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https://issues.apache.org/jira/browse/AMBARI-23129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated AMBARI-23129:
------------------------------------
Labels: pull-request-available (was: )
> Multiple issues while executing Ambari server upgrade to Ambari 2.7.0
> ---------------------------------------------------------------------
>
> Key: AMBARI-23129
> URL: https://issues.apache.org/jira/browse/AMBARI-23129
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.7.0
> Reporter: Robert Levas
> Assignee: Robert Levas
> Priority: Critical
> Labels: pull-request-available
> Fix For: 2.7.0
>
>
> *1. An NPE is thrown will initializing the Ambari server upgrade catalog*
> {code:title=com.google.inject.persist.jpa.JpaPersistService#begin}
> public void begin() {
> Preconditions.checkState(null == this.entityManager.get(), "Work
> already begun on this thread. Looks like you have called UnitOfWork.begin()
> twice without a balancing call to end() in between.");
> this.entityManager.set(this.emFactory.createEntityManager());
> }
> {code}
> {{this.emFactory}} is {{null}}.
> *Cause*
> {{com.google.inject.persist.jpa.JpaPersistService#start()}} was not called
> before {{com.google.inject.persist.jpa.JpaPersistService#begin}} to do order
> of operations in
> {{org.apache.ambari.server.upgrade.SchemaUpgradeHelper#main}}.
> *Solution*
> Ensure {{com.google.inject.persist.jpa.JpaPersistService#start()}} is being
> called before {{com.google.inject.persist.jpa.JpaPersistService#begin}} in
> {{org.apache.ambari.server.upgrade.SchemaUpgradeHelper#main}}.
> -----
> *2. Missing repo_os, repo_definition, and repo_tags tables*
> The {{repo_os}}, {{repo_definition}}, and {{repo_tags}} tables were never
> added to the UpgradeCatalog implementation. The migration logic is also
> needed.
> *Solution*
> Add the missing tables and logic while executing
> {{org.apache.ambari.server.upgrade.UpgradeCatalog270#executeDDLUpdates}}.
> -----
> *3. Entity classes are initialized before the schema of the underlying
> database is updated*
> *Solution*
> Notify relevant classes that the persistence infrastructure is ready after
> DDL updates have been applied.
> The {{org.apache.ambari.server.events.publishers.AmbariEventPublisher}} is to
> be used for issuing a
> {{org.apache.ambari.server.events.JpaInitializedEvent}}.
> -----
> *4. JVM does not exit after performing upgrade*
> After executing {{ambari-server upgrade}}, the JVM process hangs and does not
> exit. According to the logs, no errors have occurred.
> *Cause*
> The cause of this is several non-daemon threads not being shutdown by Ambari
> code.
> *Solution*
> Change relevant non-daemon threads to daemon threads and ensure any thread
> polls are not forcing one thread to be alive at all times.
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