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Posted to gitbox@hive.apache.org by "dengzhhu653 (via GitHub)" <gi...@apache.org> on 2023/03/28 03:21:46 UTC
[GitHub] [hive] dengzhhu653 opened a new pull request, #4164: HIVE-27179: HS2 WebUI throws NPE when JspFactory loaded from jetty-runner
dengzhhu653 opened a new pull request, #4164:
URL: https://github.com/apache/hive/pull/4164
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### What changes were proposed in this pull request?
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### Why are the changes needed?
When the jetty-runner jar defeats the javax.servlet.jsp-api jar for loading JspFactory, a NPE will be here when opening the HS2's home page.
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### Does this PR introduce _any_ user-facing change?
No
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### How was this patch tested?
Apply and compile the changes, place the jetty-runner jar ahead of CLASSPATH, restart the affected HS2, the NPE is gone.
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[GitHub] [hive] saihemanth-cloudera commented on a diff in pull request #4164: HIVE-27179: HS2 WebUI throws NPE when JspFactory loaded from jetty-runner
Posted by "saihemanth-cloudera (via GitHub)" <gi...@apache.org>.
saihemanth-cloudera commented on code in PR #4164:
URL: https://github.com/apache/hive/pull/4164#discussion_r1152709966
##########
service/src/java/org/apache/hive/service/server/HiveServer2.java:
##########
@@ -133,6 +133,8 @@
import com.google.common.util.concurrent.SettableFuture;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import javax.servlet.jsp.JspFactory;
Review Comment:
I see that you have removed javax.servlet dependency from root and service's pom.xml. I'm wondering where this dependency is coming from.
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[GitHub] [hive] dengzhhu653 commented on a diff in pull request #4164: HIVE-27179: HS2 WebUI throws NPE when JspFactory loaded from jetty-runner
Posted by "dengzhhu653 (via GitHub)" <gi...@apache.org>.
dengzhhu653 commented on code in PR #4164:
URL: https://github.com/apache/hive/pull/4164#discussion_r1152729260
##########
service/src/java/org/apache/hive/service/server/HiveServer2.java:
##########
@@ -133,6 +133,8 @@
import com.google.common.util.concurrent.SettableFuture;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import javax.servlet.jsp.JspFactory;
Review Comment:
Hi @saihemanth-cloudera, the jetty-runner jar contains the classes:
```
[Loaded javax.servlet.jsp.JspFactory from file:/opt/xxx/jetty-runner-9.4.48.v20220622.jar]
[Loaded javax.servlet.jsp.JspContext from file:/opt/xxx/jetty-runner-9.4.48.v20220622.jar]
[Loaded javax.servlet.jsp.PageContext from file:/opt/xxx/jetty-runner-9.4.48.v20220622.jar]
```
In fact this is where the class conflict happens.
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[GitHub] [hive] sonarcloud[bot] commented on pull request #4164: HIVE-27179: HS2 WebUI throws NPE when JspFactory loaded from jetty-runner
Posted by "sonarcloud[bot] (via GitHub)" <gi...@apache.org>.
sonarcloud[bot] commented on PR #4164:
URL: https://github.com/apache/hive/pull/4164#issuecomment-1487074291
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[GitHub] [hive] saihemanth-cloudera merged pull request #4164: HIVE-27179: HS2 WebUI throws NPE when JspFactory loaded from jetty-runner
Posted by "saihemanth-cloudera (via GitHub)" <gi...@apache.org>.
saihemanth-cloudera merged PR #4164:
URL: https://github.com/apache/hive/pull/4164
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[GitHub] [hive] sonarcloud[bot] commented on pull request #4164: HIVE-27179: HS2 WebUI throws NPE when JspFactory loaded from jetty-runner
Posted by "sonarcloud[bot] (via GitHub)" <gi...@apache.org>.
sonarcloud[bot] commented on PR #4164:
URL: https://github.com/apache/hive/pull/4164#issuecomment-1486190580
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[](https://sonarcloud.io/component_measures?id=apache_hive&pullRequest=4164&metric=duplicated_lines_density&view=list) No Duplication information
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