Github user xuchuanyin commented on the issue:
https://github.com/apache/carbondata/pull/2594
@ravipesala
Fixed.
The root cause is that MV is actually 'deferred rebuild', but we didn't specify it while we create the datamap.
To make compliance, we will enable 'deferred rebuild' for MV datamap no matter whether the flag is enabled by user or not.
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