zoukankan      html  css  js  c++  java
  • hdfs OutOfMemoryError

    大量推送本地文件到hdfs如下

    hadoop fs -put ${local_path} ${hdfs_path}报错。

    Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded
        at java.util.Arrays.copyOfRange(Arrays.java:3664)
        at java.lang.StringBuffer.toString(StringBuffer.java:669)
        at java.net.URI.toString(URI.java:1945)
        at java.net.URI.<init>(URI.java:742)
        at org.apache.hadoop.fs.Path.initialize(Path.java:202)
        at org.apache.hadoop.fs.Path.<init>(Path.java:196)
        at org.apache.hadoop.fs.Path.getPathWithoutSchemeAndAuthority(Path.java:80)
        at org.apache.hadoop.fs.shell.CommandWithDestination.checkPathsForReservedRaw(CommandWithDestination.java:355)
        at org.apache.hadoop.fs.shell.CommandWithDestination.copyFileToTarget(CommandWithDestination.java:322)
        at org.apache.hadoop.fs.shell.CommandWithDestination.processPath(CommandWithDestination.java:263)
        at org.apache.hadoop.fs.shell.CommandWithDestination.processPath(CommandWithDestination.java:248)
        at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:317)
        at org.apache.hadoop.fs.shell.Command.recursePath(Command.java:373)
        at org.apache.hadoop.fs.shell.CommandWithDestination.recursePath(CommandWithDestination.java:291)
        at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:319)
        at org.apache.hadoop.fs.shell.Command.recursePath(Command.java:373)
        at org.apache.hadoop.fs.shell.CommandWithDestination.recursePath(CommandWithDestination.java:291)
        at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:319)
        at org.apache.hadoop.fs.shell.Command.recursePath(Command.java:373)
        at org.apache.hadoop.fs.shell.CommandWithDestination.recursePath(CommandWithDestination.java:291)
        at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:319)
        at org.apache.hadoop.fs.shell.Command.recursePath(Command.java:373)
        at org.apache.hadoop.fs.shell.CommandWithDestination.recursePath(CommandWithDestination.java:291)
        at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:319)
        at org.apache.hadoop.fs.shell.Command.recursePath(Command.java:373)
        at org.apache.hadoop.fs.shell.CommandWithDestination.recursePath(CommandWithDestination.java:291)
        at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:319)
        at org.apache.hadoop.fs.shell.Command.recursePath(Command.java:373)
        at org.apache.hadoop.fs.shell.CommandWithDestination.recursePath(CommandWithDestination.java:291)
        at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:319)
        at org.apache.hadoop.fs.shell.Command.recursePath(Command.java:373)
        at org.apache.hadoop.fs.shell.CommandWithDestination.recursePath(CommandWithDestination.java:291)

    在hadoop命令下发现:

    hadoop-2.7.3/bin/hadoop:    exec "$JAVA" $JAVA_HEAP_MAX $HADOOP_OPTS $CLASS "$@"

    查找JAVA_HEAP_MAX

    发现

    hadoop-2.7.3/libexec/hadoop-config.sh:  JAVA_HEAP_MAX="-Xmx""$HADOOP_HEAPSIZE""m"

    继续查找HADOOP_HEAPSIZE

    发现

    hadoop-2.7.3/libexec/hadoop-config.sh:  JAVA_HEAP_MAX="-Xmx""$HADOOP_HEAPSIZE""m"

    以及

    hadoop-2.7.3/share/doc/hadoop/hadoop-project-dist/hadoop-common/ClusterSetup.html:<li><tt>HADOOP_HEAPSIZE</tt> / <tt>YARN_HEAPSIZE</tt> - The maximum amount of heapsize to use, in MB e.g. if the varibale is set to 1000 the heap will be set to 1000MB. This is used to configure the heap size for the daemon. By default, the value is 1000. If you want to configure the values separately for each deamon you can use.</li>
    <li>
        <tt>HADOOP_HEAPSIZE</tt>
        / <tt>YARN_HEAPSIZE</tt> - The maximum amount of heapsize to use, in MB e.g. if the varibale is set to 1000 the heap
        will be set to 1000MB. This is used to configure the heap size for the daemon. By default, the value is 1000. If you
        want to configure the values separately for each deamon you can use.
    </li>

    调整JVM堆的最大值:

    export HADOOP_HEAPSIZE=100000
  • 相关阅读:
    男子头部胀痛案
    摩这些穴位可以对付突发的疾病
    跟师学习时的几个经验方
    黄褐斑良方--- 疏肺散斑汤
    食积咳嗽的特点
    牙痛用药口决(来源于网络暂未验证)
    20多年脚气起泡脱皮瘙痒外洗方治验案
    起死回生通关散
    腰突辩治心得(付济华)
    战痘良方--付济华
  • 原文地址:https://www.cnblogs.com/suanec/p/9878612.html
Copyright © 2011-2022 走看看