alexott opened a new pull request #3735: [ZEPPELIN-4757] Fix startup script errors/warnings URL: https://github.com/apache/zeppelin/pull/3735 ### What is this PR for? Errors & warnings are produced from the checks that are assuming that Zeppelin is running on Linux (`getent` is present) & in the container environment (`/etc/passwd` is writable). This patch fixes following: - added check for presence of the `getent` - added explicit check that script is running in the container by checking `/proc/self/cgroup` - also removed `MaxPermSize` JVM flag that isn't supported in Java 8 ### What type of PR is it? Bug Fix ### What is the Jira issue? * ZEPPELIN-4757 ### How should this be tested? * https://travis-ci.org/github/alexott/zeppelin/builds/675258720
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