"This portlet is temporarily disabled." while rendering in parallel

Problem(Abstract)
After you enabled parallel portlet rendering, the error message "This portlet is temporarily disabled." is displayed for a portlet that is rendered in parallel. In this case the portal log file shows an exception with the message "PEEX0110E: The underlying pipe timed out while reading."

Cause
The portlet is rendered in a parallel thread and takes longer than the defined timeout to complete rendering. In this case WebSphere Portal displays an error message for the portlet and continues to render the rest of the page. Any output that the portlet might generate later will be discarded.

Resolving the problem
To resolve the problem, change the parameters on the consumer side of the WebSphere Portal server as follows:
Modify \shared\app\config\services\PortletContainerService.properties, and specify the following parameters:

std.useParallelRendering = true
parallelRenderingTimeOut = 10000


After modifying the parameters and restarting the WebSphere Portal server, you should no longer see the message "The portlet is temporarily disabled."

Ref -> http://www-01.ibm.com/support/docview.wss?uid=swg21197532
and http://www-01.ibm.com/support/docview.wss?uid=swg21177538