答复：RACK_LOCAL Tasks Failed to finish

[洪奇]

I just running PageRank(included in GraphX) on a dataset which has 55876487 
edges. I submit the application to YARN with options`--num-executors 30 
--executor-memory 30g --driver-memory 10g --executor-cores 8`.

Thanks------------------------------------------------------------------发件人：Ankur
 Dave <ankurd...@gmail.com>发送时间：2014年7月15日(星期二) 11:52收件人：user 
<user@spark.apache.org>，李奇平(洪奇) <qiping....@alibaba-inc.com>主　题：Re: RACK_LOCAL 
Tasks Failed to finish
What GraphX application are you running? If it's a custom application that 
calls RDD.unpersist, that might cause RDDs to be recomputed. It's tricky to do 
unpersisting correctly, so you might try not unpersisting and see if that helps.

Ankur