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From Mich Talebzadeh <>
Subject Re: how to tuning spark shuffle
Date Mon, 18 Jul 2016 09:57:46 GMT

Can you print out the environment tab on your UI.

By default spark-sql runs on local mode which means that you only have one
driver and one executor in one jvm. Do you increase the executor memory

SET spark.executor.memory=xG

And adjust it and run the SQL again.


Dr Mich Talebzadeh

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On 18 July 2016 at 08:16, leezy <> wrote:

> hi:
> i am run a join operation in the spark-sql, But when i increase the
> executor-memory, the run time become long. In the spark UI, i can see that
> the shuffle becomes slowly when the memory becomes big. How can i to tune
> it?
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