Github user eason-lyx commented on the issue:
https://github.com/apache/incubator-carbondata/pull/457
@Jay357089 previous implement multiple preferlocaton in case of one node
crush then will retry the task on the same node,can u verify if we just give
only one preferlocation, and hack the task failure,check whether the task will
always relaunch on the same node.
if spark can choose other node ,then it will be better keep only one
preferlocation owing to the data locality.
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