[TAJO-916] SubQuery::computeStatFromTasks occasionally fail.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.9.0
• Component/s: QueryMaster
• Assignee: Hyoungjun Kim
• Reporter: JaeHwa Jung
• Created: 08/Jul/14 03:21
• Updated: 14/Jul/14 09:49
• Resolved: 14/Jul/14 09:37

Description

See the title.
SubQuery::computeStatFromTasks occasionally fails as follows:

ERROR querymaster.SubQuery (SubQuery.java:computeStatFromTasks(543)) - ==========================
org.apache.tajo.exception.InvalidOperationException
        at org.apache.tajo.datum.Int8Datum.compareTo(Int8Datum.java:201)
        at org.apache.tajo.catalog.statistics.StatisticsUtil.aggregateTableStat(StatisticsUtil.java:122)
        at org.apache.tajo.master.querymaster.SubQuery.computeStatFromTasks(SubQuery.java:540)
        at org.apache.tajo.master.querymaster.SubQuery.finalizeStats(SubQuery.java:582)
        at org.apache.tajo.master.querymaster.SubQuery.complete(SubQuery.java:370)
        at org.apache.tajo.master.querymaster.SubQuery$SubQueryCompleteTransition.transition(SubQuery.java:1166)
        at org.apache.tajo.master.querymaster.SubQuery$SubQueryCompleteTransition.transition(SubQuery.java:1138)
        at org.apache.hadoop.yarn.state.StateMachineFactory$MultipleInternalArc.doTransition(StateMachineFactory.java:385)
        at org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
        at org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:46)
        at org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:448)
        at org.apache.tajo.master.querymaster.SubQuery.handle(SubQuery.java:610)
        at org.apache.tajo.master.querymaster.QueryMasterTask$SubQueryEventDispatcher.handle(QueryMasterTask.java:253)
        at org.apache.tajo.master.querymaster.QueryMasterTask$SubQueryEventDispatcher.handle(QueryMasterTask.java:247)