Java程序使用Alpine Linux报错java.lang.NoClassDefFoundError: Could not initialize class org.xerial.snappy.Snappy解决
报错内容
Caused by: java.lang.UnsatisfiedLinkError: /tmp/snappy-1.1.7-4a4b576a-c34c-481e-b6ac-9b4abacb112e-libsnappyjava.so:
Error loading shared library ld-linux-x86-64.so.2:
No such file or directory (needed by /tmp/snappy-1.1.7-4a4b576a-c34c-481e-b6ac-9b4abacb112e-libsnappyjava.so)
nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.xerial.snappy.Snappy
org.springframework.web.util.NestedServletException: Handler dispatch failed;
nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.xerial.snappy.Snappy
描述
由于项目中使用了org.xerial.snappy.Snappy
这个类,在正常的centos系统环境下,没有问题;在微服务容器(openjdk:8-jdk-alpine)测试的时候发现有一个功能不正常,爬出了以上重要的日志
发现org.xerial.snappy.Snappy
这个类无法初始化,日志往上查发现了真实的情况,即java.lang.UnsatisfiedLinkError: /tmp/snappy-1.1.7-4a4b576a-c34c-481e-b6ac-9b4abacb112e-libsnappyjava.so: Error loading shared library ld-linux-x86-64.so.2: No such file or directory (needed by /tmp/snappy-1.1.7-4a4b576a-c34c-481e-b6ac-9b4abacb112e-libsnappyjava.so
通过这个信息可以定位出是未找到ld-linux-x86-64.so库
解决方式
由于openjdk:8-jdk-alpine容器使用的是Alpine Linux,经多方查找,可以使用以下方式解决
创建软连接,如果/lib目录下有linux-x86-64.so.2可以不用执行后边的操作,没有则需要继续安装
ln -s /lib /lib64
并安装多个库
apk add --no-cache bash tini libc6-compat linux-pam krb5 krb5-libs
bash不是必须的,只是用起来方便
最后添加到Dockerfile中如下
参考
https://issues.apache.org/jira/browse/SPARK-26995
https://github.com/apache/spark/pull/23898
https://github.com/rluta/spark/commit/f3f3b6353874bd19aa5c720a4a55ccebf29cafb1