Error: Java heap space

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在chd中的hive中执行 (select count (*)) 或者mr程序都报Error: Java heap space 4.io.sort.mb 的作用排序所使用的内存数量. 默认值:100M,需要与mapred.child.java.opts相配默认:-Xmx200m. 不能超过mapred.child.java.opt设置,否则会OOM. 调整mapred.child.java.opts的大小没有效果,调整set mapreduce.task.io.sort.mb=10…

Hive Error : Java heap space 解决方案

Java heap space问题一般解决方案: 设置 set io.sort.mb=10; 排序所使用的内存数量,默认值是100M,和mapred.child.java.opts相对应,opts默认:-Xmx200m,则mb不能超过200M,否则会OOM. 设置 set hive.map.aggr=true; 是否在 Map 端进行聚合,默认为True,会在map端进行部分数据端聚合操作. (可选)hive.groupby.mapaggr.checkinterval =100000; Map端…

An internal error has occurred. Java heap space

http://stackoverflow.com/questions/11001252/running-out-of-heap-space issue: I am having a heap space problem. My program is simple. There are two actors (send & receive) "send" actor is passing 10000 objects per second to "receive"…

Hadoop on Mac with IntelliJ IDEA - 5 解决java heap space问题

本文讲述在CentOS 6.5中提交作业到hadoop 1.2.1于reduce阶段遇到Error: java heap space错误导致作业重新计算的解决过程.解决办法适用Linux.Mac OS X 和Windows操作系统. 环境:Mac OS X 10.9.5, IntelliJ IDEA 13.1.4, Hadoop 1.2.1 Hadoop放在虚拟机中,宿主机通过SSH连接,IDE和数据文件在宿主机.IDEA自身运行于JDK 1.8,IDEA工程及Hadoop使用JDK 1.6.…

Five Steps to Avoiding Java Heap Space Errors

来自:https://www.mapr.com/blog/how-to-avoid-java-heap-space-errors-understanding-and-managing-task-attempt-memory#.VMWvNDGUfXY Keeping these five steps in mind can save you a lot of headaches and avoid Java heap space errors. Calculate memory needed. C…

Java heap space cdh 5.11.1

在执行hive count 查询的时候报错:Error: Java heap space 解决办法是 set io.sort.mb=10; 执行hadoop的Exeample的时候报错,也是java heap space 的问题 Diagnostic Messages for this Task:Error: Java heap space FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.…