[SPARK-17010][MINOR][DOC] Wrong description in memory management docu…

…ment ## What changes were proposed in this pull request? change the remain percent to right one. ## How was this patch tested? Manual review Author: Tao Wang <[email protected]> Closes apache#14591 from WangTaoTheTonic/patch-1. (cherry picked from commit 7a6a3c3) Signed-off-by: Reynold Xin <[email protected]>
jkbradley · Aug 11, 2016 · 1e40135 · 1e40135
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Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/tuning.md b/docs/tuning.md
@@ -115,7 +115,7 @@ Although there are two relevant configurations, the typical user should not need
 as the default values are applicable to most workloads:
 
 * `spark.memory.fraction` expresses the size of `M` as a fraction of the (JVM heap space - 300MB)
-(default 0.6). The rest of the space (25%) is reserved for user data structures, internal
+(default 0.6). The rest of the space (40%) is reserved for user data structures, internal
 metadata in Spark, and safeguarding against OOM errors in the case of sparse and unusually
 large records.
 * `spark.memory.storageFraction` expresses the size of `R` as a fraction of `M` (default 0.5).