Hi Jyoti;
I assume this is the log of master vertex. It seems like master can not reach a worker for some reason. Did you also check the worker vertex's log? Maybe you can share it too.
Sertug

On 20-01-2014 09:22, Jyoti Yadav wrote:
*h.master.MasterThread: masterThread: Master algorithm failed with ArrayIndexOutOfBoundsException
java.lang.ArrayIndexOutOfBoundsException: -1*

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