You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Guoqiang Li (JIRA)" <ji...@apache.org> on 2017/03/17 03:17:41 UTC
[jira] [Created] (SPARK-19991) FileSegmentManagedBuffer performance
improvement.
Guoqiang Li created SPARK-19991:
-----------------------------------
Summary: FileSegmentManagedBuffer performance improvement.
Key: SPARK-19991
URL: https://issues.apache.org/jira/browse/SPARK-19991
Project: Spark
Issue Type: Improvement
Components: Shuffle
Affects Versions: 2.1.0, 2.0.2
Reporter: Guoqiang Li
Priority: Minor
When we do not set the value of the configuration items `{{spark.storage.memoryMapThreshold}} and {{spark.shuffle.io.lazyFD}},
each call to the cFileSegmentManagedBuffer.nioByteBuffer or FileSegmentManagedBuffer.createInputStream method creates a NoSuchElementException instance. This is a more time-consuming operation.
The shuffle-server thread`s stack:
{noformat}
"shuffle-server-2-42" #335 daemon prio=5 os_prio=0 tid=0x00007f71e4507800 nid=0x28d12 runnable [0x00007f71af93e000]
java.lang.Thread.State: RUNNABLE
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Throwable.java:783)
- locked <0x00000007a930f080> (a java.util.NoSuchElementException)
at java.lang.Throwable.<init>(Throwable.java:265)
at java.lang.Exception.<init>(Exception.java:66)
at java.lang.RuntimeException.<init>(RuntimeException.java:62)
at java.util.NoSuchElementException.<init>(NoSuchElementException.java:57)
at org.apache.spark.network.yarn.util.HadoopConfigProvider.get(HadoopConfigProvider.java:38)
at org.apache.spark.network.util.ConfigProvider.get(ConfigProvider.java:31)
at org.apache.spark.network.util.ConfigProvider.getBoolean(ConfigProvider.java:50)
at org.apache.spark.network.util.TransportConf.lazyFileDescriptor(TransportConf.java:157)
at org.apache.spark.network.buffer.FileSegmentManagedBuffer.convertToNetty(FileSegmentManagedBuffer.java:132)
at org.apache.spark.network.protocol.MessageEncoder.encode(MessageEncoder.java:54)
at org.apache.spark.network.protocol.MessageEncoder.encode(MessageEncoder.java:33)
at org.spark_project.io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:88)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:743)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:735)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:820)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:728)
at org.spark_project.io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:284)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:743)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:806)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:818)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:799)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:835)
at org.spark_project.io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1017)
at org.spark_project.io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:256)
at org.apache.spark.network.server.TransportRequestHandler.respond(TransportRequestHandler.java:194)
at org.apache.spark.network.server.TransportRequestHandler.processFetchRequest(TransportRequestHandler.java:135)
at org.apache.spark.network.server.TransportRequestHandler.handle(TransportRequestHandler.java:105)
at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:119)
at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:51)
at org.spark_project.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:367)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:353)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:346)
at org.spark_project.io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:367)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:353)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:346)
at org.spark_project.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:367)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:353)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:346)
at org.apache.spark.network.util.TransportFrameDecoder.channelRead(TransportFrameDecoder.java:85)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:367)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:353)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:346)
at org.spark_project.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:367)
at org.spark_project.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:353)
at org.spark_project.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
at org.spark_project.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
{noformat}
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org