java quartz 初始化异常

2016-04-19 02:11:11,421 (QuartzScheduler.java:2425)-An error occured instantiating job to be executed. job= 'maxbet_job_group.isn_job_group'
org.quartz.SchedulerException: Problem instantiating class 'com.thrash.job.DataJob' - [See nested exception: java.util.ConcurrentModificationException]
at org.quartz.core.JobRunShell.initialize(JobRunShell.java:134)
at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:375)
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at org.quartz.utils.DirtyFlagMap$DirtyFlagIterator.next(DirtyFlagMap.java:314)
at org.quartz.utils.DirtyFlagMap$DirtyFlagMapEntryIterator.next(DirtyFlagMap.java:375)
at org.quartz.utils.DirtyFlagMap$DirtyFlagMapEntryIterator.next(DirtyFlagMap.java:368)
at java.util.HashMap.putAll(Unknown Source)
at org.quartz.utils.DirtyFlagMap.putAll(DirtyFlagMap.java:184)
at org.quartz.simpl.PropertySettingJobFactory.newJob(PropertySettingJobFactory.java:72)
at org.quartz.core.JobRunShell.initialize(JobRunShell.java:127)
... 1 more