[ovirt-users] JSON mapping exception

[Raul Laansoo]

Hi.

Is it somehow possible to manually recover engine from the following error, caused maybe by https://bugzilla.redhat.com/show_bug.cgi?id=1155084.

oVirt 3.5
2014-12-08 23:24:41,922 ERROR [org.ovirt.engine.core.utils.timer.SchedulerUtilQuartzImpl] (DefaultQuartzScheduler_Worker-40) Failed to invoke scheduled method invokeCallbackMethods: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor100.invoke(Unknown Source) [:1.7.0_65]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_65]
        at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_65]
        at org.ovirt.engine.core.utils.timer.JobWrapper.execute(JobWrapper.java:60) [scheduler.jar:]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:213) [quartz.jar:]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:557) [quartz.jar:]
Caused by: org.apache.commons.lang.SerializationException: org.codehaus.jackson.map.JsonMappingException: Unexpected token (END_ARRAY), expected VALUE_STRING: need JSON String that contains type id (for subtype of java.util.Collection)
 at [Source: java.io.StringReader at 6a4d8b78; line: 22, column: 22] (through reference chain: org.ovirt.engine.core.common.action.AddVmFromSnapshotParameters["parametersCurrentUser"]->org.ovirt.engine.core.common.businessentities.aaa.DbUser["groupNames"])
        at org.ovirt.engine.core.utils.serialization.json.JsonObjectDeserializer.readJsonString(JsonObjectDeserializer.java:91) [utils.jar:]
        at org.ovirt.engine.core.utils.serialization.json.JsonObjectDeserializer.deserialize(JsonObjectDeserializer.java:60) [utils.jar:]
        at org.ovirt.engine.core.dao.CommandEntityDaoDbFacadeImpl.deserializeParameters(CommandEntityDaoDbFacadeImpl.java:97) [dal.jar:]
        at org.ovirt.engine.core.dao.CommandEntityDaoDbFacadeImpl.access$000(CommandEntityDaoDbFacadeImpl.java:21) [dal.jar:]
        at org.ovirt.engine.core.dao.CommandEntityDaoDbFacadeImpl$1.mapRow(CommandEntityDaoDbFacadeImpl.java:34) [dal.jar:]
        at org.ovirt.engine.core.dao.CommandEntityDaoDbFacadeImpl$1.mapRow(CommandEntityDaoDbFacadeImpl.java:23) [dal.jar:]
        at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:92) [spring-jdbc.jar:3.1.1.RELEASE]
        at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:1) [spring-jdbc.jar:3.1.1.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:649) [spring-jdbc.jar:3.1.1.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:587) [spring-jdbc.jar:3.1.1.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:637) [spring-jdbc.jar:3.1.1.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:666) [spring-jdbc.jar:3.1.1.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:706) [spring-jdbc.jar:3.1.1.RELEASE]
        at org.ovirt.engine.core.dal.dbbroker.PostgresDbEngineDialect$PostgresSimpleJdbcCall.executeCallInternal(PostgresDbEngineDialect.java:154) [dal.jar:]
        at org.ovirt.engine.core.dal.dbbroker.PostgresDbEngineDialect$PostgresSimpleJdbcCall.doExecute(PostgresDbEngineDialect.java:120) [dal.jar:]
        at org.springframework.jdbc.core.simple.SimpleJdbcCall.execute(SimpleJdbcCall.java:181) [spring-jdbc.jar:3.1.1.RELEASE]
        at org.ovirt.engine.core.dal.dbbroker.SimpleJdbcCallsHandler.executeImpl(SimpleJdbcCallsHandler.java:141) [dal.jar:]
        at org.ovirt.engine.core.dal.dbbroker.SimpleJdbcCallsHandler.executeReadList(SimpleJdbcCallsHandler.java:103) [dal.jar:]
        at org.ovirt.engine.core.dao.DefaultReadDaoDbFacade.getAll(DefaultReadDaoDbFacade.java:77) [dal.jar:]
        at org.ovirt.engine.core.bll.tasks.CommandsCacheImpl.initializeCache(CommandsCacheImpl.java:30) [bll.jar:]
        at org.ovirt.engine.core.bll.tasks.CommandsCacheImpl.keySet(CommandsCacheImpl.java:41) [bll.jar:]
        at org.ovirt.engine.core.bll.tasks.CommandCoordinatorImpl.getCommandsWithCallBackEnabled(CommandCoordinatorImpl.java:130) [bll.jar:]
        at org.ovirt.engine.core.bll.tasks.CommandExecutor.initCommandExecutor(CommandExecutor.java:119) [bll.jar:]
        at org.ovirt.engine.core.bll.tasks.CommandExecutor.invokeCallbackMethods(CommandExecutor.java:57) [bll.jar:]
        ... 6 more

Thank you.
---
Raul