[ https://issues.jboss.org/browse/TEIID-2408?page=com.atlassian.jira.plugin... ] Jack Ma reopened TEIID-2408: ---------------------------- Hi Ramesh: I am trying to verify this issue at 8.3 teiid final release. When I try to retrieve the engineStatistics, I got following exception: Caused by: java.lang.IllegalArgumentException at org.jboss.dmr.ModelValue.getChild(ModelValue.java:108) at org.jboss.dmr.PropertyModelValue.getChild(PropertyModelValue.java:116) at org.jboss.dmr.ModelNode.get(ModelNode.java:798) at org.teiid.adminapi.impl.VDBMetadataMapper$EngineStatisticsMetadataMapper.unwrap(VDBMetadataMapper.java:1014) at org.teiid.adminapi.impl.VDBMetadataMapper$EngineStatisticsMetadataMapper.unwrap(VDBMetadataMapper.java:973) at org.teiid.adminapi.AdminFactory$AdminImpl.getList(AdminFactory.java:1389) at org.teiid.adminapi.AdminFactory$AdminImpl.getDomainAwareList(AdminFactory.java:1376) at org.teiid.adminapi.AdminFactory$AdminImpl.getEngineStats(AdminFactory.java:784) By debugging a little bit of teiid source code: at AdminFactory$AdminImpl.getList(ModelNode, MetadataMapper<T>), we try to from operationResult to create a list of node for each field of results. then to unwrap the each node individually. soat VDBMetadataMapper$EngineStatisticsMetadataMapper.unwrap(ModelNode), input ModelNode parameter only contains one field of engine statistic results each time, for example, it only has a node contains "Session-count", but teiid is trying to get all other engine statistics which does not exist in this individual node. So exception occurred. Therefore I re-opened this issue. Please confirm it. Thanks Jack -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira