Java hadoop reducer上的JVM崩溃
我正在hadoop上运行java代码,但遇到以下错误:Java hadoop reducer上的JVM崩溃,java,hadoop,jvm,Java,Hadoop,Jvm,我正在hadoop上运行java代码,但遇到以下错误: # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00007f2ffe7e1904, pid=31718, tid=139843231057664 # # JRE version: Java(TM) SE Runtime Environment (8.0_72-b15) (build 1.8.0_72
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f2ffe7e1904, pid=31718, tid=139843231057664
#
# JRE version: Java(TM) SE Runtime Environment (8.0_72-b15) (build 1.8.0_72-b15)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.72-b15 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# V [libjvm.so+0x813904] PhaseIdealLoop::build_loop_late_post(Node*)+0x144
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /hadoop/nm-local-dir/usercache/ihradmin/appcache/application_1479451766852_3736/container_1479451766852_3736_01_000144/hs_err_pid31718.log
#
# Compiler replay data is saved as:
# /hadoop/nm-local-dir/usercache/ihradmin/appcache/application_1479451766852_3736/container_1479451766852_3736_01_000144/replay_pid31718.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
当我转到节点管理器时,所有日志都被聚合,因为warn.log-aggregation-enable为true
,并且找不到日志hs_err_pid31718.log和replay_pid31718.log
通常情况下,1)reducer运行几分钟后JVM崩溃,2)reducer的自动重试有时会成功,3)某些reducer可以成功而不失败
Hadoop版本是2.6.0,Java是Java8。这不是一个新的环境,我们有很多作业在集群上运行
我的问题是:
-XX:+HeapDumpOnOutOfMemoryError-XX:HeapDumpPath=/tmp
此参数,但没有在主机上转储的堆无法完成reduce任务-XX:ErrorFile=/hs\u err\u pid.log
将hs\u错误文件位置设置为首选位置请从升级到最新版本以避免此崩溃。这样做,JVM崩溃在升级我们的JDK of hadoop环境时得到解决,尽管我仍然想知道为什么每次都不会发生此崩溃,因为我们使用相同的业务代码和输入。崩溃是由于编译器试图构建理想的图形,编译器将在运行时进行优化和内联,所以它并不总是可复制的。我希望一切都会清楚明白了真的很有帮助。