hadoop.chukwa.rest.bean.PagesBean.update
at org.apache.hadoop.chukwa.rest.bean.ViewBean.update
at org.apache.hadoop.chukwa.datastore.ViewStore.load
at org.apache.hadoop.chukwa.datastore.ViewStore.<init>
at org.apache.hadoop.chukwa.rest.resource.ViewResource.getView
at sun.reflect.NativeMethodAccessorImpl.invoke0
(source)
at sun.reflect.NativeMethodAccessorImpl.invoke
(source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke
(source)
at java.lang.reflect.Method.invoke
(source)
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Typical Exception Messages

  1. <No message>

Origin

ViewResource.getView() has thrown a NullPointerException

java.lang.NullPointerException
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org.apache.hadoop.chukwa.rest.resource.ViewResource.getView
16Web pages

Specific cases

External results for this pattern (6)

  1. Prakhar Srivastavavia incubator-chukwa-user1 month ago
    No message found for this stack trace.
    Show stack trace
  2. Eric Yangvia incubator-chukwa-user1 month ago
    No message found for this stack trace.
    Show stack trace
  3. Eric Yangvia incubator-chukwa-user2 months ago
    No message found for this stack trace.
    Show stack trace
  4. Eric Yangvia incubator-chukwa-user2 years ago
    No message found for this stack trace.
    Show stack trace
  5. Prakhar Srivastavavia incubator-chukwa-user2 years ago
    No message found for this stack trace.
    Show stack trace
  6. Eric Yangvia incubator-chukwa-user2 years ago
    No message found for this stack trace.
    Show stack trace