[Hadoop-common-user] Shuffle error

Hey, every one

I have a problem when I run hadoop programs. Some of my worker nodes always
report following "Shuffle Error".

Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.

I tried to find out whether this is caused by certain nodes' hardware. For
example, memory, hard drive. But it looks like any of the worker nodes
incline to have this error. I am using 0.20.1.

Any suggestion will be appreciated!

--
Best Wishes！
顺送商祺！

－－
Chen He
(402)613-9298
PhD. student of CSE Dept.
Holland Computing Center
University of Nebraska-Lincoln
Lincoln NE 68588