This is a bug in Hadoop 2.6.0. It's been marked as fixed but it still happens occasionally (see: https://issues.apache.org/jira/browse/YARN-2624). 

Clearing out the appcache directory and restarting the YARN daemons should most likely fix this. 

hadoop complains about attempting to overwrite nonempty destination directory
In memory allocation window of Code composer studio 6.1 I see 288 bytes of .CIO section. 
What is this segment and how I can remove it.
Linker file lnk_msp430f2619 has mention of .CIO section. But where I can make this zero byte section. 

 .bss        : {} &gt; RAM                  /* Global &amp; static vars              */
    .data       : {} &gt; RAM                  /* Global &amp; static vars              */
    .TI.noinit  : {} &gt; RAM                  /* For #pragma noinit                */
    .sysmem     : {} &gt; RAM                  /* Dynamic memory allocation area    */
    .stack      : {} &gt; RAM (HIGH)           /* Software system stack             */

#ifndef __LARGE_DATA_MODEL__
    .text       : {}&gt;&gt; FLASH                /* Code                              */
#else
    .text       : {}&gt;&gt; FLASH2 | FLASH       /* Code                              */
#endif
    .text:_isr  : {} &gt; FLASH                /* ISR Code space                    */
    .cinit      : {} &gt; FLASH                /* Initialization tables             */
#ifndef __LARGE_DATA_MODEL__
    .const      : {} &gt; FLASH                /* Constant data                     */
#else
    .const      : {} &gt; FLASH | FLASH2       /* Constant data                     */
#endif
    .cio        : {} &gt; RAM                  /* C I/O Buffer                      *


/
