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Chukwa >> mail # user >> Chukwa collector confronted with a NPE

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Chukwa collector confronted with a NPE
Exception in thread "Thread-332" java.lang.NullPointerException
        at java.lang.Thread.run(Thread.java:662)
2011-11-16 02:44:07,147 INFO Thread-6 SocketTeeWriter - got connection from

And the is our hadoop cluster.

This exception arises very frequently , every 5 mins.

But the collector seemed doesn't been influenced .

Why this exception arises? Is there something wrong with the hadoop?

Best regards,

Ivy Tang