TeslaCN opened a new issue #1732:
URL: https://github.com/apache/shardingsphere-elasticjob/issues/1732
## Bug Report
### Steps to reproduce the behavior.
Try dumping a job exists in current namespace but not scheduled by the
process which runs the SnapshotService.
### Actual behavior
```
Exception in thread "Thread-0" java.lang.NullPointerException
at
org.apache.shardingsphere.elasticjob.lite.internal.snapshot.SnapshotService.dumpDirectly(SnapshotService.java:117)
at
org.apache.shardingsphere.elasticjob.lite.internal.snapshot.SnapshotService.process(SnapshotService.java:103)
at
org.apache.shardingsphere.elasticjob.lite.internal.snapshot.SnapshotService.lambda$openSocket$0(SnapshotService.java:79)
at java.base/java.lang.Thread.run(Thread.java:834)
```
After that, the SnapshotService will be unavailable.
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