question: not thread-safe . concode_field_sep Set<WriteEntity> outputs concode_elem_sep Map<Path,List<FileSinkDesc>> linkedFileSinks concode_elem_sep Set<BaseWork> workWithUnionOperators concode_elem_sep Set<ReadEntity> inputs concode_elem_sep TezTask currentTask concode_elem_sep Map<Operator<?>,BaseWork> rootToWorkMap concode_elem_sep HiveConf conf concode_elem_sep Map<BaseWork,List<ReduceSinkOperator>> linkWorkWithReduceSinkMap concode_elem_sep Map<Operator<?>,MergeJoinWork> opMergeJoinWorkMap concode_elem_sep Set<AppMasterEventOperator> eventOperatorSet concode_elem_sep Set<MapJoinOperator> currentMapJoinOperators concode_elem_sep Set<ReduceSinkOperator> connectedReduceSinks concode_elem_sep Set<ReduceSinkOperator> clonedReduceSinks concode_elem_sep Operator<? extends OperatorDesc> parentOfRoot concode_elem_sep Map<Operator<?>,List<Operator<?>>> linkChildOpWithDummyOp concode_elem_sep Map<Operator<?>,BaseWork> unionWorkMap concode_elem_sep BaseWork preceedingWork concode_elem_sep Map<Operator<?>,BaseWork> leafOperatorToFollowingWork concode_elem_sep List<Task<? extends Serializable>> rootTasks concode_elem_sep ParseContext parseContext concode_elem_sep DependencyCollectionTask dependencyTask concode_elem_sep Operator<? extends OperatorDesc> currentRootOperator concode_elem_sep Map<Operator<?>,List<BaseWork>> childToWorkMap concode_elem_sep Map<MapJoinOperator,List<Operator<?>>> mapJoinParentMap concode_elem_sep List<Task<MoveWork>> moveTask concode_elem_sep Map<Operator<?>,UnionWork> rootUnionWorkMap concode_elem_sep Map<TableScanOperator,List<AppMasterEventOperator>> tsToEventMap concode_elem_sep Set<AppMasterEventOperator> abandonedEventOperatorSet concode_elem_sep Set<FileSinkOperator> fileSinkSet concode_elem_sep Map<MapJoinOperator,List<BaseWork>> mapJoinWorkMap concode_elem_sep Map<MapJoinOperator,Set<ReduceSinkOperator>> mapJoinToUnprocessedSmallTableReduceSinks concode_elem_sep int sequenceNumber concode_elem_sep Map<Operator<?>,MapJoinOperator> smallTableParentToMapJoinMap concode_elem_sep List<UnionOperator> currentUnionOperators concode_elem_sep CommonMergeJoinOperator currentMergeJoinOperator concode_elem_sep Map<Operator<?>,Map<BaseWork,TezEdgeProperty>> linkOpWithWorkMap concode_field_sep placeholderType placeHolder
target: int function ( ) { return ++ sequenceNumber ; }