Hi, San
You need to provide more information to diagnose this problem, like :
1. What kind of SQL did you execute?
2. If there are some |group| operation in this SQL, could you do some
statistic about how many unique group keys in this case?
On 1/26/15 17:01, luohui20...@sina.com wrote:
Hi there,
When running a sql query, i found abnormal time cost of tasks
like the attached pic. it runs fast in the first few tasks, but
extremely slow in later tasks, which speed 100X more time than early
ones.However,they are dealing with same size data at 128mb....
standalone & pseudo distributed cluster
executor memory:40g
driver momory:5g
Any advices will be appreciated.
--------------------------------
Thanks&Best regards!
罗辉 San.Luo
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