Hello Demai,

Have you seen any thing else going on the master, e.g. high cpu load? Can
you try to get a jstack of the HBase master next time you experience this
issue? Also how many regions you have in this cluster and how many RPC
handlers have you configured for the master?

Cloudera, Inc.

On Mon, May 26, 2014 at 9:41 AM, Demai Ni <[EMAIL PROTECTED]> wrote:
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