Please see the following
in sql/core/src/main/scala/org/apache/spark/sql/SQLConf.scala :
val TUNGSTEN_ENABLED = booleanConf("spark.sql.tungsten.enabled",
defaultValue = Some(true),
doc = "When true, use the optimized Tungsten physical execution backend
which explicitly " +
"manages memory and dynamically generates bytecode for expression
evaluation.")
val CODEGEN_ENABLED = booleanConf("spark.sql.codegen",
defaultValue = Some(true), // use TUNGSTEN_ENABLED as default
doc = "When true, code will be dynamically generated at runtime for
expression evaluation in" +
" a specific query.",
isPublic = false)
val UNSAFE_ENABLED = booleanConf("spark.sql.unsafe.enabled",
defaultValue = Some(true), // use TUNGSTEN_ENABLED as default
doc = "When true, use the new optimized Tungsten physical execution
backend.",
isPublic = false)
Cheers
On Thu, Sep 10, 2015 at 7:39 AM, unk1102 <[email protected]> wrote:
> Hi Spark 1.5 looks promising how do we enable project tungsten for spark
> sql
> or is it enabled by default please guide.
>
>
>
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