From 5081b0da06232f2221c1e9d600f95a66f06ea357 Mon Sep 17 00:00:00 2001 From: Reynold Xin Date: Tue, 5 Aug 2014 01:30:46 -0700 Subject: [PATCH] [SPARK-2856] Decrease initial buffer size for Kryo to 64KB. Author: Reynold Xin Closes #1780 from rxin/kryo-init-size and squashes the following commits: 551b935 [Reynold Xin] [SPARK-2856] Decrease initial buffer size for Kryo to 64KB. (cherry picked from commit 184048f80b6fa160c89d5bb47b937a0a89534a95) Signed-off-by: Reynold Xin --- .../scala/org/apache/spark/serializer/KryoSerializer.scala | 4 +++- docs/configuration.md | 2 +- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala b/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala index e60b802a86a14..407cb9db6ee9a 100644 --- a/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala +++ b/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala @@ -47,7 +47,9 @@ class KryoSerializer(conf: SparkConf) with Logging with Serializable { - private val bufferSize = conf.getInt("spark.kryoserializer.buffer.mb", 2) * 1024 * 1024 + private val bufferSize = + (conf.getDouble("spark.kryoserializer.buffer.mb", 0.064) * 1024 * 1024).toInt + private val maxBufferSize = conf.getInt("spark.kryoserializer.buffer.max.mb", 64) * 1024 * 1024 private val referenceTracking = conf.getBoolean("spark.kryo.referenceTracking", true) private val registrationRequired = conf.getBoolean("spark.kryo.registrationRequired", false) diff --git a/docs/configuration.md b/docs/configuration.md index 6ae453d09c5b2..5e7556c08ee36 100644 --- a/docs/configuration.md +++ b/docs/configuration.md @@ -420,7 +420,7 @@ Apart from these, the following properties are also available, and may be useful spark.kryoserializer.buffer.mb - 2 + 0.064 Initial size of Kryo's serialization buffer, in megabytes. Note that there will be one buffer per core on each worker. This buffer will grow up to