[jira] [Resolved] (HIVE-27179) HS2 WebUI throws NPE when JspFactory loaded from jetty-runner

["Zhihua Deng (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-27179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhihua Deng resolved HIVE-27179.
--------------------------------
    Fix Version/s: 4.0.0
       Resolution: Fixed

Thank you [~hemanth619] for the review!

> HS2 WebUI throws NPE when JspFactory loaded from jetty-runner
> -------------------------------------------------------------
>
>                 Key: HIVE-27179
>                 URL: https://issues.apache.org/jira/browse/HIVE-27179
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2
>            Reporter: Zhihua Deng
>            Assignee: Zhihua Deng
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> In HIVE-17088{*},{*} we resolved a NPE thrown from HS2 WebUI by introducing 
> javax.servlet.jsp-api. It works as expected when the javax.servlet.jsp-api jar prevails jetty-runner jar, but things can be different in some environments, it still throws NPE when opening the HS2 web:
> {noformat}
> java.lang.NullPointerException 
> at org.apache.hive.generated.hiveserver2.hiveserver2_jsp._jspService(hiveserver2_jsp.java:286) 
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:71) 
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
> at org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1443) 
> at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:791) 
> at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1626)
> ...{noformat}
> The jetty-runner JspFactory.getDefaultFactory() just returns null.



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