相关疑难解决方法(0)

我试图用一个大表(10G)和小表(230 MB)执行地图方面.使用小i将在连接键列后使用所有列来生成输出记录

我用过以下设置

set hive.auto.convert.join = true;

set hive.mapjoin.smalltable.filesize = 262144000;

日志:

**2013-09-20 02:43:50     Starting to launch local task to process map join;      maximum       memory = 1065484288

2013-09-20 02:44:05     Processing rows:        200000  Hashtable size: 199999  Memory usage:   430269904       rate:0.404

2013-09-20 02:44:14     Processing rows:        300000  Hashtable size: 299999  Memory usage:   643070664       rate:0.604

Exception in thread "Thread-0" java.lang.OutOfMemoryError: Java heap space
        at java.util.jar.Manifest$FastInputStream.<init>(Manifest.java:313)
        at java.util.jar.Manifest$FastInputStream.<init>(Manifest.java:308)
        at java.util.jar.Manifest.read(Manifest.java:176)
        at java.util.jar.Manifest.<init>(Manifest.java:50)
        at java.util.jar.JarFile.getManifestFromReference(JarFile.java:168)
        at java.util.jar.JarFile.getManifest(JarFile.java:149)
        at sun.misc.URLClassPath$JarLoader$2.getManifest(URLClassPath.java:696)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:228)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
        at …