Could be related to CAM-447

the Job Query deadlocks:

1. 1. 1. Error querying database. Cause: com.microsoft.sqlserver.jdbc.SQLServerException: Transaction (Process ID 57) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
      2. The error may exist in org/camunda/bpm/engine/impl/mapping/entity/Job.xml
      3. The error may involve org.camunda.bpm.engine.impl.persistence.entity.JobEntity.selectJobByQueryCriteria-Inline
      4. The error occurred while setting parameters
      5. SQL: SELECT SUB.* FROM ( select RES.* , row_number() over (ORDER BY RES.ID_ asc) rnk FROM ( select distinct RES.* from ACT_RU_JOB RES LEFT OUTER JOIN ACT_RU_EXECUTION PI ON PI.ID_ = RES.PROCESS_INSTANCE_ID_ WHERE (RES.RETRIES_ > 0) and (RES.DUEDATE_ is null or RES.DUEDATE_ <= ?) and ( (RES.EXECUTION_ID_ is null) or (PI.SUSPENSION_STATE_ = 1) ) )RES ) SUB WHERE SUB.rnk >= ? AND SUB.rnk < ?
      6. Cause: com.microsoft.sqlserver.jdbc.SQLServerException: Transaction (Process ID 57) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.