為什么 UnixSystem().getUsername() 返回 null（Docker 中的 OpenJDK 17）

Question

以下代碼適用於 OSX

var hadoopInputFile  = org.apache.parquet.hadoop.util.HadoopInputFile.fromPath(parquetPath, new Configuration())

但它不在 Linux 上：

failure to login: javax.security.auth.login.LoginException: java.lang.NullPointerException: invalid null input: name
    at jdk.security.auth/com.sun.security.auth.UnixPrincipal.<init>(UnixPrincipal.java:67)
    at jdk.security.auth/com.sun.security.auth.module.UnixLoginModule.login(UnixLoginModule.java:134)
    at java.base/javax.security.auth.login.LoginContext.invoke(LoginContext.java:726)
    at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:665)
    at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:663)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:691)
    at java.base/javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:663)
    at java.base/javax.security.auth.login.LoginContext.login(LoginContext.java:574)
    at org.apache.hadoop.security.UserGroupInformation$HadoopLoginContext.login(UserGroupInformation.java:2065)
    at org.apache.hadoop.security.UserGroupInformation.doSubjectLogin(UserGroupInformation.java:1975)
    at org.apache.hadoop.security.UserGroupInformation.createLoginUser(UserGroupInformation.java:719)
    at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:669)
    at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:579)
    at org.apache.hadoop.fs.FileSystem$Cache$Key.<init>(FileSystem.java:3746)
    at org.apache.hadoop.fs.FileSystem$Cache$Key.<init>(FileSystem.java:3736)
    at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:3520)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:540)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:288)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:524)
    at org.apache.hadoop.fs.Path.getFileSystem(Path.java:365)
    at org.apache.parquet.hadoop.util.HadoopInputFile.fromPath(HadoopInputFile.java:38)
...

我發現new com.sun.security.auth.module.UnixSystem().getUsername()返回null但它不應該

任何想法如何解決它或變通？

更新程序
由於這是在 docker 容器內發生的
Dockerfile：

FROM maven:3.8.5-openjdk-17 AS tests
ENV WORKDIR="/application"
WORKDIR ${WORKDIR}
COPY . $WORKDIR/

運行命令：

      docker run
        --user 0:1001
        --volume $(command -v docker):/usr/bin/docker
        --volume /var/run/docker.sock:/var/run/docker.sock
        --volume $(pwd):/path/to/project/application
        app_tag bash -c
        "umask 002;
        mvn --settings ./.m2-settings.xml package"

更新 2
我發現 thad id給出了uid=1001 gid=1001 groups=1001
和whoami - whoami: cannot find name for user ID 1001

現在的解決方法是添加到 Dockerfile

RUN groupadd -g 1001 sysadmin
RUN useradd appadmin -u 1001 -g 1001 -m -s /bin/bash

Answer 1

添加到 Dockerfile 解決了這個問題

RUN groupadd -g 1001 sysadmin
RUN useradd appadmin -u 1001 -g 1001 -m -s /bin/bash