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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/03/19 16:55:43 UTC
[jira] [Assigned] (SPARK-19991) FileSegmentManagedBuffer
performance improvement.
[ https://issues.apache.org/jira/browse/SPARK-19991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-19991:
------------------------------------
Assignee: Apache Spark
> FileSegmentManagedBuffer performance improvement.
> -------------------------------------------------
>
> Key: SPARK-19991
> URL: https://issues.apache.org/jira/browse/SPARK-19991
> Project: Spark
> Issue Type: Improvement
> Components: Shuffle
> Affects Versions: 2.0.2, 2.1.0
> Reporter: Guoqiang Li
> Assignee: Apache Spark
> 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}
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