[SPARK-27122][CORE][2.4] Jetty classes must not be return via getters in org.apache.spark.ui.WebUI #25793
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…rg.apache.spark.ui.WebUI When we run YarnSchedulerBackendSuite, the class path seems to be made from the classes folder(resource-managers/yarn/target/scala-2.12/classes) instead of jar (resource-managers/yarn/target/spark-yarn_2.12-3.0.0-SNAPSHOT.jar) . ui.getHandlers is in spark-core and its loaded from spark-core.jar which is shaded and hence refers to org.spark_project.jetty.servlet.ServletContextHandler Here in org.apache.spark.scheduler.cluster.YarnSchedulerBackend, as its not shaded, it expects org.eclipse.jetty.servlet.ServletContextHandler Refer discussion https://issues.apache.org/jira/browse/SPARK-27122?focusedCommentId=16792318&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16792318 Hence as a fix, org.apache.spark.ui.WebUI must only return a wrapper class instance or references so that Jetty classes can be avoided in getters which are accessed outside spark-core Existing UT can pass Closes #24088 from ajithme/shadebug. Authored-by: Ajith <ajith2489@gmail.com> Signed-off-by: Sean Owen <sean.owen@databricks.com>
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cc @ajithme , @srowen , @cloud-fan , @vanzin , @dbtsai |
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Test build #110613 has finished for PR 25793 at commit
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srowen
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Sep 15, 2019
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Test build #110622 has finished for PR 25793 at commit
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Thank you, @srowen . Merged to branch-2.4. |
dongjoon-hyun
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… in org.apache.spark.ui.WebUI ### What changes were proposed in this pull request? This is a backport of #24088 to avoid CCE. ### Why are the changes needed? When we run YarnSchedulerBackendSuite, the class path seems to be made from the classes folder(`resource-managers/yarn/target/scala-2.12/classes`) instead of jar (`resource-managers/yarn/target/spark-yarn_2.12-*-SNAPSHOT.jar`) . `ui.getHandlers` is in spark-core and its loaded from spark-core.jar which is shaded and hence refers to `org.spark_project.jetty.servlet.ServletContextHandler` Here in org.apache.spark.scheduler.cluster.YarnSchedulerBackend, as its not shaded, it expects org.eclipse.jetty.servlet.ServletContextHandler Refer discussion https://issues.apache.org/jira/browse/SPARK-27122?focusedCommentId=16792318&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16792318 Hence as a fix, org.apache.spark.ui.WebUI must only return a wrapper class instance or references so that Jetty classes can be avoided in getters which are accessed outside spark-core ### Does this PR introduce any user-facing change? No. ### How was this patch tested? Pass the Jenkins with the existing tests. Closes #25793 from dongjoon-hyun/SPARK-27122. Authored-by: Ajith <ajith2489@gmail.com> Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
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What changes were proposed in this pull request?
This is a backport of #24088 to avoid CCE.
Why are the changes needed?
When we run YarnSchedulerBackendSuite, the class path seems to be made from the classes folder(
resource-managers/yarn/target/scala-2.12/classes) instead of jar (resource-managers/yarn/target/spark-yarn_2.12-*-SNAPSHOT.jar) .ui.getHandlersis in spark-core and its loaded from spark-core.jar which is shaded and hence refers toorg.spark_project.jetty.servlet.ServletContextHandlerHere in org.apache.spark.scheduler.cluster.YarnSchedulerBackend, as its not shaded, it expects org.eclipse.jetty.servlet.ServletContextHandler
Refer discussion https://issues.apache.org/jira/browse/SPARK-27122?focusedCommentId=16792318&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16792318
Hence as a fix, org.apache.spark.ui.WebUI must only return a wrapper class instance or references so that Jetty classes can be avoided in getters which are accessed outside spark-core
Does this PR introduce any user-facing change?
No.
How was this patch tested?
Pass the Jenkins with the existing tests.