"there is no scanNode Backend" when loading data from hdfs(orc file) using broker load

[lmalds]

When I execute the statement of broker load, some JobId occured an error "ErrorMsg: type:LOAD_RUN_FAIL; msg:there is no scanNode Backend", but others is succeed. Details is attached.
What is reason of this error? And how to resolve?

[morningman]

Looks like some of Backends are crashed during load. You can do:

1. show backends and see the LastStartTime column, it means the recent start time of a BE. Or see if the Alive is false.
2. Find the recent started BE(or the BE with Alive false), see the content in be.out