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https://issues.apache.org/jira/browse/AMBARI-17946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Hurley updated AMBARI-17946:
-------------------------------------
Status: Patch Available (was: Open)
> Initial Upgrade Checks Can Fail With ConcurrentModificationException
> --------------------------------------------------------------------
>
> Key: AMBARI-17946
> URL: https://issues.apache.org/jira/browse/AMBARI-17946
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.2.0
> Reporter: Jonathan Hurley
> Assignee: Jonathan Hurley
> Priority: Critical
> Fix For: 2.4.0
>
> Attachments: AMBARI-17946.patch
>
>
> Intermittently, the pre-stack upgrade checks will fail with a
> {{ConcurrentModificationException}}:
> {code}
> WARNING: A HTTP GET method, public javax.ws.rs.core.Response
> org.apache.ambari.server.api.services.PreUpgradeCheckService.getPreUpgradeChecks(java.lang.String,javax.ws.rs.core.HttpHeaders,javax.ws.rs.core.UriInfo),
> should not consume any entity.
> 27 Jul 2016 04:21:27,035 ERROR [ambari-client-thread-35] CheckHelper:120 -
> Check HOSTS_MASTER_MAINTENANCE failed
> java.util.ConcurrentModificationException
> at
> java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:711)
> at
> java.util.LinkedHashMap$LinkedValueIterator.next(LinkedHashMap.java:739)
> at
> org.apache.ambari.server.checks.HostsMasterMaintenanceCheck.perform(HostsMasterMaintenanceCheck.java:83)
> at
> org.apache.ambari.server.state.CheckHelper.performChecks(CheckHelper.java:99)
> at
> org.apache.ambari.server.controller.internal.PreUpgradeCheckResourceProvider.getResources(PreUpgradeCheckResourceProvider.java:192)
> at
> org.apache.ambari.server.controller.internal.ClusterControllerImpl$ExtendedResourceProviderWrapper.queryForResources(ClusterControllerImpl.java:966)
> at
> org.apache.ambari.server.controller.internal.ClusterControllerImpl.getResources(ClusterControllerImpl.java:141)
> {code}
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