It should be related to Hadoop.In what mode you're running Hadoop? You may need distributed mode to achieve multiple workers. I don't remember the reason but I had the same problem and have been testing my codes with 1 worker. But it should run on a cluster with multiple workers.
On 07/09/2013 01:15 PM, Wonbae Kim wrote:
However, when I increase the number of workers , like 2, map tasks were killed.How can I increase the number of workers?
