Question

启动graphdb时，日志会报告org.springframework.cglib.core.ReflectUtils中lib/spring-core-5.0.4.RELEASE.jar进行非法反射访问操作的一些警告，然后在以下位置暂停提示：

[INFO ] 2018-11-19 17:02:34,109 [main | c.o.g.Config] Using 'file:/home/ubuntu/graphdb-free-8.7.2/conf/logback.xml' as logback's configuration file for graphdb
[INFO ] 2018-11-19 17:02:34,427 [main | c.o.g.s.GraphDB] Starting GraphDB in workbench mode.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils$1 (file:/home/ubuntu/graphdb-free-8.7.2/lib/spring-core-5.0.4.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[INFO ] 2018-11-19 17:02:39,572 [main | c.o.g.Config] GraphDB Home directory: /home/ubuntu/graphdb-free-8.7.2
[INFO ] 2018-11-19 17:02:39,572 [main | c.o.g.Config] GraphDB Config directory: /home/ubuntu/graphdb-free-8.7.2/conf
[INFO ] 2018-11-19 17:02:39,573 [main | c.o.g.Config] GraphDB Data directory: /home/ubuntu/graphdb-free-8.7.2/data
[INFO ] 2018-11-19 17:02:39,573 [main | c.o.g.Config] GraphDB Work directory: /home/ubuntu/graphdb-free-8.7.2/work
[INFO ] 2018-11-19 17:02:39,573 [main | c.o.g.Config] GraphDB Logs directory: /home/ubuntu/graphdb-free-8.7.2/logs

大约8到13分钟后，日志将报告会话ID生成过程已完成并且已部署服务器：

[WARN ] 2018-11-19 16:38:41,843 [main | o.a.c.u.SessionIdGeneratorBase] Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [784,201] milliseconds.

运行：

graphdb-free-8.7.2
Ubuntu 18.04.1 LTS
openjdk版本“ 10.0.2” 2018-07-17，OpenJDK运行时环境（内部版本10.0.2 + 13-Ubuntu-1ubuntu0.18.04.3），OpenJDK 64位服务器VM（内部版本10.0.2 + 13- Ubuntu-1ubuntu0.18.04.3，混合模式）

是否需要花费这么长时间？还是可以将其关闭？

谢谢！

Answer 1

您可以放心地忽略由使用Java 9运行数据库引起的第一条警告消息。新的模块封装系统会引发此警告。参见what is an illegal reflective access。

由于某些未知原因，Apache Tomcat 9.0.4代码库无法生成随机ID。就像Slow startup on Tomcat 7.0.57 because of SecureRandom中所建议的那样，您应该以{{1}}开始数据库，或者简单地将以下行添加到./graphdb -Djava.security.egd=file:/dev/./urandom：$GDB_HOME/bin/graphdb.in.sh。

启动时间很长-GraphDB 8.7.2

1 个答案: