ExecutionContextService java.lang.NullPointerException

[gMan1990]

Please answer these questions before submitting your issue. Thanks!
开源不易，我们希望将精力放在完成新功能和解决有价值的问题上，为了让大家的配合更具有效率，请填写以下列出的全部问题

Which version of Elastic-Job do you using?（您使用的Elastic-Job版本为？）

elastic-job-lite-core-2.1.5.jar

Expected behavior （您预期的结果是）

maybe null safe?

Actual behavior （实际运行的结果是）

NullPointerException

Steps to reproduce the behavior （可重现问题的操作步骤）

I am not sure. 应该是网络访问不到的原因

Please provide the reproduce example codes (such as github link)，otherwise we will label the issue as Invalid and close it.（为了节省复现问题的时间，请务必提供可重现的代码，否则我们会将issue直接标记为invalid并关闭）

Code should based on https://github.com/elasticjob/elastic-job-example
（代码请基于 https://github.com/elasticjob/elastic-job-example）

---

NullPointerException 1 with {liteJobConfig-null, shardingItems-[0]}

1. https://github.com/elasticjob/elastic-job-lite/blob/9cc659f8e315e18efa9a3e57f0260fa50f616d17/elastic-job-lite/elastic-job-lite-core/src/main/java/com/dangdang/ddframe/job/lite/internal/sharding/ExecutionContextService.java#L63

        LiteJobConfiguration liteJobConfig = configService.load(false);
        removeRunningIfMonitorExecution(liteJobConfig.isMonitorExecution(), shardingItems);

    Job DEFAULT.XXX threw an unhandled Exception:
java.lang.NullPointerException: null
        at com.dangdang.ddframe.job.lite.internal.sharding.ExecutionContextService.getJobShardingContext(ExecutionContextService.java:63) ~[conf/:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJobFacade.getShardingContexts(LiteJobFacade.java:121) ~[elastic-job-lite-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.executor.AbstractElasticJobExecutor.execute(AbstractElasticJobExecutor.java:103) ~[elastic-job-common-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJob.execute(LiteJob.java:26) ~[elastic-job-lite-core-2.1.5.jar:?]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-2.2.1.jar:?]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573) [quartz-2.2.1.jar:?]
    Job (DEFAULT.XXX threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception.
        at org.quartz.core.JobRunShell.run(JobRunShell.java:213) [quartz-2.2.1.jar:?]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573) [quartz-2.2.1.jar:?]
Caused by: java.lang.NullPointerException
        at com.dangdang.ddframe.job.lite.internal.sharding.ExecutionContextService.getJobShardingContext(ExecutionContextService.java:63) ~[conf/:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJobFacade.getShardingContexts(LiteJobFacade.java:121) ~[elastic-job-lite-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.executor.AbstractElasticJobExecutor.execute(AbstractElasticJobExecutor.java:103) ~[elastic-job-common-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJob.execute(LiteJob.java:26) ~[elastic-job-lite-core-2.1.5.jar:?]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) ~[quartz-2.2.1.jar:?]
        ... 1 more

---

调用这句都可能LiteJobConfiguration liteJobConfig = configService.load(false);

2. https://github.com/elasticjob/elastic-job-lite/blob/9cc659f8e315e18efa9a3e57f0260fa50f616d17/elastic-job-lite/elastic-job-lite-core/src/main/java/com/dangdang/ddframe/job/lite/internal/sharding/ShardingService.java#L113

        LiteJobConfiguration liteJobConfig = configService.load(false);
        int shardingTotalCount = liteJobConfig.getTypeConfig().getCoreConfig().getShardingTotalCount();

    Job DEFAULT.XXX threw an unhandled Exception:
java.lang.NullPointerException: null
        at com.dangdang.ddframe.job.lite.internal.sharding.ShardingService.shardingIfNecessary(ShardingService.java:113) ~[elastic-job-lite-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJobFacade.getShardingContexts(LiteJobFacade.java:115) ~[elastic-job-lite-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.executor.AbstractElasticJobExecutor.execute(AbstractElasticJobExecutor.java:103) ~[elastic-job-common-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJob.execute(LiteJob.java:26) ~[elastic-job-lite-core-2.1.5.jar:?]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-2.2.1.jar:?]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573) [quartz-2.2.1.jar:?]

---

NullPointerException 2 with {liteJobConfig-{}, shardingItems-[], jobInstance-null}

https://github.com/elasticjob/elastic-job-lite/blob/9cc659f8e315e18efa9a3e57f0260fa50f616d17/elastic-job-lite/elastic-job-lite-core/src/main/java/com/dangdang/ddframe/job/lite/internal/sharding/ExecutionContextService.java#L75

    Job DEFAULT.XXX threw an unhandled Exception:
java.lang.NullPointerException: null
        at com.dangdang.ddframe.job.lite.internal.sharding.ExecutionContextService.buildTaskId(ExecutionContextService.java:75) ~[conf/:?]
        at com.dangdang.ddframe.job.lite.internal.sharding.ExecutionContextService.getJobShardingContext(ExecutionContextService.java:75) ~[conf/:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJobFacade.getShardingContexts(LiteJobFacade.java:121) ~[elastic-job-lite-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.executor.AbstractElasticJobExecutor.execute(AbstractElasticJobExecutor.java:103) ~[elastic-job-common-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJob.execute(LiteJob.java:26) ~[elastic-job-lite-core-2.1.5.jar:?]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-2.2.1.jar:?]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573) [quartz-2.2.1.jar:?]
    Job (DEFAULT.XXX threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception.
        at org.quartz.core.JobRunShell.run(JobRunShell.java:213) [quartz-2.2.1.jar:?]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573) [quartz-2.2.1.jar:?]
Caused by: java.lang.NullPointerException
        at com.dangdang.ddframe.job.lite.internal.sharding.ExecutionContextService.buildTaskId(ExecutionContextService.java:75) ~[conf/:?]
        at com.dangdang.ddframe.job.lite.internal.sharding.ExecutionContextService.getJobShardingContext(ExecutionContextService.java:75) ~[conf/:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJobFacade.getShardingContexts(LiteJobFacade.java:121) ~[elastic-job-lite-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.executor.AbstractElasticJobExecutor.execute(AbstractElasticJobExecutor.java:103) ~[elastic-job-common-core-2.1.5.jar:?]
        at com.dangdang.ddframe.job.lite.internal.schedule.LiteJob.execute(LiteJob.java:26) ~[elastic-job-lite-core-2.1.5.jar:?]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) ~[quartz-2.2.1.jar:?]
        ... 1 more

[compilerduck]

这是job的配置没读到，根据源码逻辑，如果是zk的ConnectionLossException，NoNodeException或是NodeExistsException，会忽略这些异常，并返回null，请看下日志是否报了这些信息（debug日志）

[terrymanu]

Closed because of no response anymore